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KOMATSU PW148-11 SHOP MANUAL VENBM68001 – PDF DOWNLOAD
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Description
KOMATSU PW148-11 SHOP MANUAL VENBM68001 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU PW148-11 SHOP MANUAL VENBM68001 – PDF DOWNLOAD
Language : English
Pages : 818
Downloadable : Yes
File Type : PDF
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TABLE OF CONTENTS:
KOMATSU PW148-11 SHOP MANUAL VENBM68001 – PDF DOWNLOAD
VENBM68001 PW148-11........................................................................................................................... 1 FOREWORD...................................................................................................................................... 5 Safety.................................................................................................................................... 5 Important safety notice............................................................................................................... 5 General precautions................................................................................................................... 5 Preparations for work................................................................................................................. 5 Precautions during work............................................................................................................... 6 General................................................................................................................................... 7 General............................................................................................................................... 7 Structure and function................................................................................................................ 7 Testing, adjusting and troubleshooting................................................................................................ 7 Disassembly and assembly.............................................................................................................. 7 Maintenance standard.................................................................................................................. 7 How to read the shop manual............................................................................................................... 8 Volumes............................................................................................................................... 8 Distribution and updating......................................................................................................... 8 Filing method......................................................................................................................... 8 Revised edition mark.................................................................................................................. 8 Revisions............................................................................................................................. 8 Symbols............................................................................................................................... 8 Hoisting instructions..................................................................................................................... 9 Hoisting.............................................................................................................................. 9 Wire Ropes........................................................................................................................ 9 Coating materials......................................................................................................................... 10 Standard tightening torque................................................................................................................ 12 Standard tightening torque of bolts and nuts.......................................................................................... 12 Tightening torque of hose nuts........................................................................................................ 13 Tightening torque of split flange bolts............................................................................................... 13 Tightening torques for hoses (taper seal type and face seal type)..................................................................... 13 Tightening torque for 107 engine series (bolts and nuts).............................................................................. 14 Tightening torque for 107 engine series (eye joints).................................................................................. 14 Tightening torque for 107 engine series (tapered screws).............................................................................. 14 Electric wire code........................................................................................................................ 15 Classification by thickness........................................................................................................... 15 Classification by color and code...................................................................................................... 15 Conversion tables......................................................................................................................... 16 Method of using the conversion table.................................................................................................. 16 Units..................................................................................................................................... 22 GENERAL....................................................................................................................................... 23 Specification dimension drawings.......................................................................................................... 24 Dimensions............................................................................................................................ 24 Working ranges............................................................................................................................ 26 Working range: 1-piece boom........................................................................................................... 26 Working range: 2-piece boom........................................................................................................... 27 Weight table.............................................................................................................................. 31 1-piece boom.......................................................................................................................... 32 2-piece boom.......................................................................................................................... 33 Fuel, coolant and lubricants.............................................................................................................. 34 STRUCTURE AND FUNCTION........................................................................................................................ 35 Abbreviation list......................................................................................................................... 38 List of abbreviations used in the text................................................................................................ 38 List of abbreviations used in the circuit diagrams.................................................................................... 42 UREA SCR system........................................................................................................................... 43 Layout drawing of UREA SCR system..................................................................................................... 43 Detailed drawing of SCR assembly.................................................................................................. 46 Detailed drawing of AdBlue/DEF tank............................................................................................... 47 UREA SCR system diagram............................................................................................................... 48 Function of UREA SCR system....................................................................................................... 49 Function of AdBlue/DEF system..................................................................................................... 50 AdBlue/DEF injection function..................................................................................................... 50 AdBlue/DEF purge function......................................................................................................... 51 Function of AdBlue/DEF thawing and preventing from freezing....................................................................... 51 Inducement strategy............................................................................................................... 52 Inducement strategy when the AdBlue/DEF level in the tank becomes low (for north America)......................................... 53 Inducement strategy when abnormality is found in the UREA SCR system devices (for north America).................................. 54 Inducement strategy when abnormality is found in the KDOC system by the IREA SCR system (for north America)....................... 56 Function of temporary restoration from inducement (for north America)............................................................. 58 Inducement strategy for abnormality recurrence within 40 hours (for north America)................................................ 59 Inducement strategy when the AdBlue/DEF level in the tank becomes low (for European Union)........................................ 60 Inducement strategy when abnormality is found in the AdBlue/DEF quality or in the UREA SCR system devices (for European Union).... 62 Inducement strategy when abnormality is found in the KDOC system by the IREA SCR system (for Europan Union)....................... 64 Inducement strategy when abnormality is found in the EGR system by the IREA SCR system devices (foR European Union)............... 66 Function of temporary restoration from inducement (for European Union)............................................................ 67 Inducement strategy for abnormality recurrence within 40 hours (for European Union................................................ 68 Component parts of UREA SCR system.................................................................................................... 69 AdBlue/DEF MIXING TUBE............................................................................................................ 69 SCR assembly.......................................................................................................................... 70 Structure of UREA SCR assembly.................................................................................................... 70 AdBlue/DEF tank....................................................................................................................... 72 Structure of AdBlue/DEF tank...................................................................................................... 72 AdBlue/DEF tank sensor............................................................................................................ 73 Function of AdBlue tank sensor.................................................................................................... 73 AdBlue/DEF pump................................................................................................................... 74 AdBlue/DEF injector............................................................................................................... 75 AdBlue/DEF hose................................................................................................................... 76 AdBlue/DEF tank heating valve..................................................................................................... 77 BOOT-UP system............................................................................................................................ 78 Layout drawing of BOOT-UP system...................................................................................................... 78 System operating lamp system.......................................................................................................... 79 System operating lamp system diagram.............................................................................................. 79 Function of system operating lamp system.......................................................................................... 79 Battery disconnect switch............................................................................................................. 80 Function of battery disconnect switch............................................................................................. 80 Engine system............................................................................................................................. 82 Layout drawing of engine system....................................................................................................... 82 Function of engine system......................................................................................................... 83 Engine control system................................................................................................................. 83 Engine control system diagram..................................................................................................... 83 Function of engine control system................................................................................................. 84 Auto-deceleration system.............................................................................................................. 87 Auto-deceleration system diagram.................................................................................................. 87 Engine automatic warm-up system....................................................................................................... 89 Engine automatic warm-up system diagram........................................................................................... 89 Function of engine automatic warm-up system....................................................................................... 90 Overheat prevention system............................................................................................................ 91 Overheat prevention system diagram................................................................................................ 91 Function of overheat prevention system............................................................................................ 92 Turbocharger protection system........................................................................................................ 93 Turbocharger protection system diagram............................................................................................ 93 Function of turbocharger protection system........................................................................................ 94 Automatic idle stop system............................................................................................................ 95 Automatic idle stop system diagram................................................................................................ 95 Function of automatic idle stop system............................................................................................ 95 Abrupt engine stop is detected.................................................................................................... 98 Component parts of engine system...................................................................................................... 99 Structure of VGT.................................................................................................................. 99 EGR system............................................................................................................................102 Layout drawing of EGR system......................................................................................................102 Function of EGR system............................................................................................................102 Circuit diagram of EGR system.....................................................................................................103 Operation of EGR system...........................................................................................................103 EGR valve.............................................................................................................................104 Structure of EGR valve............................................................................................................104 General view and sectional view...................................................................................................104 Operation of EGR valve............................................................................................................105 EGR cooler............................................................................................................................106 Structure of EGR cooler...........................................................................................................106 General view and sectional view...................................................................................................106 Detailed drawing of flat tube.....................................................................................................107 Operation of EGR cooler...........................................................................................................107 KCCV system...........................................................................................................................108 Layout drawing of KCCV system.....................................................................................................108 KCCV ventilator.......................................................................................................................110 Structure of KCCV ventilator......................................................................................................110 Function of KCCV ventilator.......................................................................................................110 Operation of KCCV ventilator......................................................................................................111 CDR valve.........................................................................................................................111 KDOC..................................................................................................................................112 Structure of KDOC.................................................................................................................112 Function of KDOC..................................................................................................................113 Types of regeneration functions...................................................................................................113 Cooling system............................................................................................................................116 Layout drawing of cooling system......................................................................................................116 Specifications of cooling system......................................................................................................117 Fan speed control system of fan clutch................................................................................................118 Engine output control system of fan clutch............................................................................................120 Engine output control system diagram of fan clutch................................................................................120 Function of engine output control system of fan clutch............................................................................121 Component parts of cooling system.....................................................................................................122 Fan clutch........................................................................................................................122 Power train...............................................................................................................................124 Swing circle..........................................................................................................................126 Specifications....................................................................................................................126 Swing machinery & motor...................................................................................................................127 Specification.........................................................................................................................128 Operation of swing lock...............................................................................................................129 Relief valve portion..................................................................................................................130 Operation.........................................................................................................................130 Undercarriage.............................................................................................................................132 Transmission..............................................................................................................................134 Specifications........................................................................................................................135 Function..............................................................................................................................137 TRAILER...................................................................................................................................138 AUTOMATIC TRAILER COUPLING FOR BLADE..................................................................................................138 Functional check..................................................................................................................138 Possible faults in the coupling...................................................................................................139 Wear limits.......................................................................................................................140 AUTOMATIC TRAILER COUPLING FOR OUTRIGGER..............................................................................................142 Functional check..................................................................................................................142 HEIGHT ADJUSTMENT COMPONENTS......................................................................................................143 Functional check..................................................................................................................143 Possible faults in the coupling...................................................................................................144 Wear limits.......................................................................................................................146 INSPECTION............................................................................................................................148 2nd Auxiliary circuit in the undercarriage................................................................................................150 Function..............................................................................................................................150 Specifications........................................................................................................................151 PW148-11: Schematic of auxiliary circuit..............................................................................................151 Hydraulic quick coupler...................................................................................................................152 Schematic.............................................................................................................................152 Operation.............................................................................................................................153 Hydraulic quick coupler solenoid valve................................................................................................153 Specification.........................................................................................................................154 Quick coupler error logic.............................................................................................................154 Full hydraulic quick coupler..............................................................................................................156 Travel motor..............................................................................................................................158 Function..............................................................................................................................159 Operation of travel motor.............................................................................................................160 Clutch control circuit....................................................................................................................162 Function..............................................................................................................................163 Axle......................................................................................................................................164 Outline...............................................................................................................................164 Suspension lock cylinder..................................................................................................................167 Specifications........................................................................................................................167 Structure and function................................................................................................................167 Circuit...............................................................................................................................168 Axle oscillation......................................................................................................................168 Braking system............................................................................................................................169 Structure and function................................................................................................................171 Gear pump.................................................................................................................................172 Specifications........................................................................................................................172 Function..............................................................................................................................172 Priority valve............................................................................................................................174 Specification.........................................................................................................................174 Function..............................................................................................................................174 Power brake valve.........................................................................................................................176 Specifications........................................................................................................................177 Function..............................................................................................................................177 Accumulator for brake valve...............................................................................................................178 Specifications........................................................................................................................178 Structure and function................................................................................................................178 Steering system...........................................................................................................................179 Structure and function................................................................................................................179 Joystick steering system..................................................................................................................180 Structure and function................................................................................................................181 Steering column JSS...................................................................................................................182 Specifications........................................................................................................................183 Steering column STD.......................................................................................................................185 Steering column JSS.......................................................................................................................186 Orbitrol valve STD........................................................................................................................187 Specifications........................................................................................................................187 Structure and function................................................................................................................187 Orbitrol valve JSS........................................................................................................................188 Specifications........................................................................................................................188 Structure and function................................................................................................................188 Hydraulic equipment layout drawings.......................................................................................................190 Hydraulic circuit diagram.................................................................................................................192 Hydraulic tank............................................................................................................................193 Specifications........................................................................................................................193 Hydraulic pump............................................................................................................................194 Function..............................................................................................................................196 Structure.............................................................................................................................196 Operation.............................................................................................................................197 LS valve..............................................................................................................................199 PC valve..............................................................................................................................200 Function..........................................................................................................................201 Operation.........................................................................................................................202 1. LS valve.......................................................................................................................202 2. PC valve.......................................................................................................................206 LS(PC)-EPC valve......................................................................................................................213 Function..........................................................................................................................214 Operation.........................................................................................................................214 Pilot pressure control (PPC) system.......................................................................................................216 Function..............................................................................................................................217 Operation.............................................................................................................................217 Control main valve........................................................................................................................218 Outline...............................................................................................................................218 CLSS......................................................................................................................................233 Outline of CLSS.......................................................................................................................233 Features..........................................................................................................................233 Structure.........................................................................................................................233 Basic Principle.......................................................................................................................234 Operation for each function and valve.................................................................................................236 Hydraulic circuit diagram and name of valves......................................................................................236 1. Unload valve.......................................................................................................................238 Function..........................................................................................................................238 Operation.........................................................................................................................238 Operation.........................................................................................................................239 Operation.........................................................................................................................240 2. Introduction of LS pressure........................................................................................................241 Work equipment valve..............................................................................................................241 Function..........................................................................................................................241 Operation.........................................................................................................................241 3. LS bypass plug.....................................................................................................................242 Outline...........................................................................................................................242 Operation.........................................................................................................................242 4. Pressure compensation valve........................................................................................................243 Function..........................................................................................................................243 Operation.........................................................................................................................244 5. Area ratio of pressure compensation valve..........................................................................................245 Function..........................................................................................................................245 6. Boom regeneration circuit..........................................................................................................246 Function..........................................................................................................................246 Operation.........................................................................................................................246 Function..........................................................................................................................247 Operation.........................................................................................................................247 7. Arm regeneration circuit...........................................................................................................248 Function..........................................................................................................................248 Operation.........................................................................................................................248 Function..........................................................................................................................249 Operation.........................................................................................................................249 8. Swing bleeding valve...............................................................................................................250 Function..........................................................................................................................250 Operation (In fine control operation).............................................................................................251 9. LS select valve....................................................................................................................252 Function..........................................................................................................................252 Operation.........................................................................................................................252 Centre swivel joint.......................................................................................................................253 Travel PPC pedal..........................................................................................................................254 Work equipment – Swing PPC valve..........................................................................................................256 Operation.............................................................................................................................258 Solenoid valve block with integrated ATT - EPC............................................................................................260 ON / OFF Solenoid valves (3 way valve)................................................................................................262 Operation.........................................................................................................................262 ON / OFF Solenoid valves (4 way valve)............................................................................................264 Operation.........................................................................................................................264 Hi/ Lo Solenoid valve (4 way valve)...............................................................................................266 Attachment PPC valve..................................................................................................................268 Function..........................................................................................................................269 Operation.........................................................................................................................269 Undercarriage solenoid valve block....................................................................................................271 Boom/Outrigger schematic..............................................................................................................272 Undercarriage attachment schematic....................................................................................................273 Proportional attachment control.......................................................................................................274 Proportional attachment schematic.....................................................................................................275 Bucket to 2ATT............................................................................................................................276 Function..............................................................................................................................276 Bucket to 2 ATT valve.............................................................................................................277 Boom safety valve.........................................................................................................................278 Operation.............................................................................................................................279 Boom floating.............................................................................................................................280 PPC pressure reduction/ Boom floating logic...........................................................................................280 Hydraulic cylinder........................................................................................................................286 Boom cylinder.........................................................................................................................286 Arm cylinder..........................................................................................................................286 Bucket cylinder.......................................................................................................................286 Adjust cylinder.......................................................................................................................287 Outrigger cylinder....................................................................................................................288 Function..........................................................................................................................289 Dozer cylinder........................................................................................................................290 Function..........................................................................................................................291 Work equipment............................................................................................................................292 Work equipment........................................................................................................................293 1. Dimension of arm...................................................................................................................294 2. Dimension of bucket................................................................................................................296 Tool control..............................................................................................................................298 Tool control schematic (detail from hydraulic diagram)................................................................................299 ECSS......................................................................................................................................300 ECSS Logic............................................................................................................................300 ESS Hydraulic Schematic...............................................................................................................302 ECSS Accumulator position.............................................................................................................303 ECSS Valve............................................................................................................................304 ECSS Hydraulic diagram................................................................................................................305 Breaker return valve......................................................................................................................306 Function..............................................................................................................................306 Air conditioner...........................................................................................................................310 Air conditioner component.............................................................................................................310 Specifications of air conditioner.....................................................................................................313 Electrical wiring diagram.................................................................................................................314 Electrical system.........................................................................................................................315 Engine control........................................................................................................................315 1. Operation of System............................................................................................................315 2. Component......................................................................................................................316 Engine controller.........................................................................................................................317 Structure of engine controller........................................................................................................317 General view......................................................................................................................317 Input and output signals of engine controller.....................................................................................317 Machine control system diagram............................................................................................................326 1. Engine and pump control function...................................................................................................327 Function..............................................................................................................................328 Function..............................................................................................................................332 Function..............................................................................................................................334 Function..............................................................................................................................336 Operation.............................................................................................................................337 Function..............................................................................................................................338 Function..............................................................................................................................342 Function..............................................................................................................................344 Function..............................................................................................................................347 Specifications........................................................................................................................348 Function..............................................................................................................................348 Function..............................................................................................................................349 Operation.............................................................................................................................349 Machine monitor system....................................................................................................................353 Function of machine monitor...........................................................................................................355 Monitor display.......................................................................................................................360 Monitor items and display.............................................................................................................362 Caution monitor.......................................................................................................................364 Pilot monitor.........................................................................................................................368 Monitor switches......................................................................................................................372 Declaration of switch function on keypad..........................................................................................373 Guidance icon and function switch.................................................................................................375 Operator mode function............................................................................................................378 Service mode function of machine monitor..........................................................................................380 KOMTRAX system............................................................................................................................382 KOMTRAX terminal......................................................................................................................383 Structure of KOMTRAX terminal.....................................................................................................383 Function of KOMTRAX terminal......................................................................................................383 KomVision system..........................................................................................................................385 Layout drawing of KomVision system....................................................................................................385 Chassis part......................................................................................................................385 Around cab and floor..............................................................................................................386 KomVision system diagram..........................................................................................................386 Function of KomVision system......................................................................................................387 KomVision controller......................................................................................................................388 Structure of KomVision controller.....................................................................................................388 Structure of KomVision camera.........................................................................................................392 Overload warning device...................................................................................................................393 Outline...............................................................................................................................393 Function..........................................................................................................................393 Structure.........................................................................................................................393 Sensor....................................................................................................................................394 Ambient pressure sensor...............................................................................................................396 Charge (boost) pressure and temperature sensor........................................................................................397 Coolant temperature sensor............................................................................................................398 Ne (crankshaft) speed sensor..........................................................................................................398 Bkup (camshaft) speed sensor..........................................................................................................399 Common rail pressure sensor...........................................................................................................399 Exhaust manifold pressure sensor......................................................................................................400 EGR orifice temperature sensor........................................................................................................400 Variable flow turbocharger motor (with built-in position sensor)......................................................................401 EGR valve (with built-in position sensor).............................................................................................402 EGR valve lift sensor.................................................................................................................403 KVGT speed sensor.....................................................................................................................404 KVGT position sensor..................................................................................................................405 Mass air flow and temperature sensor..................................................................................................406 KDOC inlet temperature sensor.........................................................................................................407 KDOC outlet temperature sensor........................................................................................................407 Crankcase pressure sensor.............................................................................................................408 Engine oil level sensor...............................................................................................................409 Fuel level sensor.....................................................................................................................410 WIF (Water-In-Fuel detection) sensor..................................................................................................411 Coolant level sensor..................................................................................................................412 Hydraulic oil temperature sensor..................................................................................................413 Air cleaner clogging sensor...........................................................................................................413 Overload Caution sensor...............................................................................................................414 Swing proximity sensor................................................................................................................415 Brake sensors.........................................................................................................................415 Brake accumulator low pressure sensor (CN-P60)....................................................................................416 Brake stop light sensor (CN-S19)..................................................................................................416 Service brake pressure sensor (CN-S40)............................................................................................416 Service brake pressure sensor (CN-P62)............................................................................................416 Park brake pressure sensor (CN-P61)...............................................................................................417 PPC pressure sensors..............................................................................................................417 DPF-SCR Area......................................................................................................................418 Main valve sensor.....................................................................................................................419 PPC levers................................................................................................................................420 LH PPC lever..........................................................................................................................420 RH PPC lever..........................................................................................................................421 1st attachment circuit hydraulic performance (main valve bypassed)........................................................................422 Travel system.............................................................................................................................423 Travel circuit........................................................................................................................423 Travel Motor Performance..........................................................................................................424 Auto-grease pump......................................................................................................................426 Overview..........................................................................................................................427 Display and control unit..........................................................................................................427 LED-display.......................................................................................................................428 Push buttons......................................................................................................................428 Three-digit LED display...........................................................................................................429 Check central lubrication system, fill up grease..................................................................................430 Lubrication diagrams......................................................................................................................431 Auto-grease pump with one-piece boom..................................................................................................431 Auto-grease pump with two-piece boom..................................................................................................432 Manual system one-piece boom..........................................................................................................433 Manual system two-piece boom..........................................................................................................434 Standard value table for engine related parts.............................................................................................436 Standard value table for chassis related parts............................................................................................444 Flow control characteristic of PC valve (STD).........................................................................................456 PM clinic service.........................................................................................................................457 Check sheet...........................................................................................................................458 STANDARD VALUE TABLE..........................................................................................................................435 Engine and cooling system.................................................................................................................468 Test engine speed.....................................................................................................................468 Method for testing engine speed.......................................................................................................468 Replacing the fan belt....................................................................................................................516 Measurement of clearance in swing circle bearing..........................................................................................517 Inspection and adjustment of hydraulic oil pressure in hydraulic circuit for work equipment, swing and travel.............................518 Measurement...........................................................................................................................518 Adjustment............................................................................................................................519 Inspection and adjustment of control circuit oil pressure.................................................................................521 Measurement...........................................................................................................................521 Procedure for pressure reducing adjustment............................................................................................522 Inspection and adjustment of pump PC (valve inlet) control oil pressure...................................................................523 Measurement...........................................................................................................................523 Adjustment............................................................................................................................525 Inspection and adjustment of pump LS differential pressure................................................................................526 Measurement...........................................................................................................................526 Adjustment............................................................................................................................528 Measurement of solenoid valve output pressure.............................................................................................529 Checking Proportional Control PPC Circuit.............................................................................................531 Adjustment of work equipment and swing PPC valve..........................................................................................532 Measuring and adjusting quick coupler control valve output pressure.......................................................................533 Testing travel motor relief pressure......................................................................................................534 Measuring travel motor relief pressure................................................................................................534 Testing propshaft speed...................................................................................................................535 Measuring rotating speed of propshaft.................................................................................................535 Testing transmission clutch control circuit...............................................................................................536 Description...........................................................................................................................536 Inspection of locations of hydraulic drift of work equipment..............................................................................538 Release of remaining pressure in hydraulic circuit........................................................................................540 Measurement of oil leakage................................................................................................................541 Air bleeding of various parts.............................................................................................................544 Inspection procedures for diode...........................................................................................................547 Electrical system.........................................................................................................................548 Special function of monitor panel.....................................................................................................548 Service mode..........................................................................................................................558 Method for checking pre-defined monitoring information................................................................................561 Table of self-define monitoring.......................................................................................................575 Abnormality record menu...............................................................................................................586 Method for confirming maintenance record..............................................................................................591 Method For Operating Maintenance Mode Setting.........................................................................................592 Method for operating phone number entry setting.......................................................................................596 Diagnostic tests menu.................................................................................................................609 Adjustment menu.......................................................................................................................618 KOMTRAX settings menu.................................................................................................................626 Method for starting up KOMTRAX terminal...............................................................................................630 Inspection and adjustment of ECSS (ACCU pressure).........................................................................................635 Maintenance...........................................................................................................................635 Inspection and adjustment of Tool control.................................................................................................638 Changing the lubrication interval times...................................................................................................644 Adjust rearview camera angle..............................................................................................................646 Method for adjusting rear view camera angle...........................................................................................646 Adjust KomVision camera angle.............................................................................................................648 Tools for adjusting KomVision camera angle............................................................................................648 Method for adjusting KomVision camera angle...............................................................................................649 Angle adjustment method for front R.H. camera, rear R.H. camera, and rear L.H. camera.................................................649 Angle adjustment method for rear camera...............................................................................................650 Adjust KomVision related items............................................................................................................652 Setting of KomVision (main setting)...................................................................................................653 Method for setting KomVision (main setting).......................................................................................653 Setting of KomVision (camera setting).................................................................................................655 Method for setting KomVision (camera setting).....................................................................................655 Setting of KomVision (camera calibration).............................................................................................655 Method for setting of KomVision (camera calibration)..............................................................................656 TESTING AND ADJUSTING.........................................................................................................................465 TROUBLESHOOTING...............................................................................................................................667 Troubleshooting...........................................................................................................................667 Troubleshooting by failure code (Display of code).........................................................................................668 Failure code table (Display of code)..................................................................................................668 Failure code [DB30KR] – Joystick steering controller malfunction..........................................................................687 Failure code [DA22KK] – Pump solenoid power low error.....................................................................................688 Failure code [DCS2KK] – Machine controller solenoid power voltage low error...............................................................690 Failure code [DWB5KY] – Hot short circuit in 4th outrigger solenoid.......................................................................692 OTHER.........................................................................................................................................695 Hydraulic circuit diagram.................................................................................................................699 Hydraulic circuit diagram (1/3).......................................................................................................699 Hydraulic circuit diagram (2/3).......................................................................................................701 Hydraulic circuit diagram (3/3).......................................................................................................703 Wiring circuit diagram....................................................................................................................705 Contents..............................................................................................................................705 1-0 Power Supply......................................................................................................................707 1-1 Grounding.........................................................................................................................708 1-2 Model Select......................................................................................................................709 2-0 Engine PW180......................................................................................................................710 2-1 Engine PW180......................................................................................................................711 2-2 Engine PW48, PW160................................................................................................................712 2-3 Engine PW48, PW160................................................................................................................713 2-4 Engine Power Supply, Air Intake...................................................................................................714 2-5 Engine Start......................................................................................................................715 2-6 2nd ENGINE STOP, OPERATING LAMP...................................................................................................716 2-7 ADBLUE/DEF DATALINK...............................................................................................................717 2-8 ADDBLUE/DPF POWER.................................................................................................................718 3-0 REFUELING SYSTEM, FUEL DIAL.......................................................................................................719 3-1 BRAKE.............................................................................................................................720 3-2 EPC...............................................................................................................................721 3-3 CRUISE CONTROL....................................................................................................................722 3-4 TRAVEL............................................................................................................................723 3-5 SUS-LOCK, SPEEDSNR, JOYSTICK POTI.................................................................................................724 3-6 SENSORS ENGINE & OIL..............................................................................................................725 4-0 QUICK COUPLER, PRESSURE SENSOR....................................................................................................726 4-1 PPC REDUCTION, FLOATING, PRESSURE SENSOR..........................................................................................727 4-2 SWING LOCK, PRESSURE SENSOR, JOYSTICK SW..........................................................................................728 4-3 BUCKET/2ATT SWITCHING.............................................................................................................729 5-0 LOWER ATTACHMENTS.................................................................................................................730 5-1 ROTO-TILT.........................................................................................................................731 5-2 BOOM/STABILISER, AUXILARY CIRCUIT, BREAKER........................................................................................732 6-0 ROAD LIGHT........................................................................................................................733 6-1 INDICATOR, SIDE LIGHT, STOP LIGHT.................................................................................................734 6-2 ARM MARKER LIGHT + QC SIGNAL BOOM.................................................................................................735 6-3 BEACON, TRAILER (OPT).............................................................................................................736 6-4 WORKLAMP..........................................................................................................................737 6-5 WORKLAMP..........................................................................................................................738 6-6 CAMERA SW, SERVICE-CON., KOMTRAX, KOMNET..........................................................................................739 6-7 KOMVISION.........................................................................................................................740 7-0 AIR CONDITION, HEATED MIRROR......................................................................................................741 7-1 RADIO, 12V, CIGAR LIGHTER, ROOM LAMP..............................................................................................742 7-2 PPC-LOCK, STARTER CUT, SEAT.......................................................................................................743 7-3 ID-KEY............................................................................................................................744 7-4 HORN, TRAVEL ALARM................................................................................................................745 7-5 WIPER.............................................................................................................................746 8-0 CLS...............................................................................................................................747 9-0 JOYSTICK STEERING.................................................................................................................748 10-0 FAN CLUTCH, TOOL CONTROL.........................................................................................................749 11-0 ECSS.............................................................................................................................750 Harness Summary.......................................................................................................................751 Harness Summary.......................................................................................................................752 Connector List........................................................................................................................753 Connector List........................................................................................................................754 Connector List........................................................................................................................755 Connector List........................................................................................................................756 Connector List........................................................................................................................757 Connector List........................................................................................................................758 Connector List........................................................................................................................759 Pin Location List.....................................................................................................................760 Pin Location List.....................................................................................................................761 Pin Location List.....................................................................................................................762 Pin Location List.....................................................................................................................763 Pin Location List.....................................................................................................................764 Pin Location List.....................................................................................................................765 Pin Location List.....................................................................................................................766 Pin Location List.....................................................................................................................767 Pin Location List.....................................................................................................................768 Pin Location List.....................................................................................................................769 Pin Location List.....................................................................................................................770 Pin Location List.....................................................................................................................771 Pin Location List.....................................................................................................................772 Pin Location List.....................................................................................................................773 Pin Location List.....................................................................................................................774 Pin Location List.....................................................................................................................775 Pin Location List.....................................................................................................................776 Pin Location List.....................................................................................................................777 Pin Location List.....................................................................................................................778 Pin Location List.....................................................................................................................779 Pin Location List.....................................................................................................................780 Pin Location List.....................................................................................................................781 Pin Location List.....................................................................................................................782 PinLocation List......................................................................................................................783 PinLocation List......................................................................................................................784 PinLocation List......................................................................................................................785 Pin Location List.....................................................................................................................786 Pin Location List.....................................................................................................................787 Pin Location List.....................................................................................................................788 Pin Location List.....................................................................................................................789 Pin Location List.....................................................................................................................790 Pin Location List.....................................................................................................................791 Pin Location List.....................................................................................................................792 Pin Location List.....................................................................................................................793 Pin Location List.....................................................................................................................794 Pin Location List.....................................................................................................................795 Pin Location List.....................................................................................................................796 Pin Location List.....................................................................................................................797 Pin Location List.....................................................................................................................798 Pin Location List.....................................................................................................................799 Pin Location List.....................................................................................................................800 PARTS LIST............................................................................................................................801 PARTS LIST............................................................................................................................802 PARTS LIST............................................................................................................................803 PARTS LIST............................................................................................................................804 PARTS LIST............................................................................................................................805 Connector diagram.........................................................................................................................807 Connector diagram 1/10................................................................................................................807 Connector table for revolving frame harness 1.....................................................................................807 Connector diagram 2/10................................................................................................................808 Connector table for revolving frame harness 2.....................................................................................808 Connector diagram 3/10................................................................................................................809 Connector table for operator‘s cab wiring harness (Part 1/2)......................................................................809 Connector diagram 4/10................................................................................................................810 Connector table for operators cab wiring harness (Part 2/2).......................................................................810 Connector diagram (5/10)..............................................................................................................811 Connector table switch group......................................................................................................811 Connector diagram (6/10)..............................................................................................................812 Connector table steering..........................................................................................................812 Connector diagram (7/10)..............................................................................................................813 Connector table various wiring harness............................................................................................813 Connector diagram (8/10)..............................................................................................................814 Connector table optionally wiring harness (Part 1/3)..............................................................................814 Connector diagram (9/10)..............................................................................................................815 Connector table optionally wiring harness (Part 2/3)..............................................................................815 Connector diagram (10/10).............................................................................................................816
DESCRIPTION:
KOMATSU PW148-11 SHOP MANUAL VENBM68001 – PDF DOWNLOAD
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following sections. These sections are further divided into each main group of components.
General
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.
Structure and function
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. Testing, adjusting and troubleshooting
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this section. Disassembly and assembly
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations. Maintenance standard
This section gives the judgement standards when inspecting disassembled parts.
S.S 28/12/24
