KOMATSU PC12R-8 PC15R-8 HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (WEBM000100) KOMATSU PC12R-8 PC15R-8
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KOMATSU PC12R-8 PC15R-8 HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (WEBM000100) KOMATSU PC12R-8 PC15R-8
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator 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. The manual is divided into chapters on each main group of components; these chapters are further divided into the following sections.
- 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 AND ADJUSTING
This sections 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.
TABLE OF CONTENTS:
KOMATSU PC12R-8 PC15R-8 HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (WEBM000100) KOMATSU PC12R-8 PC15R-8
CONTENTS..................................................................................... 3 LIST OF REVISED PAGES........................................................................ 5 SAFETY....................................................................................... 7 FOREWORD..................................................................................... 9 HOW TO READ THE SHOP MANUAL.................................................................. 10 HOISTING INSTRUCTIONS........................................................................ 11 STANDARD TIGHTENING TORQUE................................................................... 12 COATING MATERIALS............................................................................ 13 ELECTRIC WIRE CODE........................................................................... 14 WEIGHT TABLE................................................................................. 15 TABLE OF OIL AND COOLANT QUANTITIES.......................................................... 16 10. STRUCTURE AND FUNCTION................................................................... 17 POWER TRAIN.............................................................................. 18 SWING CIRCLE............................................................................. 20 SWING MOTOR.............................................................................. 21 FINAL DRIVE.............................................................................. 22 TRACK FRAME AND RECOIL SPRING............................................................ 23 CARRIER ROLLER........................................................................... 25 STEEL SHOE............................................................................... 26 HYDRAULIC SYSTEM......................................................................... 27 HYDRAULIC CIRCUIT DIAGRAM................................................................ 31 HYDRAULIC PUMP........................................................................... 35 CONTROL VALVE............................................................................ 40 CLSS..................................................................................... 48 SWIVEL JOINT............................................................................. 91 TRAVEL MOTOR............................................................................. 93 CYLINDERS................................................................................ 96 VALVE CONTROL............................................................................100 ACCUMULATOR..............................................................................101 PPC VALVE................................................................................102 SOLENOID VALVE...........................................................................107 CUTTING SHOVEL CONTROL VALVE.............................................................109 ELECTRICAL CIRCUIT DIAGRAM...............................................................111 20. TESTING AND ADJUSTMENTS..................................................................113 NORMAL OR STANDARD TECHNICAL DATA........................................................114 SPECIAL TOOLS............................................................................135 CHECKING THE ENGINE SPEED................................................................137 ADJUSTMENT OF VALVE CLEARANCE............................................................138 MEASUREMENT OF THE COMPRESSION PRESSURE..................................................139 CONTROL AND ADJUSTMENT OF THE TENSION OF THE FAN BELT....................................140 CONTROL AND ADJUSTMENT OF THE INJECTION TIMING...........................................141 CONTROL AND ADJUSTMENT OF THE ACCELERATOR STROKE.........................................143 ADJUSTMENT OF THE STROKE OF THE BLADE COMMAND LEVER......................................144 CONTROL AND ADJUSTMENT OF THE STROKE OF THE TRAVEL LEVER.................................145 CENTERING ADJUSTMENT OF THE BOOM SWING COMMAND PEDAL.....................................146 ADJUSTMENT OF THE PPC VALVE CLEARANCES...................................................147 ADJUSTMENT OF THE RUBBER PAD AND SAFETY MICROSWITCH FOR SERVO-CONTROL ENGAGEMENT.........148 CONTROL AND ADJUSTMENT OF THE TRACK-SHOE TENSION.........................................149 CONTROL AND REGULATION OF PRESSURE IN THE HYDRAULIC CIRCUIT..............................150 CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE....156 REGULATION OF THE PC VALVE...............................................................158 CONTROL AND REGULATION OF THE SERVOCONTROL POWER SUPPLY..................................159 ELIMINATION OF RESIDUAL PRESSURES - PRESSURISATION OF THE TANK...........................161 BLEEDING AIR FROM THE HYDRAULIC CIRCUITS.................................................162 CONTROL OF HYDRAULIC DRIFTS - ANALYSIS OF THE CAUSES OF A DRIFT..........................164 CHECKING FOR ANY LEAKAGES INSIDE THE WORKING EQUIPMENT CYLINDERS.........................170 CHECKING FOR ANY LEAKAGES INSIDE THE SWING MOTOR.........................................171 METHODS FOR TESTING FOR LEAKAGES INSIDE THE SWIVEL JOINT.................................172 30. REMOVAL AND INSTALLATION.................................................................175 HOW TO READ THE MANUAL...................................................................177 PRECAUTIONS TO BE TAKEN WHILE WORKING....................................................178 SPECIAL TOOLS............................................................................179 STARTER MOTOR............................................................................181 ALTERNATOR...............................................................................182 PUMP GROUP...............................................................................183 INJECTION NOZZLES........................................................................184 CYLINDER HEAD............................................................................185 OIL COOLER...............................................................................189 RADIATOR.................................................................................190 ENGINE HOOD..............................................................................191 CAB AND CANOPY...........................................................................192 HEATING FAN..............................................................................194 REAR COUNTERWEIGHT.......................................................................195 TOP COVER AND SIDE PANELS................................................................196 HYDRAULIC OIL TANK.......................................................................198 FUEL TANK................................................................................201 ENGINE PUMP GROUP........................................................................202 PUMP.....................................................................................205 ENGINE PUMP COUPLING.....................................................................206 CONTROL VALVE............................................................................207 RIGHT-HAND PPC VALVE (BOOM-BUCKET).......................................................209 LEFT-HAND PPC VALVE (ARM-BUCKET).........................................................210 SERVOCONTROL SOLENOID GROUP..............................................................211 SWIVEL JOINT.............................................................................213 SWING MOTOR..............................................................................214 REVOLVING FRAME..........................................................................215 SWING CIRCLE.............................................................................217 TRAVEL MOTOR.............................................................................218 RUBBER TRACK SHOES.......................................................................219 TRACK SHOES..............................................................................220 SPROCKET WHEEL...........................................................................221 FINAL DRIVE..............................................................................222 IDLER AND RECOIL SPRING ASSEMBLY.........................................................233 TRACK ROLLERS............................................................................236 BOOM CYLINDER............................................................................237 ARM CYLINDER.............................................................................238 BUCKET CYLINDER..........................................................................239 BOOM SWING CYLINDER......................................................................240 BLADE CYLINDER...........................................................................241 WORKING EQUIPMENT CYLINDER...............................................................242 UPPER WORKING EQUIPMENT..................................................................248 BUCKET...................................................................................250 ARM......................................................................................251 BOOM.....................................................................................253 BOOM SWING SUPPORT.......................................................................255 BLADE....................................................................................256 40. STANDARD MAINTENANCE.....................................................................257 SWING CIRCLE.............................................................................258 TRACK FRAME AND RECOIL SPRING............................................................259 IDLER....................................................................................260 FINAL DRIVE..............................................................................261 SPROCKET.................................................................................262 TRACK ROLLER.............................................................................263 TRACK SHOE...............................................................................264 HYDRAULIC PUMP...........................................................................266 CONTROL VALVE............................................................................268 SWIVEL JOINT.............................................................................280 SWING MOTOR..............................................................................281 TRAVEL MOTOR.............................................................................282 PPC VALVE................................................................................286 CYLINDERS................................................................................290 WORK EQUIPMENT...........................................................................292
PLEASE NOTE:
⦁ This is the SAME exact manual used by your dealers to fix your vehicle.
⦁ The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
⦁ Any queries / doubts regarding your purchase, please feel free to contact [email protected]
Reginald Cyrus –
They quickly replace a defective product.