Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Workshop Manual (WDDD-EN-00)
File Details:
Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Workshop Manual (WDDD-EN-00)
- Manual Language:English
- Pages: 601
- Size: 15.3 MB
- Format:PDF
- Downloadable:Yes
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Description:
Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Workshop Manual (WDDD-EN-00)
To The Reader
This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine. The machine specification and description according to destination may be explained on this manual.
Be sure to thoroughly read this manual for correct product information and service procedures.
If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using “Service Manual Revision Request Form” at the end of this manual.
Additional References
Please refer to the other materials (operator’s manual, parts catalog, engine technical material and Hitachi training material etc.) in addition to this manual.
Manual Composition
This manual consists the Technical Manual, the Workshop Manual and the Engine Manual.
Information included in the Technical Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures.
Information included in the Engine Manual: Technical information needed for redelivery and delivery and maintenance and repair of the machine, operation and activation of all devices and systems, troubleshooting and assemble / disassemble procedures.
Table Of Contents:
Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Workshop Manual (WDDD-EN-00)
WDDD-EN-00........................................................................ 1 INTRODUCTION...................................................................... 2 SYMBOL AND ABBREVIATION........................................................... 4 SAFETY............................................................................ 6 SECTION AND GROUP CONTENTS........................................................ 46 SECTION 1 GENERAL................................................................. 50 Group 1 Precautions for Disassembling and Assembling.......................... 52 Precautions for Disassembling andAssembling............................... 52 Group 2 Tightening............................................................ 58 Tightening Bolts and Nuts................................................. 58 Piping Joint.............................................................. 61 Group 3 Painting.............................................................. 66 Painting.................................................................. 66 Group 4 Bleeding Air.......................................................... 68 Bleeding Air from Hydraulic Oil Tank...................................... 68 Bleeding Air from Hydraulic System........................................ 69 Bleeding Air from Fuel System............................................. 70 Bleeding Air from Radiator................................................ 72 Group 5 Pressure Release Procedure............................................ 74 Hydraulic Circuit Pressure Release Procedure.............................. 74 Group 6 Preparation........................................................... 76 Preparation before Inspection andMaintenance.............................. 76 SECTION 2 MAINTENANCE STANDARD.................................................... 80 Group 1 Upperstructure........................................................ 82 Pump Device............................................................... 82 Swing Motor............................................................... 86 Group 2 Undercarriage......................................................... 90 Travel Motor.............................................................. 90 Sprocket ................................................................. 92 Front Idler............................................................... 94 Upper Roller.............................................................. 96 Lower Roller.............................................................. 97 Track..................................................................... 98 Group 3 Front Attachment......................................................102 Pin and Bushing...........................................................102 Side Cutter...............................................................104 Point.....................................................................104 Side Cutter...............................................................105 Point.....................................................................105 Standard Dimensions for Arm and BucketConnection..........................106 Standard Dimensions for Arm and BoomConnection............................107 Cylinder..................................................................108 SECTION 3 UPPERSTRUCTURE..........................................................112 Group 1 Cab...................................................................114 Removal and Installation of Cab...........................................114 Dimensions of Cab Glass...................................................130 Group 2 Counterweight.........................................................150 Removal and Installation of Counterweight.................................150 Group 3 Main Frame............................................................152 Removal and Installation of Main Frame....................................152 Group 4 Engine................................................................160 Removal and Installation of Engine........................................160 Group 5 Radiator Assembly.....................................................184 Replacement of Radiator and Intercooler...................................184 Replacement of Oil Cooler.................................................196 Group 6 Hydraulic Oil Tank....................................................202 Removal and Installation of Hydraulic OilTank.............................202 Group 7 Fuel Tank.............................................................210 Removal and Installation of Fuel Tank.....................................210 Group 8 Pump Device...........................................................218 Removal and Installation of Pump Device...................................218 Removal and Installation of Coupling......................................228 Disassembly of Pump Device................................................230 Assembly of Pump Device...................................................238 Disassembly of Regulator..................................................250 Assembly of Regulator.....................................................252 Disassembly of Solenoid Valve.............................................254 Assembly of Solenoid Valve................................................256 Structure of Pilot Pump...................................................258 Group 9 Control Valve.........................................................260 Removal and Installation of Control Valve.................................260 Disassembly of Housing....................................................280 Assembly of Housing.......................................................282 Disassembly of Control Valve (A Side).....................................284 Assembly of Control Valve (A Side)........................................292 Disassembly of Control Valve (B Side).....................................304 Assembly of Control Valve (B Side) .......................................313 Group 10 Swing Device.........................................................326 Removal and Installation of Swing Device..................................326 Disassembly of Swing Device...............................................330 Assembly of Swing Device..................................................336 Disassembly of Swing Motor................................................342 Assembly of Swing Motor...................................................345 Structure of Swing Parking Brake SwitchValve..............................348 Group 11 Pilot Valve..........................................................350 Removal and Installation of Pilot Valve(Left).............................350 Removal and Installation of Pilot Valve(Right)............................356 Removal and Installation of Travel PilotValve.............................364 Disassembly of Pilot Valves (Right and Left)..............................368 Assembly of Pilot Valves (Right and Left).................................371 Disassembly of Travel Pilot Valve.........................................374 Assembly of Travel Pilot Valve............................................378 Group 12 Solenoid Valve.......................................................384 Removal and Installation of Pilot Shut-OffSolenoid Valve .................384 Removal and Installation of 5-Spool SolenoidValve Unit....................388 Removal and Installation of 2-Spool SolenoidValve Unit....................392 Disassembly of Pilot Shut-Off SolenoidValve...............................396 Assembly of Pilot Shut-Off Solenoid Valve.................................398 Structure of 5-Spool Solenoid Valve Unit..................................400 Structure of 2-Spool Solenoid Valve Unit..................................402 Group 13 Signal Control Valve.................................................404 Removal and Installation of Signal ControlValve...........................404 Structure of Signal Control Valve.........................................410 Group 14 Muffler Filter.......................................................412 Removal and Installation of Muffler Filter................................412 Disassembly of Muffler Filter.............................................424 Assembly of Muffler Filter................................................426 Group 15 Fan Pump.............................................................428 Removal and Installation of Fan Pump......................................428 Structure of Fan Pump.....................................................432 Group 16 Fan Valve............................................................434 Removal and Installation of Fan Valve.....................................434 Structure of Fan Valve....................................................436 Structure of Solenoid Valve...............................................438 Group 17 Fan Motor............................................................440 Removal And Installation of Fan Motor.....................................440 Structure of Fan Motor....................................................444 SECTION 4UNDERCARRIAGE............................................................448 Group 1 Swing Bearing.........................................................450 Removal and Installation of Swing Bearing.................................450 Disassembly of Swing Bearing..............................................454 Assembly of Swing Bearing.................................................457 Group 2 Travel Device.........................................................460 Removal and Installation of Travel Device.................................460 Disassembly of Travel Device..............................................464 Assembly of Travel Device.................................................468 Disassembly of Travel Motor...............................................476 Assembly of Travel Motor..................................................479 Disassembly of Brake Valve................................................484 Assembly of Brake Valve...................................................486 Precautions for Using Floating Seal.......................................488 Group 3 Center Joint..........................................................490 Removal and Installation of Center Joint..................................490 Disassembly of Center Joint...............................................494 Assembly of Center Joint..................................................496 Replacement of Body and Spindle...........................................499 Group 4 Track Adjuster........................................................500 Removal and Installation of Track Adjuster................................500 Disassembly of Front Idler................................................504 Assembly of Front Idler...................................................507 Disassembly of Track Adjuster.............................................510 Assembly of Track Adjuster................................................514 Precautions for Using Floating Seal.......................................518 Group 5 Upper and Lower Rollers...............................................520 Removal and Installation of Upper Roller..................................520 Removal and Installation of Lower Roller..................................524 Disassembly of Lower Roller...............................................530 Assembly of Lower Roller..................................................532 Precautions for Using Floating Seal.......................................534 Group 6 Track.................................................................536 Removal and Installation of Track.........................................536 SECTION 5FRONT ATTACHMENT.........................................................544 Group 1 Front Attachment......................................................546 Removal and Installation of Front Attachment..............................546 Group 2 Cylinder..............................................................554 Removal and Installation of Boom Cylinder.................................554 Removal and Installation of Arm Cylinder..................................558 Removal and Installation of Bucket Cylinder...............................562 Removal and Installation of PositioningCylinder...........................566 Disassembly of Boom, Arm, and BucketCylinders.............................570 Assembly of Boom, Arm, and BucketCylinders................................574 Disassembly of Positioning Cylinder.......................................578 Assembly of Positioning Cylinder..........................................581 Group 3 Hose Rupture Valve....................................................584 Removal and Installation of Hose RuptureValve for Boom Cylinder...........584 Removal and Installation of Hose RuptureValve for Arm Cylinder............586 Removal and Installation of Hose RuptureValve for Positioning Cylinder....588 Structure of Hose Rupture Valve for BoomCylinder (Right) .................590 Structure of Hose Rupture Valve for BoomCylinder (Left)...................592 Structure of Hose Rupture Valve for ArmCylinder...........................594 Structure of Hose Rupture Valve forPositioning Cylinder...................596 SERVICE MANUAL REVISION REQUEST FORM..............................................600
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