Hitachi ZX250LC-5B ZX250LCN-5B Hydraulic Excavator Workshop Manual (WDCA-EN-00)
File Details:
Hitachi ZX250LC-5B ZX250LCN-5B Hydraulic Excavator Workshop Manual (WDCA-EN-00)
- Manual Language:English
- Downloadable:Yes
- Pages: 582
- Size: 14.1 MB
- Format:PDF
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Description:
Hitachi ZX250LC-5B ZX250LCN-5B Hydraulic Excavator Workshop Manual (WDCA-EN-00)
- To The Reader
This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine.
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 ZX250LC-5B ZX250LCN-5B Hydraulic Excavator Workshop Manual (WDCA-EN-00)
WDCA-EN-00......................................................................... 1 INTRODUCTION....................................................................... 3 SYMBOL AND ABBREVIATION............................................................ 5 SAFETY............................................................................. 7 SECTION AND GROUP CONTENTS......................................................... 47 SECTION 1 GENERAL.................................................................. 49 Group 1 Precautions for Disassembling and Assembling........................... 51 Precautions for Disassembling and Assembling............................... 51 Group 2 Tightening............................................................. 57 Tightening Bolts and Nuts.................................................. 57 Piping Joint............................................................... 60 Group 3 Painting............................................................... 65 Painting................................................................... 65 Group 4 Bleeding Air........................................................... 67 Bleeding Air from Hydraulic Oil Tank....................................... 67 Bleeding Air from Hydraulic System......................................... 68 Bleeding Air from Fuel System.............................................. 69 Bleeding Air from Radiator................................................. 71 Group 5 Pressure Release Procedure............................................. 73 Hydraulic Circuit Pressure Release Procedure............................... 73 Group 6 Preparation............................................................ 75 Preparation before Inspection and Maintenance.............................. 75 SECTION 2 MAINTENANCE STANDARD..................................................... 79 Group 1 Upperstructure......................................................... 81 Pump Device................................................................ 81 Swing Motor................................................................ 85 Group 2 Undercarriage.......................................................... 89 Travel Motor............................................................... 89 Sprocket................................................................... 91 Front Idler................................................................ 93 Upper Roller............................................................... 95 Lower Roller............................................................... 96 Track...................................................................... 97 Group 3 Front Attachment.......................................................101 Pin and Bushing............................................................101 Side Cutter (2021232, 2021233).............................................103 Point (4512365)............................................................104 Standard Dimensions for Arm and Bucket Connection..........................105 Standard Dimensions for Arm and Boom Connection............................106 Cylinder...................................................................107 SECTION 3 UPPERSTRUCTURE...........................................................111 Group 1 Cab....................................................................113 Removal and Installation of Cab............................................113 Dimensions of Cab Glass....................................................129 Group 2 Counterweight..........................................................149 Removal and Installation of Counterweight..................................149 Group 3 Main Frame.............................................................151 Removal and Installation of Main Frame.....................................151 Group 4 Engine.................................................................159 Removal and Installation of Engine.........................................159 Group 5 Radiator Assembly......................................................183 Replacement of Radiator, Oil Cooler, and Intercooler.......................183 Group 6 Hydraulic Oil Tank.....................................................197 Removal and Installation of Hydraulic Oil Tank.............................197 Group 7 Fuel Tank..............................................................205 Removal and Installation of Fuel Tank......................................205 Group 8 Pump Device............................................................215 Removal and Installation of Pump Device....................................215 Removal and Installation of Coupling.......................................225 Disassembly of Pump Device.................................................229 Assembly of Pump Device....................................................237 Disassembly of Regulator...................................................249 Assembly of Regulator......................................................251 Disassembly of Solenoid Valve..............................................253 Assembly of Solenoid Valve.................................................255 Structure of Pilot Pump....................................................257 Group 9 Control Valve..........................................................259 Removal and Installation of Control Valve..................................259 Disassembly of Housing.....................................................279 Assembly of Housing........................................................281 Disassembly of Control Valve (A Side)......................................283 Assembly of Control Valve (A Side).........................................291 Disassembly of Control Valve (B Side)......................................303 Assembly of Control Valve (B Side).........................................312 Group 10 Swing Device..........................................................325 Removal and Installation of Swing Device...................................325 Disassembly of Swing Device................................................329 Assembly of Swing Device...................................................334 Disassembly of Swing Motor.................................................341 Assembly of Swing Motor....................................................344 Group 11 Pilot Valve...........................................................347 Removal and Installation of Pilot Valve (Left).............................347 Removal and Installation of Pilot Valve (Right)............................353 Removal and Installation of Travel Pilot Valve.............................361 Disassembly of Pilot Valves (Right and Left)...............................365 Assembly of Pilot Valves (Right and Left)..................................368 Disassembly of Travel Pilot Valve..........................................371 Assembly of Travel Pilot Valve.............................................375 Group 12 Solenoid Valve........................................................381 Removal and Installation of Pilot Shut-Off Solenoid Valve..................381 Removal and Installation of 5-SpoolSolenoid Valve Unit.....................385 Removal and Installation of 2-SpoolSolenoid Valve Unit.....................389 Disassembly of Pilot Shut-Off SolenoidValve................................393 Assembly of Pilot Shut-Off Solenoid Valve..................................395 Structure of 5-Spool Solenoid Valve Unit...................................397 Structure of 2-Spool Solenoid Valve Unit...................................399 Group 13 Signal Control Valve..................................................401 Removal and Installation of Signal Control Valve...........................401 Structure of Signal Control Valve..........................................407 Group 14 Muffler Filter........................................................409 Removal and Installation of Muffler Filter.................................409 Disassembly of Muffler Filter..............................................421 Assembly of Muffler Filter.................................................423 SECTION 4 UNDERCARRIAGE............................................................427 Group 1 Swing Bearing..........................................................429 Removal and Installation of Swing Bearing..................................429 Disassembly of Swing Bearing...............................................433 Assembly of Swing Bearing..................................................436 Group 2 Travel Device..........................................................439 Removal and Installation of Travel Device..................................439 Disassembly of Travel Device...............................................443 Assembly of Travel Device..................................................447 Disassembly of Travel Motor................................................455 Assembly of Travel Motor...................................................458 Disassembly of Brake Valve.................................................463 Assembly of Brake Valve....................................................465 Precautions for Using Floating Seal........................................467 Group 3 Center Joint...........................................................469 Removal and Installation of Center Joint...................................469 Disassembly of Center Joint................................................473 Assembly of Center Joint...................................................475 Replacement of Body and Spindle............................................478 Group 4 Track Adjuster.........................................................479 Removal and Installation of Track Adjuster.................................479 Disassembly of Front Idler.................................................483 Assembly of Front Idler....................................................486 Disassembly of Track Adjuster..............................................489 Assembly of Track Adjuster.................................................493 Precautions for Using Floating Seal........................................497 Group 5 Upper and Lower Rollers................................................499 Removal and Installation of Upper Roller...................................499 Removal and Installation of Lower Roller...................................503 Disassembly of Lower Roller................................................509 Assembly of Lower Roller...................................................511 Precautions for Using Floating Seal........................................513 Group 6 Track..................................................................515 Removal and Installation of Track..........................................515 SECTION 5 FRONT ATTACHMENT.........................................................523 Group 1 Front Attachment.......................................................525 Removal and Installation of Front Attachment...............................525 Group 2 Cylinder...............................................................533 Removal and Installation of Boom Cylinder..................................533 Removal and Installation of Arm Cylinder...................................537 Removal and Installation of Bucket Cylinder................................543 Removal and Installation of Positioning Cylinder...........................547 Disassembly of Boom, Arm, Bucket Cylinders.................................551 Assembly of Boom, Arm, Bucket Cylinders....................................555 Disassembly of Positioning Cylinder........................................559 Assembly of Positioning Cylinder...........................................562 Group 3 Hose Rupture Valve.....................................................565 Removal and Installation of Hose Rupture Valve for Boom Cylinder...........565 Removal and Installation of Hose Rupture Valve for Arm Cylinder............567 Removal and Installation of Hose Rupture Valve for Positioning Cylinder....569 Structure of Hose Rupture Valve for Boom Cylinder (Right)..................571 Structure of Hose Rupture Valve for Boom Cylinder (Left)...................573 Structure of Hose Rupture Valve for Arm Cylinder...........................575 Structure of Hose Rupture Valve for Positioning Cylinder...................577 SERVICE MANUAL REVISION REQUEST FORM...............................................581
Please Note:
⦁ This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
⦁ This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
⦁ Require some other service manual or have any queries: please WRITE to us at [email protected]
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