Part of the Hitachi Repair Manuals.
All 305 pages of this Hitachi EX550–EX600 series service manual PDF focus on one job: tearing down and rebuilding your EX550-5, EX550LC-5, EX600H-5, or EX600LCH-5 hydraulic excavator to factory standard. You get step-by-step remove-and-install procedures for the main pump, control valve, swing device, travel motor, center joint, and boom cylinders, each backed by maintenance standards listing exact wear limits. A full torque chart and piping joint section covers the fasteners across the whole machine, from cab glass to track shoes. Pull the track frame mounting bolts down to 2160 N·m, and set the 1-3/16-12UNF ORS hydraulic fittings to 175 N·m. Swing motor whining? Tracks sagging? This is where the real answers live. Bookmarked with a live text layer: search any spec, jump straight to the procedure, and get wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1-2 | Manual Composition, Page Numbering, Safety Alert Symbols, Unit Conversion |
| Safety | 3-30 | Emergency Procedures, Protective Clothing, Fire Prevention, Machine Inspection, Maintenance Safety, Hazardous Fluid Handling |
| General Information | 31-48 | Group 1 Precautions for Disassembling and Assembling (Maintenance Standard Terminol-Ogy), Group 2 Tightening (Tightening Torque Specifications, Torque Chart, Piping Joint) |
| Group 1 Cab | 51-58 | Remove and Install Cab, Dimensions of the Cab Glass |
| Group 2 Counterweight | 59-60 | Remove and Install Counter-Weight |
| Group 3 Pump Device | 61-86 | Remove and Install Pump Device, Disassemble Pump Transmission, Assemble Pump Transmission, Remove and Install Main Pump |
| Group 4 Control Valve | 87-126 | Remove and Install Control Valve, Disassemble Control Valve 1, Assemble Control Valve 1, Disassemble Control Valve 2 |
| Group 5 Swing Device | 127-148 | Remove and Install Swing Device, Disassemble Swing Device, Assemble Swing Device, Disassemble Swing Motor |
| Group 6 Pilot Valve | 149-168 | Remove and Install Right Pilot Valve (Front Attachment), Remove and Install Left Pilot Valve (Front Attachment), Remove and Install Travel Pilot Valve |
| Group 7 Pilot Shut-Off Valve | 169-176 | Remove and Install Pilot Shut-Off Valve, Disassemble Pilot Shut-Off Valve, Assemble Pilot Shut-Off Valve |
| Group 8 Solenoid Valve Unit Solenoid Valve EHC Valve | 177-182 | Remove and Install Three-Spool Solenoid Valve, Disassemble and Assemble Three-Spool Solenoid Valve 5 Valve |
| Undercarriage | 183-278 | Group 1 Swing Bearing (Remove and Install Swing Bearing, Disassemble Swing Bearing, Assemble Swing Bearing) |
| Front Attachment | 279-304 | Group 1 Front Attachment (Preparation for Removing and In-Stalling Cylinder, Remove and Install Cylinder, Maintenance Standards, Air Bleeding Procedure) |
| Revision Request Form | 305 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track frame mounting bolt torque | 2160 N·m (225 kgf·m, 1590 lbf·ft) | p. 38 |
| ORS fittings for hydraulic hoses and piping (1-3/16-12UNF) | 175 N·m (18 kgf·m, 130 lbf·ft) | p. 37 |
| ORS fittings for hydraulic hoses and piping (1-7/16-12UNF) | 205 N·m (21 kgf·m, 152 lbf·ft) | p. 37 |
| Filter (24) installation torque | 4.9 N⋅m (0.5 kgf⋅m, 3.6 lbf⋅ft) | p. 54 |
| Hose (22 mm) torque | 69 N⋅m (50 lbf⋅ft) | p. 192 |
| Hose (27 mm) torque | 93 N⋅m (69 lbf⋅ft) | p. 192 |
| Bleeder plug tightening torque | 9.8 N⋅m | p. 291 |
| Boom cylinder weight | 515 kg | p. 297 |
| Arm cylinder weight | 800 kg | p. 297 |
| Cab Weight | 260 kg | p. 53 |
| Counterweight Weight | 10500 kg | p. 59 |
| Main Pump Weight | 125 kg | p. 62 |
