Before you back off the track adjuster or pull a travel motor this afternoon, open the 571-page Takeuchi TB285 service manual PDF (OEM ID CM1E006) for this hydraulic excavator. Hydraulic schematics trace oil from the main pump through the control valve to the boom, arm, dozer and slew circuits, and wiring diagrams lay out the electrical side wire by wire. Disassembly and assembly fill the biggest share of the book, from crawler replacement and slew bearing work to pump, pilot valve and cylinder rebuilds, while a long troubleshooting chapter sorts faults by whole machine, travel, slew, boom and arm. Set rubber track tension to 160 to 180 mm (6.3 to 7.1 in.), then check boom and arm relief at 27.5 MPa (3988 PSI) and right slew relief at 24.0 MPa (3480 PSI). A made-up relief figure can split a hose under load. With bookmarks and searchable text, you can confirm which seal kit or bearing you need before you order.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Safety | 3-12 | Safety Precautions, Cautions When Working |
| Service Data | 13-96 | Dimensional Drawing, Specification Tables, Performance Criteria |
| Function | 97-172 | Hydraulic Pump, Control Valve, Travel Motor, Slew Motor |
| Drive and Travel Systems | 173-194 | Service Standards, Drive System Disassembly, Travel System Disassembly, Crawler Replacement, Idler and Track Adjuster Maintenance |
| Slew and Upper Frame Equipment | 195-210 | Slew Equipment Disassembly, Slew Motor Maintenance, Slew Bearing Replacement, Upper Frame Disassembly |
| Operating Devices and Attachments | 211-230 | Operating Device Disassembly, Control Lever Maintenance, Attachment Disassembly, Hoe Attachment, Bucket Maintenance |
| Hydraulic Components | 231-355 | Hydraulic Tank Maintenance, Hydraulic Pump Disassembly, Gear Pump Maintenance, Control Valve Disassembly, Pilot Valve Maintenance, Cylinder Disassembly |
| Travel and Slew Motors | 356-416 | Travel Motor Disassembly, Slew Motor Disassembly, Swivel Joint Maintenance, Reduction Gear Disassembly, Brake Valve Maintenance |
| Troubleshooting | 417-480 | Overall Machine, Traveling, Slewing, Boom, Arm |
| Other | 481-571 | Air Conditioner |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Rubber crawler track tension | 160 to 180 mm (6.3 to 7.1 in.) | p. 26 |
| Boom circuit relief valve pressure | 27.5 MPa (3988 PSI) | p. 29 |
| Arm circuit relief valve pressure | 27.5 MPa (3988 PSI) | p. 29 |
| Track roller standard dimension A | 120 mm | p. 174 |
| Track roller allowable value A | 116 mm | p. 174 |
| Segmented rubber crawler rubber pad nut torque | 245 N·m | p. 188 |
| Engine Oil Pan Capacity (Upper limit) | 10.2 L (10.8 US qt.) | p. 23 |
| Hydraulic Tank Capacity (Total amount of oil) | 140 L (37.0 US gal.) | p. 23 |
| Engine Cooling System Capacity | 14.0 L (14.8 US qt) | p. 23 |
| Travel Reduction Gear Oil Capacity | 1.1 L (1.16 US qt.) | p. 23 |
| Main Relief Valve Pressure Setting | 27.5 MPa (3990 psi) | p. 19 |
| Hydraulic Hose Tightening Torque (1/8 size, Union nut) | 9.8 +4.9/0 N·m | p. 38 |
