Part of the Hyundai Repair Manuals.
Looking for the complete Hyundai R140W-9 service manual PDF? All 679 pages of this factory manual cover the R140W-9 Wheel Excavator, from the pump device to the work equipment cylinders. You get full hydraulic schematics with main and pilot circuit routing, wiring diagrams with connector pinouts, and a heavy troubleshooting section spanning hydraulic, electrical, and mechatronics faults, including the self-diagnostic system. Step-by-step teardown procedures walk you through the main pump, swing motor, travel motor, powershift transmission, steering valve, and both axles. Set the swing bearing upper mounting bolts to 41.3 kgf·m; rear engine mount bolts get 90 kgf·m, and the engine holds 24 liters of oil. Your excavator is down, and forum guesses won't get it running. Bookmarked with a full text layer, this PDF opens on laptop, tablet, or phone: find the spec, walk to the machine, fix it.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-34 | Safety Hints, Specifications |
| Structure and Function | 35-121 | Pump Device, Main Control Valve, Swing Device, Travel Motor, Rcv Lever, Accelerator Pedal, Brake Pedal, Transmission |
| Hydraulic System | 122-154 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 155-210 | Component Location, Electrical Circuit, Electrical Component Specification |
| Mechatronics System | 211-267 | Outline, Mode Selection System, Automatic Deceleration System |
| Troubleshooting | 268-348 | Before Troubleshooting, Hydraulic and Mechanical System, Electrical System, Mechatronics System |
| Maintenance Standard | 349-377 | Operational Performance Test, Major Components, Work Equipment |
| General Precautions and Tightening Torque | 378-408 | Removal Work, Installation Work, Tightening Torque Charts, Bolt Specifications |
| Pump Device | 409-421 | Main Pump Structure, Regulator Disassembly, Gear Pump Disassembly, Pump Assembly |
| Swing Device | 422-442 | Swing Motor Removal, Swing Motor Disassembly, Reduction Gear Disassembly, Swing Motor Assembly |
| Travel Motor | 443-466 | Travel Motor Removal, Motor Unit Structure, Control Unit Disassembly, Counter-Balance Valve |
| Transmission | 467-520 | Transmission Removal, Powershift Transmission Structure, Brake and Clutch Disassembly, Downshift Interlock |
| Steering Valve and Axles | 521-584 | Steering Valve Removal, Steering Cylinder Disassembly, Front Axle Removal, Rear Axle Removal |
| Work Equipment Cylinders | 585-663 | Bucket Cylinder Removal, Arm Cylinder Removal, Boom Cylinder Removal, Dozer Cylinder Removal |
| Component Mounting Torque | 664-679 | Introduction Guide, Engine System, Electric System, Power Train System, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Swing bearing upper mounting bolt | 41.3 ± 4.5 kgf·m | p. 382 |
| Engine mounting bolt (bracket-frame, FR) | 55 ± 3.5 kgf·m | p. 382 |
| Engine mounting bolt (bracket-frame, RR) | 90 ± 7.0 kgf·m | p. 382 |
| Operating weight | 13700 kg | p. 22 |
| Engine oil quantity | 24 L | p. 30 |
| Main pump maximum pressure | 350 kgf/cm2 | p. 30 |
| Swing motor braking torque | 25 kgf·m | p. 31 |
| Travel motor relief pressure | 360 kgf/cm2 | p. 31 |
