Part of the Hyundai Repair Manuals.
Wrenching on a Hyundai R170W-3? This Hyundai R170W-3 service manual PDF packs 684 pages of factory procedures for the wheel excavator, from the main pump to the outrigger cylinders. You get full hydraulic circuit schematics with pilot and main circuit routing, complete electrical wiring diagrams with component locations, and a deep troubleshooting section covering hydraulic and electrical faults through the Hyper Dat diagnostic system. Disassembly and assembly steps walk you through the main pump, control valve, swing motor, reduction gear, steering valve, front and rear axles, and every work equipment cylinder. The bypass relief valve opens at 1.5 kg/cm2, and the electrical side runs 12V x 120Ah batteries with a Delco Remy 28MT starter. Your excavator is down. Get factory numbers, not forum guesses. Bookmarked with a full text layer; type a spec, jump straight to it, and get back to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-44 | Safety, Specification |
| Structure and Function | 45-124 | Pump Device, Main Control Valve, Swing Device, Travel Motor |
| Hydraulic System | 125-155 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 156-216 | Component Location, Electrical Circuit, Monitoring System |
| Mechatronics System | 217-248 | Mode Selection System, Engine Control System |
| Troubleshooting | 249-326 | Before Troubleshooting, Hydraulic and Mechanical System, Electrical System by Hyper Dat |
| Maintenance Standard | 327-355 | Operational Performance Test, Work Equipment |
| General Precautions and Installation Work | 356-361 | Removal Work, Installation Work, Cork Dimensions, Tightening Torque, Pipe and Hose Fittings |
| Pump Device | 362-387 | Removal and Install, Main Pump Structure, Main Pump Disassembly, Main Pump Assembly, Pressure Setting |
| Main Control Valve | 388-403 | Removal and Install, Main Control Valve Structure, Plunger Disassembly, Main Relief Assembly, Arm Regeneration Valve |
| Swing Device | 404-420 | Swing Motor Removal, Swing Motor Structure, Swing Motor Disassembly, Swing Motor Assembly, Swing Parking Brake |
| Reduction Gear | 421-442 | Reduction Gear Removal, Reduction Gear Disassembly, Reduction Gear Assembly, Planetary Carrier, Final Drive |
| Steering Valve and Axle | 443-659 | Steering Valve Disassembly, Steering Valve Assembly, Front Axle Removal, Rear Axle Removal, Differential Disassembly, Final Drive Disassembly |
| Work Equipment Cylinders | 660-684 | Bucket Cylinder, Arm Cylinder, Boom Cylinder, Dozer Cylinder, Outrigger Cylinder, Cylinder Disassembly and Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bypass relief valve opening pressure | 1.5kg/cm2 | p. 129 |
| Return filter bypass relief valve opening pressure | 1.5kg/cm2 | p. 128 |
| Drain line check valve opening pressure | 1.5kg/cm2 | p. 129 |
| Battery | 12V x 120Ah | p. 188 |
| Starter | Delco Remy 28MT 24V | p. 195 |
| Main control valve section socket bolt torque | 10kgf\u00b7m (72.3lbf\u00b7ft) | p. 391 |
| Socket head bolt (125) torque | 3.0 \u00b1 0.3 kgf\u00b7m (21.7 \u00b1 2.2 lbf\u00b7ft) | p. 456 |
| Dozer cylinder weight | 62kg(140lb) | p. 667 |
| Engine Oil Quantity | 11L | p. 40 |
| Main Pump Rated Oil Flow | 2 x 165 L/min | p. 40 |
| Main Relief Valve Pressure (Power Boost) | 350 kg/cm2 | p. 41 |
| Swing Motor Relief Pressure | 240 kg/cm2 | p. 41 |
