Part of the Hyundai Repair Manuals.
Looking for a Hyundai R180LC-7A, R180NLC-7A service manual PDF you can actually trust? This 490-page factory service manual covers both hydraulic excavator variants, standard and narrow track, from safety hints to final component mounting torques. Inside: full hydraulic schematics tracing the main and pilot circuits through single and combined operation, complete wiring diagrams with connector pinouts, and a thick troubleshooting section for hydraulic, electrical, and mechatronics faults. Step-by-step teardown procedures walk you through the pump, main control valve, swing and travel devices, turning joint, and cylinders. Set pilot relief at 35 kgf/cm2, hold boom, arm, and bucket relief at 330 kgf/cm2, and replace the swing bearing once thrust clearance passes 0.8 mm. Your machine is down; get the factory numbers, not forum guesses. Bookmarked with a live text layer, so you can jump to any section or search any spec right from the tablet in your cab.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-38 | Safety Hints, Specifications |
| Structure and Function | 39-115 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 116-147 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 148-199 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 200-233 | Outline, Mode Selection System, Automatic Deceleration System, Power Boost System, Travel Speed Control System, Automatic Warming Up Function, Engine Overheat Prevention Function |
| Maintenance Standard | 284-320 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 321-476 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 477-490 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Bypass relief valve setting pressure | 1.5kgf/cm2 (21psi) | p. 119 |
| Bypass check valve (1) setting pressure | 3.0kgf/cm2 (43psi) | p. 119 |
| Maximum allowable value for thrust bearing clearance | 0.8mm | p. 308 |
| Standard dimension for axial clearance between coupling gear and cover | 0.3 to 0.6mm | p. 308 |
| Carrier roller mounting bolt, nut | 54.7 ± 6.0 kgf·m | p. 325 |
| Track roller mounting bolt | 54.7 ± 6.0 kgf·m | p. 325 |
| Swing bearing upper mounting bolt | 57.8 ± 6.4 kgf·m | p. 325 |
| Swing bearing lower mounting bolt | 57.8 ± 6.4 kgf·m | p. 325 |
| R180LC-7A | ||
| Standard relief pressure for Boom, Arm, Bucket | 330(360) kgf/cm2 | p. 304 |
| Maximum allowable relief pressure for Boom, Arm, Bucket | 380 kgf/cm2 | p. 304 |
| Operating weight, R180LC-7A | 18200 kg | p. 21 |
| R180NLC-7A | ||
| Operating weight, R180NLC-7A | 18110 kg | p. 22 |
