Part of the Hyundai Repair Manuals.
Every one of the 467 pages in this Hyundai R800LC-7A Service Manual PDF is aimed at one machine: Hyundai's R800LC-7A crawler excavator, from the pump device to the travel motors. You get full hydraulic schematics for the main and pilot circuits, complete electrical wiring diagrams with connector pinouts, and a mechatronics section that turns self-diagnostic error codes into plain answers. A thick troubleshooting section walks you through hydraulic, electrical, and mechatronics faults, while the disassembly chapters carry tightening torques for every major component you'll pull apart. Set the bypass relief valve to crack at 1.5 kgf/cm2, and hold piston-to-shoe play inside 0 to 0.1 mm when you rebuild the pump. An 80-ton excavator parked in the dirt bleeds money by the hour. Bookmarked with a real text layer: search any spec, jump straight to your section, fix the machine.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-38 | Safety Hints, Specifications |
| Structure and Function | 39-125 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 126-152 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 153-202 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 203-242 | Outline, Mode Selection System, Self-Diagnostic System |
| Maintenance Standard | 293-330 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 331-447 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 448-467 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery | 4 x 12V x 200Ah | p. 35 |
| Bypass relief valve opening pressure | 1.5kgf/cm2 | p. 130 |
| Bypass check valve(1) setting pressure | 5.0kgf/cm2 | p. 130 |
| Battery Voltage | 24V | p. 159 |
| Play between piston(1) & shoe caulking section(3) | 0-0.1mm | p. 314 |
| Track roller clearance between shaft and bushing | 0.28 to 0.5 mm | p. 325 |
| Track roller side clearance of roller | 0.34 to 1.678 mm | p. 325 |
| Idler clearance between shaft and bushing | 0.35 to 0.43 mm | p. 327 |
| Idler side clearance of idler | 0.4 to 1.4 mm | p. 327 |
| Turning joint sliding surface with sealing sections plating wear limit | 0.1 mm | p. 323 |
| Swing bearing upper part mounting bolt | 175 ± 20 kgf·m | p. 336 |
| Swing bearing lower part mounting bolt | 175 ± 20 kgf·m | p. 336 |
