Part of the Hyundai Repair Manuals.
Need the factory shop manual PDF for your Hyundai R290LC-7A or R290NLC-7A crawler excavator? All 510 pages cover the standard machines plus the Long Reach and High Walker variants. Inside: full hydraulic circuit schematics tracing main and pilot lines, complete electrical wiring diagrams with connector pinouts, and a self-diagnostic section that decodes every fault the mechatronics system throws. You also get step-by-step disassembly and assembly for the pump device, main control valve, swing and travel drives, backed by page after page of component mounting torque tables. Check the bypass relief valve at 1.5 kgf/cm2 (21 psi) and confirm the hydraulic oil temperature sensor reads 130 to 150 ohms before you condemn a harness. No more chasing wiring faults with a multimeter and a prayer. Bookmarked with a full text layer; search any spec, jump to any section, get back to digging.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-48 | Safety Hints, Specifications |
| Structure and Function | 49-125 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 126-157 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 158-203 | Component Location, Electrical Circuit, Electrical Component Specification |
| Mechatronics System | 204-258 | Outline, Mode Selection System, Automatic Deceleration System |
| Troubleshooting | 259-308 | Before Troubleshooting, Hydraulic and Mechanical System, Electrical System, Mechatronics System |
| Maintenance Standard | 309-343 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 344-494 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 495-510 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Bypass relief valve opening differential pressure | 1.5kgf/cm2 (21psi) | p. 129 |
| Drain oil pressure limit | 1.5kgf/cm2 (21psi) | p. 130 |
| Hydraulic oil temperature sensor resistance | 130-150 Ω | p. 289 |
| Main relief valve, port relief valve & negative control relief valve - O-rings, back up rings and seals | 100% replacement | p. 331 |
| Balance plate - Worn less than | 0.03mm | p. 331 |
| Swing motor mounting bolt torque | 58.4 ± 6.4 kgf·m | p. 344 |
| Swing bearing upper part mounting bolt torque | 97.8 ± 10 kgf·m | p. 344 |
| Overload relief valve tightening torque | 8~9 kgf·m (57.8~65.1 lbf·ft) | p. 383 |
| Socket head bolt (Bucket cylinder, Item 22, M18) torque | 32.0±3.0 kgf·m (232±21.7 lbf·ft) | p. 471 |
| Socket head bolt (Bucket cylinder, Item 31, M12) torque | 9.4±1.0 kgf·m (68.0±7.2 lbf·ft) | p. 471 |
| R290LC-7A | ||
| Operating Weight, R290LC-7A | 29300 kg | p. 21 |
| R290NLC-7A | ||
| Operating Weight, R290NLC-7A | 29100 kg | p. 22 |
