Part of the Hyundai Repair Manuals.
Hunting for a Hyundai R290LC-9, R290NLC-9 service manual PDF that actually matches your machine? This 643-page factory manual covers the standard excavators plus the Long Reach and High Walker variants. You get hydraulic schematics tracing main and pilot circuits through single and combined operations, electrical circuit diagrams with connector pinouts, and a self-diagnostic section that turns cluster fault codes into real answers. The back half is pure teardown: pump device, main control valve, swing and travel units, turning joint, cylinders, and undercarriage, each with its tightening torques. Set the main pumps to relieve at 350 kgf/cm2 (4980 psi), and if the swing feels loose, verify brake holding torque at 70 kgf·m (506 lbf·ft). A dead excavator doesn't wait for parts-counter opinions. Bookmarked and keyword-searchable; pull it up on your phone next to the machine and get back to digging.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 12-52 | Safety Hints, Specifications |
| Structure and Function | 53-187 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 188-219 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 220-271 | Component Location, Electrical Circuit, Electrical Component Specification |
| Mechatronics System | 272-328 | Outline, Mode Selection System, Automatic Deceleration System |
| Maintenance Standard | 399-436 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 437-627 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 628-643 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Braking torque | 70 kgf·m (506 lbf·ft) | p. 48 |
| Main pump maximum pressure | 350 kgf/cm² (4980 psi) | p. 47 |
| Main pump rated oil flow | 2 × 252 L/min (66.6 U.S. gpm / 55.4 U.K. gpm) | p. 47 |
| Tightening torque for G1/4 ports (includes orifice ports) | 3.5~3.9 kgf·m (25.3~28.2 lbf·ft) | p. 107 |
| Battery relay rated load | 24V 100A (continuity) 1000A (30seconds) | p. 241 |
| Swing motor mounting bolt | 58.4 ± 6.4 kgf·m (422 ± 46.3 lbf·ft) | p. 441 |
| 1" flare type pipe and hose torque | 21 kgf·m (151.9 lbf·ft) | p. 443 |
| Engine oil quantity | 24 L | p. 47 |
| R290LC-9 | ||
| Operating weight, R290LC-9 | 29300 kg | p. 23 |
| R290NLC-9 | ||
| Operating weight, R290NLC-9 | 29100 kg | p. 24 |
| R290LC-9 LONG REACH | ||
| Operating weight, R290LC-9 LONG REACH | 32690 kg | p. 25 |
| R290LC-9 HIGH WALKER | ||
| Operating weight, R290LC-9 HIGH WALKER | 32140 kg | p. 26 |
