Part of the Hyundai Repair Manuals.
Wrenching on a Hyundai R250LC-9? This 531-page Hyundai R250LC-9, R250NLC-9 Shop Manual PDF covers both hydraulic excavators plus the High Walker variant, cover to cover. Inside: full electrical wiring circuits with connector pinouts, hydraulic schematics for the main and pilot circuits, and page after page of disassembly and assembly procedures for the pump device, main control valve, swing device, travel device, and turning joint. You also get a self-diagnostic section that decodes mechatronics error codes, plus operational performance tests to baseline your machine before and after repairs. Set the pilot relief valve at 40 kgf/cm2 and check pump EPPR current at 280 ± 30 mA in P mode. Quit chasing electrical gremlins with a test light and guesswork. Bookmarked with a full text layer; search any spec, jump straight to the section, and get back to digging.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 12-46 | Safety Hints, Specifications |
| Structure and Function | 47-127 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 128-159 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 160-211 | Component Location, Electrical Circuit, Electrical Component Specification |
| Mechatronics System | 212-268 | Outline, Mode Selection System |
| Maintenance Standard | 339-373 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 374-515 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 516-531 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bypass relief valve setting pressure | 1.5 kgf/cm2 | p. 131 |
| Check valve (1) setting pressure | 4.5 kgf/cm2 | p. 131 |
| Pump EPPR valve electric current (Standard Stage 1.0, P mode) | 280 ± 30 mA | p. 240 |
| Pump EPPR valve electric current (Standard Stage 1.0, S mode) | 320 ± 30 mA | p. 240 |
| Play between piston (1) & shoe caulking section (3) | 0-0.1 mm | p. 360 |
| Thickness of shoe (t) | 4.9 mm | p. 43 |
| Track shoe mounting bolt, nut | 78 ± 8.0 kgf·m | p. 378 |
| Swing bearing upper part mounting bolt | 57.8 ± 6.4 kgf·m | p. 378 |
| Swing bearing lower part mounting bolt | 57.8 ± 6.4 kgf·m | p. 378 |
| Bucket cylinder Piston torque | 150±15 kgf·m | p. 492 |
| Boom cylinder Piston torque | 150±15 kgf·m | p. 492 |
| Operating weight | 25200 kg | p. 23 |
