Part of the Hyundai Repair Manuals.
Looking for the Hyundai R300LC-7 service manual PDF that dealers actually use? All 468 pages cover the R300LC-7 crawler excavator from pump device teardown to final track adjustment. You get high-quality hydraulic circuit schematics with pilot and main circuit routing, full electrical wiring diagrams with connector pinouts, and a thick troubleshooting section that walks the hydraulic, electrical, and mechatronics systems fault by fault. Disassembly and assembly procedures cover the main control valve, swing device, travel device, and turning joint, each with tightening torques. Set the pilot relief valve at 35 kgf/cm2 and swap the fuel filter element every 500 hours, straight from the maintenance standard tables. No more chasing wiring faults with a multimeter and a prayer. Bookmarked, text-searchable, and it opens on any device; walk it right out to your machine.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-38 | Safety Hints, Specifications |
| Structure and Function | 39-95 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 96-127 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 128-173 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 174-211 | Outline, Mode Selection System, Engine Control System, Monitoring System |
| Maintenance Standard | 268-302 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 303-453 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 454-468 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| secondary pressure | 5 to 20.5 kgf/cm2 | p. 84 |
| Bypass relief valve opening pressure | 1.5kgf/cm2 | p. 99 |
| Drain oil pressure limit | 1.5kgf/cm2 | p. 100 |
| Pilot relief valve setting pressure | 35kgf/cm2 | p. 101 |
| Fuel filter element replacement interval | 500hr | p. 204 |
| Current | 15A | p. 213 |
| Play between piston(1) & shoe caulking section(3) | 0-0.1 mm | p. 289 |
| Engine mounting bolt, nut torque | 48 ± 2.0 kgf·m | p. 308 |
| Swing bearing upper part mounting bolt torque | 97.8 ± 10 kgf·m | p. 308 |
| Tightening torque for M10x1.5 bolt (Item 2) | 4.4 ± 0.9 kgf·m (31.8 ± 6.5 lbf·ft) | p. 456 |
| Operating weight | 29600 kg | p. 21 |
| Engine rated gross horse power | 217 Hp | p. 34 |
