Part of the Hyundai Repair Manuals.
Need the factory answer for your Hyundai R290LC-7? This 626-page Hyundai R290LC-7 service manual PDF covers the hydraulic excavator from safety hints all the way to final component mounting torques. Inside: complete hydraulic circuit schematics with main and pilot circuit routing, electrical wiring diagrams for both standard and Tier II machines, self-diagnostic error code charts, and a full disassembly and assembly section walking you through the pump device, main control valve, swing and travel drives. You get factory numbers, not forum guesses: set the main relief valve to 330 kgf/cm2 (4690 psi) and confirm each pump section flows 260 l/min at rated speed. Chasing an electrical gremlin with a multimeter and a prayer? Bookmarked chapters plus a live text layer let you jump straight to any spec by keyword. Download it, open it on the machine, start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-36 | Safety Hints, Specifications |
| Structure and Function | 37-141 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 142-174 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 175-245 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 246-300 | Outline, Mode Selection System, Automatic Deceleration System, Power Boost System |
| Maintenance Standard | 367-403 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 404-610 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 611-626 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main relief valve pressure | 330kgf/cm2 (4690psi)[360kgf/cm2 (5120psi)] | p. 34 |
| Maximum pressure | 330kgf/cm2 (4690psi)[360kgf/cm2 (5120psi)] | p. 32 |
| Capacity | 2 x 136.8cc/rev | p. 32 |
| Rated oil flow | 2 x 260 l/min (68.7U.S. gpm/ 57.2U.K. gpm) | p. 32 |
| Main relief valve setting pressure | 330kgf/cm2 | p. 151 |
| Bypass relief valve opening pressure | 1.5kgf/cm2 | p. 146 |
| Bypass check valve setting pressure | 3.0kgf/cm2 | p. 146 |
| Tightening torque (Overload relief valve) | 8~9 kgf·m (57.8~65.1 lbf·ft) | p. 443 |
| Overload relief valve torque | 10~12 kgf·m (72.3~86.8 lbf·ft) | p. 485 |
| Operating Weight | 28900 kg | p. 22 |
| Engine Rated Gross Horsepower | 195 Hp | p. 32 |
| Engine Oil Quantity | 18.9 L | p. 32 |
