Part of the Hyundai Repair Manuals.
All 490 pages of this Hyundai R210NLC-9 Service Manual PDF focus on one machine: your R210NLC-9 hydraulic excavator, from the pump device to the turning joint. You get complete hydraulic schematics tracing the main and pilot circuits through single and combined operation, plus wiring diagrams with component locations, connector pinouts, and electrical component specs. A full troubleshooting section works through hydraulic, electrical, and mechatronics faults, and the disassembly chapter steps you through the pump, main control valve, swing device, travel motor, and boom, arm, and bucket cylinders. Set the main relief at 30 kgf/cm2, and check the return filter bypass relief at 1.5 kgf/cm2 before you condemn the pump. No more chasing pressure drops with borrowed numbers. Bookmarked and keyword-searchable; pull it up on your tablet beside the machine and start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-36 | Safety Hints, Specifications |
| Structure and Function | 37-116 | Pump Device, Main Control Valve, Swing Device, Travel Motor, Rcv Lever, Rcv Pedal |
| Hydraulic System | 117-148 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 149-200 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 201-257 | Outline, Mode Selection System, Automatic Deceleration System, Power Boost System, Travel Speed Control System, Automatic Warming Up System, Engine Overheat Prevention System |
| Maintenance Standard | 328-362 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 363-475 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 476-490 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| relief set pressure | 30 kgf/cm2 | p. 80 |
| Relief valve | 40kgf/cm2 | p. 122 |
| Bypass relief valve (in full-flow filter) | 1.5 kgf/cm2 | p. 120 |
| Check valve (1) | 3.0 kgf/cm2 | p. 120 |
| Check valve | 1.5 kgf/cm2 | p. 121 |
| Initial tightening torque | 78 ± 8 kgf·m | p. 360 |
| Hydraulic tank quantity | 165 L (43.6 U.S. gal) | p. 370 |
| Socket head bolt (Bucket cylinder, Item 23, M16) | 23 ± 2.0 kgf·m (166 ± 14.5 lbf·ft) | p. 452 |
| Socket head bolt (Bucket cylinder, Item 31, M10) | 5.4 ± 0.5 kgf·m (39.1 ± 3.6 lbf·ft) | p. 452 |
| Boom cylinder mounting bolt (Item 1, M10x1.5) | 3.2 ± 0.3 kgf·m | p. 484 |
| Operating weight | 22000 kg | p. 23 |
| Travel speed (low/high) | 3.4/5.3 km/hr | p. 23 |
