Part of the Hyundai Repair Manuals.
Wrenching on a Hyundai R16-9 mini excavator? This 402-page Hyundai R16-9 service manual PDF is the full factory book: structure and function, hydraulic circuits, electrical system, troubleshooting, maintenance standards, and complete disassembly and assembly for the whole machine. You get hydraulic schematics tracing the main and pilot circuits through every single and combined operation, plus wiring diagrams with component locations and connector views for chasing electrical gremlins. Step-by-step teardown procedures walk you through the pump device, main control valve, swing and travel motors, RCV levers, cylinders, and undercarriage, backed by mounting torque tables for every system. Set your main relief at 210 kgf/cm2 (2990 psi), overload relief at 230 kgf/cm2 (3270 psi), and replace the pump shaft once wear hits 0.025 mm. No more guessing pressures off a forum thread. Bookmarked and keyword-searchable; pull it up on your phone right next to the machine.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-31 | Safety Hints, Specifications |
| Structure and Function | 32-106 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 107-136 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 137-179 | Component Location, Monitoring System, Electrical Circuit |
| Troubleshooting | 180-216 | Before Troubleshooting, Hydraulic and Mechanical System |
| Maintenance Standard | 217-253 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 254-391 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 392-402 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main relief valve pressure | 210 kgf/cm2 (2990 psi) | p. 30 |
| Overload relief valve pressure | 230 kgf/cm2 (3270 psi) | p. 30 |
| Shaft (3) Worn depth | 0.025 mm or more | p. 237 |
| Valve plate (5) Worn depth | 0.020 mm or more | p. 237 |
| Engine mounting bolt (engine-bracket) | 7.4 ± 1.5 kgf·m | p. 259 |
| Engine mounting bolt (bracket-frame) | 12.3 ± 1.5 kgf·m | p. 259 |
| Main pump mounting bolt | 10 ± 1.0 kgf·m | p. 259 |
| Coupling mounting bolt | 5.15 ± 0.25 kgf·m | p. 259 |
| Hydraulic tank quantity | 20 L | p. 261 |
| Plug tightening torque | 3±0.3 kgf·m (21.7±2.17 lbf·ft) | p. 307 |
| Operating weight (canopy) | 1650 kg | p. 21 |
| Engine oil quantity | 4.2 L | p. 28 |
