Part of the Hyundai Repair Manuals.
Wrenching on a Hyundai R145 series? This 517-page Hyundai R145CR-9, R145CRD-9, R145LCR-9 service manual PDF covers all three crawler excavator variants, from the pump device and main control valve down to the undercarriage. Inside: full electrical circuit diagrams with connector pinouts, hydraulic schematics for the main and pilot circuits, and troubleshooting trees for the hydraulic, electrical, and mechatronics systems, self-diagnostic codes included. You also get operational performance test standards, exploded assembly views, and step-by-step disassembly procedures for the swing device, travel motor, and turning joint. Torque the track roller mounting bolts to 29.6 kgf·m (214 lbf·ft) and the main pump socket bolts to 22 kgf·m (159 lbf·ft), straight from the factory tables. Your excavator is down; forum guesses won't lift it. Bookmarked and text-searchable, the PDF opens on your phone right at the machine. Download it and get back to digging.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-38 | Safety Hints, Specifications |
| Structure and Function | 39-115 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 116-148 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 149-199 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 200-249 | Outline, Mode Selection System, Automatic Deceleration System, Monitoring System |
| Troubleshooting | 250-319 | Before Troubleshooting, Hydraulic and Mechanical System, Electrical System, Mechatronics System |
| Maintenance Standard | 320-354 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 355-502 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 503-517 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Bypass relief valve opening pressure | 1.5 kgf/cm2 | p. 119 |
| Battery | 12V x 80Ah (2EA) | p. 171 |
| Play between piston (1) & shoe caulking section (3) | 0-0.1 mm | p. 341 |
| Track roller mounting bolt | 29.6 ± 3.2 kgf·m (214 ± 23.1 lbf·ft) | p. 359 |
| Main pump mounting socket bolt | 22 ± 1.0 kgf·m (159 ± 7.2 lbf·ft) | p. 359 |
| Pipe and hose (flare type) 1/4" thread | 4 kgf·m (28.9 lbf·ft) | p. 361 |
| Pipe and hose (flare type) 3/8" thread | 5 kgf·m (36.2 lbf·ft) | p. 361 |
| Tightening torque for track roller bolts (Item 7) | 29.7±4.4 kgf·m (215±31.8 lbf·ft) | p. 512 |
| Tightening torque for main pump mounting bolts (Item 10) | 22±1.0 kgf·m (159±7.2 lbf·ft) | p. 509 |
| Travel Speed (low/high) | 3.2/5.5 km/hr | p. 23 |
| R145CR-9 | ||
| Operating Weight, R145CR-9 | 14600 kg | p. 23 |
| R145CRD-9 | ||
| Operating Weight, R145CRD-9 | 15400 kg | p. 24 |
