Komatsu shop manual SEBM021P0304 strips the PC180-3 series hydraulic excavator down system by system over 502 pages, covering six variants from the PC180LC-3 and PC180LLC-3 to the PC180NLC-3K. Hydraulics claim most of the book: the circuit diagram traces oil from the main pump, servo and TVC valves into the L.H. 6-spool and R.H. 5-spool control valves, and your boom, arm and bucket cylinders each get teardown and maintenance standards. Electrical wiring diagrams for the monitor system, plus final drive, travel motor, swing machinery and undercarriage rebuilds (idler, recoil spring, track rollers), round out the PDF. Set track tension to 60 to 100 mm of clearance, and warm the oil to 45 to 55°C before you fit a 600 kg/cm² gauge to the main relief. A slow arm means two valve banks to suspect. With bookmarks and a text layer, the manual rides in your service truck and searches by keyword beside the machine.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Engine | 11-66 | Structure and Function, Testing and Adjusting, Disassembly and Assembly |
| Power Train | 67-116 | Center Swivel Joint, Travel Motor, Final Drive, Swing Machinery |
| Undercarriage | 117-124 | Idler, Recoil Spring Assembly, Track Roller Assembly |
| Hydraulic System Outline and Tank | 125-130 | Work Equipment Piping, Hydraulic Circuit Diagram, Hydraulic Tank, Charging Pump |
| Hydraulic Pump Assembly | 131-171 | Main Pump, Servo Valve, TVC Valve, CO-NC Valve, Piston Pump |
| Control Valves | 172-212 | L.H. 6-Spool Control Valve, R.H. 5-Spool Control Valve, Solenoid Valve |
| Hydraulic Cylinders | 213-274 | Boom Cylinder, Arm Cylinder, Bucket Cylinder, Cushion Cylinder |
| Work Equipment Hydraulic Control | 275-328 | Work Equipment Piping, Boom Control, Arm Control, Bucket Control, PPC Valve, Accumulator |
| Testing and Adjusting Hydraulic Control | 329-402 | Relief Valve, Travel Motor Performance, Center Swivel Joint, Piston Pump Delivery, Troubleshooting |
| Hydraulic System Maintenance Standards | 403-414 | Control Valve, PPC Valve, Charging Pump, Work Equipment, Hydraulic Cylinder |
| Electrical System | 415-502 | Electric Vehicle Monitor System, Testing and Adjusting |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Machinery case oil capacity | Approx. 7 L | p. 106 |
| Track tension clearance | 60 - 100 mm | p. 121 |
| Hydraulic cylinder piston rod and bushing clearance (Boom cylinder) | 0.177 - 0.465 mm | p. 414 |
| Hydraulic cylinder piston rod and bushing clearance (Arm cylinder) | 0.161 - 0.445 mm | p. 414 |
| Oil temperature for relief pressure measurement | 45 - 55°C | p. 339 |
| Pressure gauge for main relief pressure measurement | 600 kg/cm² | p. 339 |
| Control lever at neutral pressure | 15.5 ± 1 kg/cm² | p. 384 |
| Control lever at neutral pressure (TVC valve) | Min. 18 kg/cm² | p. 386 |
| Engine Oil Pan Capacity (Specified) | 12.5L | p. 9 |
| Engine Oil Pan Capacity (Refill) | 10.5L | p. 9 |
| Hydraulic Tank Capacity (Specified) | 195L | p. 9 |
| Hydraulic Tank Capacity (Refill) | 134L | p. 9 |
