Brand: KOMATSU
Category: Excavator
Manual Type:
Language:
Manual for PC27R-8 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 12:49 a.m.
Warranty Summary
No warranty information is provided in this operation and maintenance manual.
Basic Operation Summary:
- Starting the Engine: Follow safety checks, ensure no one is near, and use the ignition switch. Warm up the engine before operating.
- Moving the Machine: Position bucket 40-50cm off ground, use travel levers for forward/reverse, and pedal for speed increase.
- Steering: Use individual track levers for turning. Avoid abrupt changes in direction and counter-rotations at high speed.
- Working on Slopes: Keep bucket low, avoid traversing slopes obliquely, and never exceed 30° inclination.
- Parking: Park on level ground, lower equipment, engage safety locks, stop engine, and remove ignition key.
Refer to the manual for detailed instructions and safety precautions for each operation.
Troubleshooting and error codes
| TROUBLE | CAUSE | REMEDY |
|---|---|---|
| Lights do not work satisfactorily even with engine running at high speed | Faulty cables. Faulty fan belt tension. |
(•) Check and repair any loose terminal and connection. Adjust fan tension (see “EVERY 250 HOURS”). |
| Lights come on intermittently with engine running | Faulty fan belt tension. | Adjust fan tension (see “EVERY 250 HOURS”). |
| Alternator charge warning light does not go out with engine running and increasing speed | Faulty alternator. Faulty cables. |
(•) Change. (•) Check and repair. |
| Alternator emits an abnormal noise | Faulty alternator. | (•) Change. |
| Starter does not turn with key in START position | Faulty cables. Battery charge insufficient. Faulty main fuse. |
(•) Check and repair. Charge battery. Change. |
| Starter pinion engages and then disengages | Battery charge insufficient. | Charge battery. |
| Starter makes engine run slowly | Battery charge insufficient. Faulty starter. |
Charge battery. (•) Change. |
| Starter disengages before engine has started | Faulty cables. Battery charge insufficient. |
(•) Check and repair. Charge battery. |
| Engine oil pressure warning light does not come on when engine is stopped (ignition key in position « ») | Faulty bulb. Faulty pressure sensor. |
(•) Change. (•) Change. |
| Alternator charge warning light does not come on when engine is stopped (ignition key in position « ») | Faulty bulb. Faulty cables. |
(•) Change. (•) Check and repair. |
Troubleshooting and error codes
| TROUBLE | CAUSE | REMEDY |
|---|---|---|
| Lights do not work satisfactorily even with engine running at high speed | Faulty cables. Faulty fan belt tension. |
(•) Check and repair any loose terminal and connection. Adjust fan tension (see “EVERY 250 HOURS”). |
| Lights come on intermittently with engine running | Faulty fan belt tension. | Adjust fan tension (see “EVERY 250 HOURS”). |
| Alternator charge warning light does not go out with engine running and increasing speed | Faulty alternator. Faulty cables. |
(•) Change. (•) Check and repair. |
| Alternator emits an abnormal noise | Faulty alternator. | (•) Change. |
| Starter does not turn with key in START position | Faulty cables. Battery charge insufficient. Faulty main fuse. |
(•) Check and repair. Charge battery. Change. |
| Starter pinion engages and then disengages | Battery charge insufficient. | Charge battery. |
| Starter makes engine run slowly | Battery charge insufficient. Faulty starter. |
Charge battery. (•) Change. |
| Starter disengages before engine has started | Faulty cables. Battery charge insufficient. |
(•) Check and repair. Charge battery. |
| Engine oil pressure warning light does not come on when engine is stopped (ignition key in position « ») | Faulty bulb. Faulty pressure sensor. |
(•) Change. (•) Change. |
| Alternator charge warning light does not come on when engine is stopped (ignition key in position « ») | Faulty bulb. Faulty cables. |
(•) Change. (•) Check and repair. |