Excavator Komatsu PC1250-8 Fan Motor – Part Nos. 708-7S-00610 708-7S-00612
Common Faults
- Insufficient output torque of fan motor, low fan speed and engine overheating
- Abnormal noise during fan motor operation with housing vibration
- Oil leakage at motor shaft end, damaged oil seals and gaskets
- Wear of internal plungers and valve plate, severe overheating of motor
- Unstable motor pressure, fluctuating fan speed
- Motor seizure, fan stops rotating and cooling system fails
Purchasing Recommendations
- Verify part numbers and machine serial number to confirm compatibility with Komatsu PC1250-8 hydraulic excavator
- Prioritize OEM parts or high-quality remanufactured parts; be cautious of low-cost generic spare parts
- Inspect motor housing for cracks, check integrity of port threads and output shaft before acceptance
- Confirm the fan motor assembly comes with a complete seal kit for easy installation and replacement
- Request warranty from supplier and retain factory inspection report
- Check hydraulic oil condition and clean hydraulic circuit during motor replacement to prevent internal wear caused by contaminants