708-7w-00230 708-7w-00210 Hydraulic Fan Motor Assembly for Komatsu Hm400-3 Hm400-5 Articulated Dump Trucks

This hydraulic fan motor assembly is designed for use on Komatsu HM400-3 and HM400-5 series articulated dump trucks, providing reliable cooling system performance.

• 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

• Verify part numbers and machine serial number to confirm compatibility with Komatsu 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