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{"title":"Cooling Radiator Fan Motor 708-7S-00352 708-7S-350 708-7S-00550 for Bulldozer","imgUrl":"https:\/\/img.chinax.com\/nimg\/16\/d7\/34c9353866805d16e2ba789276cf-200x200-1\/cooling_radiator_fan_motor_708_7s_00352_708_7s_350_708_7s_00550_for_bulldozer.jpg","attrs":{"Product Name":"Bulldozer Fan Motor","Packaging Details":"Wooden Case \/ Cartonwith Foam Protection, or as Required","Part No":"708-7S-00352 708-7S-350 708-7S-00550","Applicable Model":"D61-15 D65-15 D65-16 D85-15"}}
{"title":"Komatsu D375A-6 D375A-8 D475A-5 Bulldozer Fan Motor 708-7H-00680 708-7H-00670","imgUrl":"https:\/\/img.chinax.com\/nimg\/c0\/73\/c039a471077e95362ad9812a0c4b-200x200-1\/komatsu_d375a_6_d375a_8_d475a_5_bulldozer_fan_motor_708_7h_00680_708_7h_00670_708_7h_00612.jpg","attrs":{"Part No":"708-7H-00680 708-7H-00670 708-7H-00612","Price":"Negotiable","MOQ":"1 Set","Product Name":"Bulldozer Fan Motor"}}
{"title":"Bulldozer Fan Motor 708-7L-00060 708-7L-00070 for Komatsu D61-15 D65-15 D65-16","imgUrl":"https:\/\/img.chinax.com\/nimg\/b1\/93\/fad9f410611d1292eb3b53a7903e-200x200-1\/bulldozer_fan_motor_708_7l_00060_708_7l_00070_for_komatsu_d61_15_d65_15_d65_16_d85_15.jpg","attrs":{"Model Number":"D65 \uff0cD85","Packaging Details":"Wooden Case \/ Carton with Foam Protection, or as Required","Certification":"ISO90001","Condition":"New \/ Rebuilt"}}
{"title":"708-7W-00021 708-7W-00020 Cooling Fan Motor Bulldozer Komatsu D275 Fan Motor","imgUrl":"https:\/\/img.chinax.com\/nimg\/16\/de\/07ef9454b151505686f47a641e83-200x200-1\/708_7w_00021_708_7w_00020_cooling_fan_motor_bulldozer_komatsu_d275_fan_motor.jpg","attrs":{"Minimum Order Quantity":"1 set","Part No":"708-7W-00021\u3001708-7W-00020","Warranty":"6 Months","Price":"Negotiable"}}
{"title":"Komatsu HM400-3 HM400-5 Radiator Fan Motor 708-7P-00020 708-7P-00030 708-7W","imgUrl":"https:\/\/img.chinax.com\/nimg\/0c\/ff\/16dc388c44098678412de7bd1aa1-200x200-1\/komatsu_hm400_3_hm400_5_radiator_fan_motor_708_7p_00020_708_7p_00030_708_7w_00230.jpg","attrs":{"Place of Origin":"China","Model Number":"HM400-3 HM400-3R HM400-3M0","Supply Ability":"100pcs\/day","Payment Terms":"Western Union, T\/T, Assurance"}}
{"title":"Excavator Komatsu PC1250-8 Fan Motor 708-7S-00610 708-7S-00612","imgUrl":"https:\/\/img.chinax.com\/nimg\/2c\/89\/78395994bba4fb3a76ecc7aec948-200x200-1\/excavator_komatsu_pc1250_8_fan_motor_708_7s_00610_708_7s_00612.jpg","attrs":{"Packaging Details":"Wooden Case \/ Cartonwith Foam Protection, or as Required","Price":"Negotiable","Place of Origin":"China","Certification":"ISO90001"}}
{"title":"708-7w-00230 708-7w-00210 Hydraulic Fan Motor Assembly for Komatsu Hm400-3 Hm400","imgUrl":"https:\/\/img.chinax.com\/nimg\/af\/d8\/1bc39ca5f75a4104b58921ef282a-200x200-1\/708_7w_00230_708_7w_00210_hydraulic_fan_motor_assembly_for_komatsu_hm400_3_hm400_5_articulated_dump_trucks.jpg","attrs":{"Transportation Method":"DHL, UPS, FedEx, Sea Freight","Part No":"708-7W-00230","Certification":"ISO90001","Warranty":"6 Months"}}
Bulldozer Komatsu D61-15 D65-15 D65-16 D85-15 Bulldozer Fan Motor Auxiliary Motor Cooling (Radiator) Fan Motor
Part Numbers: 708-7S-00352, 708-7S-350, 708-7S-00550
The D65 (D65EX / D65PX / D65WX series) uses an electro-hydraulic static cooling fan system (HSS). The fan motor is the hydraulic motor within this system—driven by pressure oil supplied from the engine-mounted fan pump (gear pump), replacing the conventional mechanical belt drive. Its speed is electronically regulated to precisely control the cooling fan rotation.
Core Function
Drives the cooling fan to dissipate heat from the engine and hydraulic system. It automatically reduces speed at idle or low temperature to save fuel and reduce noise, and increases speed under high temperature or heavy load to ensure adequate cooling.
Common Faults & Troubleshooting
Fan not rotating / abnormal speed: First determine whether the fault is in the pump or the motor—measure the fan motor inlet pressure/flow. If pressure is normal but the fan does not turn, it indicates internal motor wear; if pressure or flow is insufficient, check the fan pump, filter and oil circuit.
Abnormal noise / squealing: Worn internal motor bearing, cavitation (air entrained in system), contaminated oil.
Unstable fan speed / jitter: Abnormal electronic control signal, seized motor displacement mechanism, air in oil circuit.
High oil temperature chain reaction: Severe motor internal leakage generates heat, which in turn accelerates wear.
Repair & Purchasing Recommendations
Light wear: Replace the oil seal + seal kit and clean the interior.
Severe scoring (cylinder block, valve plate, piston): Replace the rotating group parts or the complete motor assembly.
After reassembly, always fill the pump/motor with hydraulic oil before starting; running it dry will burn out the motor.
When ordering, confirm the specific D65 sub-model (-12 / -15 / -16) and the original old part number, as part numbers differ by generation.
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Trading Company,Manufacturer
Year Established:
2017
Total Annual:
$1 Million -US$5 Million
Employee Number:
80~100
Ecer Certification:
Verified Supplier
Guangzhou Kawo Construction Machinery Co., Ltd.
Company Profile
Professional Excavator Hydraulic Products Manufacturer & Service Provider
Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ... Guangzhou Kawo Construction Machinery Co., Ltd.
Company Profile
Professional Excavator Hydraulic Products Manufacturer & Service Provider
Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ...