Bulldozer Komatsu D375A-6 D375A-8 D475A-5 Bulldozer Fan Motor Auxiliary Motor Cooling (Radiator) Fan Motor 708-7H-00680 708-7H-00670 708-7H-00612 The D375A-6 is a Komatsu mining-class large bulldozer that uses a hydraulically driven radiator cooling fan — the fan pump (piston pump) supplies oil, and the fan motor (hydraulic motor) drives the cooling fan. The fan speed is automatically and variably regulated based on coolant and hydraulic oil temperature, saving fuel, reducing