TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 l-24. STEERING CONTROL SYSTEM OPERATION Major components of the steering system are: _ 0 A 0 B 0 C 0 D 0 E 0 F HYDRAULIC CONTROL VALVE - Directs hydraulic fluid to provide required pressure to actuate and deactuate fan clutch as required by engine temperature. Hydraulic pressure supplied by power steering pump. HYDRO-BOOSTER - Converts hydraulic power from the steering pump to mechanical power to the master cylinder, providing power assist during braking. SERPENTINE BELT - Transmits mechanical driving power from crankshaft drive pulley to steering pump pulley which drives the steering pump- POWER STEERING COOLER - Directs power steering fluid through a series of fins or bafnes so outside air can dissipate excess heat before the fluid is recirculated through the steering system. OIL RESERVOIR AND STEERING PUMP - Combined in one unit, the reservoir serves as an oil filling point and the pump supplies the oil under pressure throughout the steering system. FAN CLUTCH - Hydraulically-actuated by pressure from hydraulic control valve to control operation of fan. Hydraulic pressure is supplied by the power steering pump. 1-27