TM 9-2350-267-10
AUXILIARY POWER UNIT (APU) - the APU uses a separate and independent engine to
drive (via a chain and sprocket arrangement) an electrical generator and primary hydraulic
pump.
APU ENGINE - the engine is a 2-cycle, 11.5-horsepower diesel engine. Ignition, fuel
supply switch and engine indicators are located on the APU control box in the cargo
compartment.
GENERATOR - when driven, the generator will supply enough power to run its own
electrical system and that of a supported vehicle, via slave receptacles and cable. This
slave Power may be used to charge dead batteries of a disabled vehicle, or to operate the
supported vehicle’s electrical system.
PRIMARY HYDRAULIC PUMP - the primary pump supplies hydraulic fluid to all hydraulic
circuits whenever the APU is functioning. The pump is of the rotary-gear type.
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