TM-9-2350-256-34

TM-9-2350-256-34 - Page 59 of 584

TM 9-2350-256-34

0003 00

Four-Way Selector Valve

A three-position, four-way selector valve (Figure 19) is installed in the auxiliary hydraulic system to control the rotation of the

refuel pump and motor. The four-way selector valve is mounted on the right rear area above the track in the engine compartment.

Figure 19.

Four-Way Selector Valve—Installed View.

AUXILIARY POWER UNIT (APU)

The APU (Figure 20) consists of an air cooled diesel engine with a chain case, generator (which is also used as a starter), and

hydraulic pump mounted to it. The chain case covers three sprockets and a drive chain, With a support and mounts, the engine,

generator/starter and pump form a compact unit which fits into the right forward corner of the vehicle engine compartment. The

generator electrical system is designed to supply a maximum of approximately 150 amperes of current at approximately 28 volts

dc to charge the vehicle batteries. The pump supplies pressure at 2000 ± 50 psi (13,790 ± 345 kPa) to the auxiliary hydraulic

system.

0003 00-19