TM 9--2350--292--10
0053 00--1
OPERATE AUXILIARY POWER UNIT.
0053 00
THIS WORK PACKAGE COVERS:
Starting APU, Stopping APU, Charging Vehicle Batteries
INITIAL SETUP:
Personnel Required
Three
References
WP 0101 00
WP 0083 00
WP 0020 00
WP 0076 00
WP 0034 00
The auxiliary power unit (APU) is used to charge vehicle batteries, power impact wrench or refuel/defuel pump,
and, in an emergency, it can raise/lower boom or spade, retrieve main/hoist/auxiliary winch cables, or lower hoisted
load to ground.
STARTING APU
NOTE
To start APU in extremely cold weather (0° to --25° F (--17° to --31°C)) refer to (WP 0076 00).
If rear fuel tanks are too low for APU operation, open forward tank valve (WP 0020 00).
Close valve when you are finished.
When operating APU on side slopes, ensure vehicle has at least a quarter tank of fuel and
close fuel control valve to the right rear fuel tank (WP 0020 00). Open valve when you are
finished.
To operate hydraulics system, SYSTEM SELECTOR lever must be in MAIN position. To
operate REFUEL/DEFUEL system or impact wrench, SYSTEM SELECTOR must be in
REFUEL position.
1. Check APU chaincase and crankcase oil levels (Table 6, WP 0101 00).
2. Turn OFF all radio and electrical switches.
3. Set SYSTEM SELECTOR control lever (1) to MAIN.
1