OPERATE AUXILIARY POWER UNIT.
THIS WORK PACKAGE COVERS:
Starting APU, Stopping APU, Charging Vehicle Batteries
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.
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
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
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.