2-13. OPERATION OF AUXILIARY EQUIPMENT-Continued.
Main winch. Pay out cable to loosen load and/or inhaul cable under no-load conditions.
Hoist winch. Lower suspended load or raise cable under noload conditions.
This is not a normal function of the auxiliary hydraulic system.
In an EMERGENCY ONLY, if main engine fails during hoisting operations and you
have a load hanging from boom, auxiliary hydraulic system may be used to lower
load. This is to allow you to loosen cable and reel it in. Start auxiliary hydraulic
system (see para. 2-11c) and move HOIST operating lever SLOWLY to LOWER until
load rests on ground.
Spade-raise or lower. The spade can be raised from the stabilizing position by releasing the vehicle
brakes while raising it. If the spade is deeply implanted, the vehicle must be towed back while raising
Boom-raise or lower.
Starting instructions. See paragraph 2-10b for normal starting instructions. Instructions for starting APU in
extremely cold weather (32 to -25oF [0 to -32oC]) are found in paragraph 2-16b. Before starting APU, see
PMCS (see tab. 2-1) for checking oil level.
Charging batteries. To charge batteries, start APU and allow to run for 3 minutes. Turn on generator
switch and charge for 30 minutes. If there is not enough power to start main engine after charging, notify
Refuel and defuel.
General. The fuel transfer pump is used when fueling vehicle from drums or from another vehicle. It
is also used to transfer fuel from the M88A1 to another vehicle. Controls and fuel hose are located in
right stowage compartment on outside of vehicle.
Access door to APU can swing and injure personnel performing maintenance
checks and services, especially if spare roadwheel is mounted in place, unless
access door is properly secured by a strap. (Use stowage strap numbers in
paragraph E-7, items 3, 8, and 9. Stowage strap is routed through lower access
door ring handle and stowed roadwheel hub, and then tied to secure door in an