TM 9-2350-256-20
c. OPERATION
Clear all personnel from top and rear areas of vehicle before raising or lowering the boom.
Under no circumstances should any hydraulic hoses/lines be disconnected for maintenance
purposes unless the boom is in the fully forward position or blocked by boom safety stands.
To avoid possibility of injury to personnel, if the hoisting boom cannot be fully raised (roof of
building too low, etc.), the use of safety boom stands is mandatory. After maintenance is
performed and the boom is to be lowered to the stowed position, clear all personnel from the top
and rear area of the vehicle.
CAUTION
Always raise the hoisting boom assembly to the fully forward position unless it is not permissible
due to an obstruction.
Be sure AUXILIARY GENERATOR switch on slaving vehicle is in the OFF position.
Ensure APU emergency winch operation valve is in the normal operation mode on the inoperable
vehicle.
NOTE
The operation (RAISE/LOWER) of the hoisting boom assembly will be completed by using only the
controls in the inoperable vehicle, which is being hydraulically driven by the APU of the slaving
vehicle.
1
Start APU on slaving vehicle (refer to TM 9-2350-256-10).
2
Shift SYSTEM SELECTOR control lever to auxiliary position and operate hoisting boom controls in
inoperable vehicle (refer to TM 9-2350-256-10).
Change 1
3-14.9
