Start engine (TM 10-3930-673-10). Lower
outer boom (1) until pivot pins (13) are just
above cab. Stop engine.
Outer boom weighs 1952 lbs (885.41 kg).
Attach suitable lifting device prior to
removal or installation to prevent possible
injury to personnel.
Support outer boom (1) with hoist and slings
or other suitable lifting device positioned at
front of boom.
Place wood block across vehicle deck behind
cab to support boom hoist cylinders (14)
when cylinders are lowered.
Remove screw (15) and locknut (16) from
pivot pin (13). Discard locknut.
Support boom hoist cylinder (14). Remove pivot pin (13) from outer boom (1) and boom hoist cylinder.
Release hydraulic joystick immediately after boom hoist cylinder to be removed has fully retracted. If
joystick is allowed to remain open, the other cylinder will start to retract, putting extreme stress on
lifting equipment and boom assembly.
Start engine (TM 10-3930-673-10) and run at idle. Fully retract boom hoist cylinder (14) using joystick.
Boom hoist cylinder will retract very slowly. Stop engine.
(10) Carefully lower boom hoist cylinder (14) onto board placed across vehicle deck so hydraulic line on cylinder
is not damaged.
Repeat Steps (7) through (10) for other boom hoist cylinder (14).