OUTER BOOM REPLACEMENT/REPAIR - continued

TM 10-3930-673-34

(4)

Start engine (TM 10-3930-673-10). Lower

outer boom (1) until pivot pins (13) are just

above cab. Stop engine.

WARNING

Outer boom weighs 1952 lbs (885.41 kg).

Attach suitable lifting device prior to

removal or installation to prevent possible

injury to personnel.

(5)

Support outer boom (1) with hoist and slings

or other suitable lifting device positioned at

front of boom.

(6)

Place wood block across vehicle deck behind

cab to support boom hoist cylinders (14)

when cylinders are lowered.

TR01371

(7)

Remove screw (15) and locknut (16) from

pivot pin (13). Discard locknut.

(8)

Support boom hoist cylinder (14). Remove pivot pin (13) from outer boom (1) and boom hoist cylinder.

CAUTION

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.

(9)

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.

(11)

Repeat Steps (7) through (10) for other boom hoist cylinder (14).

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