Removal - TM-10-3930-673-20-20695

TM 10-3930-673-20-2

Remove caps and plugs as hoses are installed. Wipe all sealing surfaces on hydraulic components

and hoses clean and dry. Apply light coating of clean hydraulic oil to all seals as installed.

Left and right boom hoist cylinders are removed and installed the same way. Right boom hoist

cylinder shown.

(1)

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

(2)

Raise boom (1) so boom hoist cylinder upper

pivot pins (2) are above cab (3).

(3)

Stop engine (TM 10-3930-673-10).

TR00003

WARNING

Be sure boom is supported with lifting

device before upper pivot pins are

removed. Combined weight of boom and

attachment is 6,300 lb (2857.63 kg).

Weight of boom alone is approximately

4,100 lb (1859.73 kg). Weight of each

boom hoist cylinder is approximately

182 lb (82.55 kg). Failure to support

boom during removal of upper pivot pins

could result in injury or death to

personnel.

(4)

Using suitable lifting device, support boom

(1).

(5)

Remove boom hoist cylinder upper pivot pin

TR00842

(2) from boom (1) and boom hoist cylinder

(4).

(a)

Place wooden board behind cab (3) on vehicle deck (5) to support boom hoist cylinder (4) when cylinder is

lowered.

(b)

Place wood block under rod eye (6) of boom hoist cylinder (4) to prevent accidental damage to cylinder rod

eye.

(c)

Using suitable lifting device, support boom hoist cylinder (4).

(d)

Remove locknut (7), screw (8), and upper pivot pin (2) from boom (1) and boom hoist cylinder (4). Discard

locknut.

18-159