· 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
Start engine (TM 10-3930-673-10).
Raise boom (1) so boom hoist cylinder upper
pivot pins (2) are above cab (3).
Stop engine (TM 10-3930-673-10).
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
Using suitable lifting device, support boom
Remove boom hoist cylinder upper pivot pin
(2) from boom (1) and boom hoist cylinder
Place wooden board behind cab (3) on vehicle deck (5) to support boom hoist cylinder (4) when cylinder is
Place wood block under rod eye (6) of boom hoist cylinder (4) to prevent accidental damage to cylinder rod
Using suitable lifting device, support boom hoist cylinder (4).
Remove locknut (7), screw (8), and upper pivot pin (2) from boom (1) and boom hoist cylinder (4). Discard