BOOM ASSEMBLY REPLACEMENT - CONTINUED
REMOVAL - CONTINUED
In step 15, 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 and run at full throttle (TM 10-3930-660-10).
Cylinder will retract very slowly.
Fully retract boom hoist cylinder (12) using joystick.
Stop engine (TM 10-3930-660-10).
Carefully lower cylinder (12) onto board placed across
vehicle deck so hydraulic line on cylinder is not dam-
Repeat steps 13 thru 17 for other cylinder (6).
Place jackstand or support on front of vehicle deck.
Adjust support so that boom assembly (8) will be level
Carefully lower boom assembly (8) with hoist and
sling until front of outer boom section is on jackstand
or other suitable support.
Remove boom assembly (8) from vehicle frame.