JLG 740AJ Operator Manual - Manual (Page 73)

SECTION 4 - MACHINE OPERATION
3121295 – JLG Lift – 4-11
Raising and Lowering the Tower Boom
To raise or lower the Tower Boom, depress footswitch, posi-
tion TOWER LIFT controller UP OR DOWN, and hold until the
desired height is reached
DISCONTINUE OPERATION IF THE UPRIGHT IS OUT OF ALIGNMENT OR
THE BOOM MALFUNCTION LIGHT REMAINS ILLUMINATED.
IF THE UPRIGHT IS OUT OF ALIGNMENT WITH THE PLATFORM RAISED,
LOWER THE MAIN BOOM AND TELESCOPE OUT UNTIL THE PLATFORM
REACHES THE GROUND. THE TOWER BOOM DOWN FUNCTION IS CUT
OUT IN THIS CONDITION. REPORT THE PROBLEM TO THE PROPER SER-
VICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL THE CONDI-
TION IS CORRECTED.
Raising and Lowering the Main Boom
To raise and lower Main Boom, depress footswitch, position
MAIN LIFT controller to UP OR DOWN, and hold until desired
height is reached.
Telescoping the Main Boom
To extend or retract Main Boom, depress footswitch, position
MAIN TELESCOPE control switch to IN or OUT, and hold
until platform reaches desired position.
4.9 SHUT DOWN AND PARK
1. Drive machine to a protected area.
2. Assure main boom is fully retracted and lowered over
rear (Drive) axle; all access panels and doors closed
and secured.
3. Remove all load and allow engine to idle 3-5 minutes to
permit reduction of engine internal temperatures.
4. At Ground Controls, turn KEY SELECT switch to (center)
OFF. Position, POWER/EMERGENCY STOP switch
(down) to OFF. Remove key.
5. Cover Platform Control console to protect instruction
placards, warning decals and operating controls from
hostile environment.