JLG 600SC_660SJC Operator Manual - Manual (Page 25)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121606 – JLG Lift – 2-5
Daily Functional Check
A functional check of all systems should be performed, once the
walk-around inspection is complete, in an area free of overhead
and ground level obstructions. First, using the ground controls,
check all functions controlled by the ground controls. Next, using
the platform controls, check all functions controlled by the plat-
form controls.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR
TOGGLE SWITCHES CONTROLLING PLATFORM MOVEMENTS DO NOT RETURN TO THE
OFF OR NEUTRAL POSITION WHEN RELEASED.
TO AVOID COLLISION AND INJURY IF PLATFORM DOES NOT STOP WHEN A CONTROL
SWITCH OR LEVER IS RELEASED, REMOVE FOOT FROM FOOTSWITCH OR USE EMER-
GENCY STOP TO STOP THE MACHINE.
NOTE: Perform checks from ground controls first, then from platform
controls.
1. Operate machine from ground control.
NOTE: For adjustments see Service Manual, Limit Switch Adjustments.
2. Check elevation limit switch as follows:
While driving in high drive, elevate the boom to approxi-
mately 10 degrees. Drive should cut back to low speed. The
switch should reset when the boom is fully lowered.
3. Check capacity limit switch as follows:
a. Boom Length Switch.
Raise boom to horizontal. Telescope boom out until 500
lb. light comes on. Make sure the switch resets and the
1000 lb. light comes back on when telescoping in.
b. Boom Angle Switch.
Telescope boom to full extension.
Lift boom up until 1000 lb. light comes on.
Lift boom down using auxiliary power until 500 lb. light
comes on. Boom angle must be approximately 45 to 50
degrees
Lift boom up until 1000 lb. light comes on. The switch
should reset when the boom angle is about 55 degrees
to 64 degrees.
NOTE: If limit switch settings need to be changed, you will need to
recheck that the 500 lb. light comes on at 45 degrees to 50
degrees when lifting down.