JLG 600A_AJ Operator Manual - Manual (Page 34)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
2-6 – JLG Lift – 3121615
2.3 LIMIT SWITCH FUNCTIONAL CHECK
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:
a. Lift boom up to 2 degrees to 7 degrees above horizon-
tal. The switch should activate at this point.
b. Lift boom down to 2.5 degrees to 7.5 degrees below
horizontal. The switch should reset at this point.
3. Raise main boom, extend and retract telescope. Check for
delayed movement of fly section, indicating loose cables.
4. Swing turntable to LEFT and RIGHT a minimum of 45
degrees. Check for smooth motion.
5. Check the chassis out of level indicator located on the plat-
form control console by driving, with the machine in level
position, up a suitable ramp of at least 5° slope. Check the
out of level indicator, with the machine on the ramp. If the
light does not illuminate, return the machine to a level sur-
face, shut down the machine, and contact a qualified techni-
cian before resuming operation.
NOTE: Steps 6 & 7 cover 600S ANSI market machines with dual capaci-
ties (500 & 1000 lb. [227 kg for ANSI markets and 230 kg for CE
and Australia markets & 454 kg for ANSI markets and 450 kg for
CE and Australia markets]).
6. Check capacity limit switch as follows:
Boom Length Switch.
a. Raise boom to horizontal (place angle indicator on base
boom between boom pivot pin and lift cylinder attach
pin).
b. Telescope boom out until 500 lb. (227 kg for ANSI mar-
kets and 230 kg for CE and Australia markets) light
comes on (may need to used auxiliary power to posi-
tion boom correctly).