Daily Functional Check - JLG 600SC Operator's And Safety Manual

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 platform 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 NEU-
TRAL 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 EMERGENCY 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
horizontal. 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.
NOTE: CE spec machines are single capacity (230kg) only.
3. Check capacity limit switch (if equipped) 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 230kg. light comes on
(may need to used auxiliary power to position
boom correctly).
c. Mark wear pad location on the fly and mid
booms.
d. Telescope boom out to full extension.
e. Measure from the mark on the fly boom to the
wear pad and measure from mark on the mid
boom to the wear pad.
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SECTION 2 - PREPARATION AND INSPECTION
f. Add These two numbers together (they should
be approximately equal) they should measure
348 to 353 cm.
Boom Angle Switch.
a. Telescope boom to full extension.
b. Lift boom up until 455 kg. light comes on.
c. Lift boom down using auxiliary power until 500
lb. light comes on. Boom angle must be 45
degrees to 50 degrees (place angle indicator on
base boom between boom pivot pin and lift cyl-
inder attach pin).
d. Lift boom up until 455 kg. light comes on. Boom
angle should be 55 degrees to 64 degrees.
NOTE: If limit switch settings need to be changed, you will
need to recheck that the 230 kg. light comes on at 45
degrees to 50 degrees when lifting down.
4. Drive Disable Switch (Refer to Figure 2-5., Drive
Function Operating Range Diagrams).
a. Telescope the boom out over 40 ft. (12.2 m).
b. Manually tilt the tilt sensor.
c. Drive Disable Indicator Light should come on.
d. Retract the boom and elevate to at least 55°.
e. Manually tilt the tilt sensor.
f. The Drive Disable Indicator Light should come
on again.
5. Raise main boom, extend and retract telescope.
Check for delayed movement of fly section, indicat-
ing loose cables.
NOTE: Turntable lock is on turntable facing platform. To dis-
engage lock, pull snap pin from lock pin, lift lock pin
up to unlock turntable. Return snap pin to lock pin to
hold lock pin in the disengaged position. Reverse
procedure to engage turntable lock.
6. Swing turntable to LEFT and RIGHT a minimum of
45 degrees. Check for smooth motion.
7. With the aid of an assistant to monitor the CHASSIS
OUT OF LEVEL indicator light on the platform con-
trol console, manually activate the indicator light by
compressing any one of the three tilt indicator
mounting springs. If the light does not illuminate,
shut down machine and contact a qualified service
technician before continuing operation.
8. Check that platform automatic self-leveling system
functions properly during raising and lowering of the
boom.
9. Check platform level adjustment system for proper
operation.
– JLG Lift – 2-9