JLG 500RTS Operator Manual - Manual (Page 17)

SECTION 2 - MACHINE PREPARATION AND INSPECTION
3120828 – JLG Lift – 2-3
2.5 DAILY FUNCTIONAL CHECK
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY
CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING
PLATFORM MOVEMENT DO NOT RETURN TO THE OFF POSITION
WHEN RELEASED.
A functional check of all systems must be performed,
under no load, in an area free of overhead and ground
level obstructions. Perform the functional check in accor-
dance with the following procedure once the walk-around
inspection is complete:
1. From the ground control station, raise and lower the
platform several times and check for the following:
a. Smooth elevation and lowering.
b. High function speeds cut out as soon as possi-
ble after the platform lifts beyond the stowed
position and begins to elevate. High function
speeds must cut out prior to a maximum plat-
form height of 4.2 m (14 ft).
c. If equipped with oscillating axles - Make sure
that the axle lockout valve switch is free of debris
and the plunger of the switch actuates properly.
As shown below, the plunger must extend (out)
a minimum of 5.6 mm (0.22 in) to lock the axles
when the scissor arms are raised. When fully
lowered, the scissor arms will press the plunger
in to allow the axles to oscillate.
2. Ensure the machine is on a firm level surface. Check
for proper operation of the leveling jack limit switch
first from the ground control station and then from
the platform controls. With all the leveling jacks
retracted, check that the platform will not raise
above the following limits:
400RTS - 8.0m (26ft) Approximate elevation 65%
500RTS - 6.7m (22ft) Approximate elevation 44%
3. Drive forward and reverse, check for proper opera-
tion.
4. Check that drive brakes hold when machine is
driven up a hill, not to exceed rated gradeability, and
stopped.
5. Steer left and right. Check for proper operation.
6. Check hydraulic oil reservoir sight gauge. Refer to
Lubrication Chart.
TO AVOID INJURY DO NOT OPERATE A MACHINE UNTIL ALL
MALFUNCTIONS HAVE BEEN CORRECTED. USE OF A MALFUNC-
TIONING MACHINE IS A SAFETY VIOLATION.
Min 5.6 mm (0.22 in.)