SECTION 2 - PREPARATION AND INSPECTION
2-8
– JLG Lift –
3120889
2.5
DAILY FUNCTIONAL CHECK
THE LOAD MANAGEMENT SYSTEM AND THE AXLES (PROPER
EXTENSION AND RETRACTION) MUST BE CHECKED PRIOR TO
ANY OTHER SYSTEMS AND/OR FUNCTIONS.
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, where
applicable, then from platform controls.
1.
Axles, Extending and Retracting.
a. From the ground control, activate the machine
hydraulic system and raise the boom. Extend
the boom no more than 2.4 m (8 feet).
b. Position STEER/AXLES valve, located at the
front of the frame to AXLES.
c. Position boom over drive wheel end of machine.
Remove axle lock pins.
D O N O T U SE EX T E N D - A - R EA C H ( I F E QU I P PED ) TO L I FT
MACHINE WHEN EXTENDING AND RETRACTING AXLES.
d. Position LIFT control to DOWN and hold until
drive wheels rise from the ground; it may be nec-
essary to feather the lift control to maintain drive
wheel elevation.
e. With the aid of an assistant, position EXTEND-
ABLE AXLE/STEER switch located on platform
control console to EXTEND until axles are fully
extended and the AXLES SET light is on. Install
axle lock pins.
f.
Position LIFT control to UP to lower the
machine; elevate the boom sufficiently and repo-
sition the boom over the steer wheel end of the
machine.
g. Remove the tie rod lock pins, steer cylinder lock
pin, and axle lock pins.
h. Position LIFT control to DOWN and hold until the
steer wheels rise from the ground; it may be
necessary to feather the LIFT control to maintain
wheel elevation.
i.
With the aid of an assistant, position EXTEND-
ABLE AXLE/STEER switch on platform console
to EXTEND until axles are fully extended.
j.
Align steer wheels and insert tie rod lock pin,
axle lock pins, and steer cylinder lock pins.
k. Position LIFT control to UP to lower the machine
steer wheels; position STEER/AXLES valve to
STEER.
l.
Cycle the steer system in both directions to
ensure the tie rods are properly locked.
m. Remove any one of the axle lock pins. From the
ground control, monitor the AXLES SET indica-
tor and attempt to lift and telescope the boom.
With an axle lock pin removed, you will not be
able to lift the boom above horizontal or tele-
scope out beyond 3.5 m (11.5 feet). At these
positions, the AXLES SET indicator will not light,
ind ic ating th e axles are n o t exten d ed and
locked. If the light does not illuminate when the
axl e s ar e e xt en d e d an d s e t an d t h e p i n s
installed, contact a qualified service technician
before continuing operation.
Содержание 100HX
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