JLG 80HX_HX+6 Operator Manual - Manual (Page 28)

SECTION 2 - PREPARATION AND INSPECTION
3120890 – JLG Lift – 2-11
control switch to down and hold until the wheels
on the selected axle rise from the ground.
e. Position the Jack/Steer/Axles select switch to
AXLES. Then, position the Steer/Axles/Jack
control switch to left until the axles are fully
extended. On machines with fixed axles, install
axle lock pins. If extending the steer axle, also
install the tie rod lock pins and steer cylinder
lock pin.
f. Position the JACK control to the up position to
lower the machine. Ensure the jack is fully
retracted before operating the machine.
ENSURE THE JACK IS FULLY RETRACTED BEFORE OPERATING
THE MACHINE. FAILURE TO DO SO COULD RESULT IN DAMAGE
TO THE MACHINE.
g. Repeat steps b thru f to extend the opposite
axle.
h. Position the STEER/AXLES valve to STEER.
i. On machines with fixed axles, cycle the steer
system in both directions to ensure the tie rod
and steer cylinder are properly locked.
j. For machines equipped with a green Axles Set
Indicator lamp, verify proper operation of the
lamp at the platform and ground controls.
2. Drive forward and reverse; check for proper opera-
tion.
3. Steer left and right; check for proper operation.
4. If equipped with 4 wheel steer, check rear steer left
and right for proper operation.
5. If equipped, check platform rotator for smooth oper-
ation and assure platform will rotate 90 degrees in
both directions from centerline of boom.
6. Raise, lower, and swing boom to LEFT and RIGHT a
minimum of 45 degrees (Cycle function several
times.) Check for smooth elevation and swing
motion.
7. If equipped with Extend-A-Reach, raise and lower
and swing Extend-A-Reach (Cycle functions several
times). check for smooth elevation and swing
motion.
8. Telescope boom in and out several cycles at various
degrees of elevation lengths. Check for smooth tele-
scope operation.
9. Check that platform automatic self-leveling system
functions properly during raising and lowering of the
boom.
10. Check platform level adjustment system for proper
operation.
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.
11. Swing turntable to LEFT and RIGHT a minimum of
45 degrees. Check for smooth motion.
12. 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.
13. Footswitch.
FOOTSWITCH MUST BE ADJUSTED SO THAT FUNCTIONS WILL
OPERATE WHEN PEDAL IS APPROXIMATELY AT ITS CENTER OF
TRAVEL. IF SWITCH OPERATES WITHIN LAST 1/4" OF TRAVEL,
TOP OR BOTTOM, IT SHOULD BE ADJUSTED.
a. Activate hydraulic system. By depressing foot-
switch. Operate TELESCOPE and hold control.
Remove foot from footswitch, motion should
stop. If it does not, shut down machine and con-
tact a certified JLG service technician.
b. With footswitch depressed, operate LIFT and
hold control. Remove foot from footswitch,
motion should stop. If it does not, shut down
machine and contact a certified JLG service
technician.
c. With engine power shut down, depress the foot-
switch. Attempt to start engine. Engine should
n o t a t t e m p t t o s t a r t w h e n f o o t s w i t c h i s
depressed. If starter engages or engine turns
over, shut down machine and contact a certified
JLG service technician.