JLG 120-SXJ Operator Manual - Manual (Page 26)

SECTION 2 - PREPARATION AND INSPECTION
2-10 – JLG Lift – 3121809
2. Load Management System.
a. Extend all axles fully.
b. With the boom fully retracted, raise the boom to
horizontal.
c. Position the toggle switch located on the right
side of the ground control box to the P position
and hold.
d. Extend the boom until it stops. The boom must
stop on the white tape on the mid boom section.
Release the toggle switch.
e. Retract the boom 3 meters and attempt to
extend the boom. Boom must not extend. Reset
the system by activating toggle switch marked R
located on the right side of the ground control
station.
f. Position the toggle switch located on the right
side of the ground control station to the M posi-
tion and hold.
g. Extend the boom until it stops. The boom must
stop on the white tape on the mid boom section.
Release toggle switch.
h. Retract the boom 3 meters and attempt to
extend boom. Boom must not extend. Reset
system by activating toggle switch marked R
located on the right side of the ground control
station.
IF BOOM DOES NOT STOP AT WHITE TAPE OR BOOM CAN BE
EXTENDED AFTER BEING RETRACTED 3 METERS WITHOUT
RESETTING, THE SYSTEM MUST BE REPAIRED BY JLG AUTHO-
RIZED SERVICE PERSONNEL BEFORE MACHINE CAN BE USED.
3. Drive forward and reverse; check for proper opera-
tion.
4. Steer left and right; check for proper operation.
5. If equipped with 4 wheel steer, check rear steer left
and right for proper operation.
6. Check platform rotator for smooth operation and
assure platform will rotate 90 degrees in both direc-
tions from centerline of boom.
7. 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.
8. If equipped with jib, raise and lower jib (Cycle func-
tions several times). Check for smooth elevation and
swing motion.
9. Telescope boom in and out several cycles at various
degrees of elevation lengths. Check for smooth tele-
scope operation.
10. Check that platform automatic self-leveling system
functions properly during raising and lowering of the
boom.
11. 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.
12. Swing turntable to LEFT and RIGHT a minimum of
45 degrees. Check for smooth motion.
13. 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.
14. 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.
15. Auxiliary Power.
Operate each function control switch (e.g. TELE,
LIFT and SWING) to assure that they function in
both directions using auxiliary power instead of
engine power.