JLG 600SC_660SJC Operator Manual - Manual (Page 42)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-10 – JLG Lift – 3120897
5. Tilt Alarm Warning Light. (Orange)
This orange illuminator indicates that the chassis is
on a slope. If illuminated when boom is raised or
extended, retract and lower to below horizontal then
reposition machine so that it is level before extend-
ing boom or raising boom above horizontal. If the
boom is above horizontal and the machine is on a 5
degree slope, an alarm will sound and CREEP is
automatically activated.
IF ILLUMINATED WHEN BOOM IS RAISED OR EXTE NDED,
RETRACT AND LOWER TO BELOW HORIZONTAL THEN REPOSI-
TION MACHINE SO THAT IT IS LEVEL BEFORE EXTENDING
BOOM OR RAISING BOOM ABOVE HORIZONTAL.
NOTE: MAIN LIFT, SWING, and DRIVE control levers are
spring-loaded and will automatically return to neutral
(OFF) position when released.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY
CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING
PLATFORM MOVEMENT DO NOT RETURN TO THE OFF OR NEU-
TRAL POSITION WHEN RELEASED.
6. Main Lift/Swing Controller.
An infinitely proportional dual axis joystick is pro-
vided for main lift and swing. Push forward to lift up,
pull backward to lift down. Move right to swing right,
move left to swing left.
NOTE: Main lift and swing functions may be selected in
combination. The handle features a round gate so
that maximum speed is reduced when multiple func-
tions are selected.
7. Main Telescope Control.
The MAIN TELESCOPE control switch affords
extension and retraction of the main boom when
positioned to IN or OUT.
8. Drive/Steer.
Proportional dual axis joystick is provided to control
drive and steer. Push forward to drive straight for-
ward. The joystick is proportional, with the drive
speed increasing as the joystick is moved further
from its neutral position. Moving the joystick forward
and to the side steers the machine in the direction of
the side displacement of the joystick. With the joy-
stick positioned all the way to the side and slightly
forward, the machine will turn in place with one track
stopped and the other one turning the machine
around the center of the stopped track.
Moving the joystick to the side (no dislocation in the
forward or aft direction) will turn the machine by
counterrotation around the center of the machine by
powering the tracks in opposite directions.
Pulling the joystick back and to the sides controls
speed and direction of drive in reverse.
NOTE: Both drive and steer functions work in the opposite
direction when the boom is positioned over front of
the chassis (over idler wheels).
NOTE: When boom is positioned above horizontal and any
of the following switches, DRIVE SPEED/TORQUE
SELECT or FUNCTION SPEED, are positioned to
HIGH, high function speeds are automatically cut out
and the machine continues to operate at a lower
speed.
DO NOT OPERATE MACHINE IF DRIVE SPEED /TORQUE SELECT
OR FUNCTION SPEED SWITCHES OPERATE WHEN BOOM IS
ABOVE HORIZONTAL.
9. Drive/Steer Enable.
The Drive/Steer Enable Switch (trigger switch) is
located on the front of the Drive Steer Joystick. The
button must be pushed in for the Drive/Steer control
to function. If at any time the Enable Switch is
pushed in and no function is operated for a period of
7 seconds, the switch will "time-out" and the foot-
switch in the platform must be cycled again to renew
normal functions.