JLG 600SC_660SJC Operator Manual - Manual (Page 60)

SECTION 4 - MACHINE OPERATION
4-6 – JLG Lift – 3121156
USE EXTREME CAUTION WHEN APPROACHING A CREST OF ANY TER-
RAIN OBSTACLE. CHECK FOR CURBS, LARGE STONES, OR OTHER TER-
RAIN OBSTACLES INCLUDING OVERHEAD OBSTACLES AS THE
MACHINE WILL MAKE UNCONTROLLED PIVOTING MOTIONS WHEN THE
CENTER OF GRAVITY (CENTER OF TRACK FRAME) SHIFTS OVER AN
EDGE. SLOW DOWN TO MINIMIZE ACCELERATION DURING PIVOTING
MOVEMENT.
BEFORE DRIVING, MAKE SURE THE BOOM IS POSITIONED OVER THE
REAR OF THE CHASSIS (OVER FINAL DRIVES AND SPROCKETS). IF THE
BOOM IS OVER THE FRONT OF THE CHASSIS (OVER THE IDLER
WHEELS) STEER AND DRIVE CONTROLS WILL MOVE IN OPPOSITE
DIRECTIONS TO MACHINE CONTROLS.
Traveling Forward or Reverse
1. With engine running, depress footswitch and position
DRIVE control to FORWARD and hold for the duration of
forward travel desired.
2. Depress footswitch and position DRIVE control to
REVERSE and hold for duration of reverse travel
desired.
3. Depress footswitch, move joystick (DRIVE/STEER CON-
TROL) to select desired direction of travel (forward or
reverse), move DRIVE/STEER control to RIGHT for
smooth turn to right and LEFT for smooth turn to left.
4. To obtain sharp turns, move DRIVE SPEED/TORQUE
SELECT switch to the back position, slow down the
travel speed and move the DRIVE control lever to RIGHT
for a turn to the right and to LEFT for a turn to the left.
The sharpest possible turn is achieved when the joystick
is in the position to command one track to stop and the
other to move slowly.
TURN IN PLACE ONLY IN AN AREA FREE OF OBSTACLES AND ONLY
WITH THE BOOM FULLY RETRACTED. USE SLOW, GENTLE CONTROL
MOVEMENTS AND DO NOT OPERATE ANY OTHER FUNCTIONS DURING
COUNTER-ROTATION.
5. To obtain counter-rotation (turn in place), stop the
machine, move the DRIVE/STEER control lever directly
to RIGHT to get clockwise rotation and to LEFT to get
counterclockwise rotation.
6. To obtain maximum travel speed, position the DRIVE
controller to FAST and activate the following switches:
a. Position DRIVE SPEED/TORQUE SELECT switch to
FAST. (Forward Position)