JLG 660SJ Operator Manual - Manual (Page 44)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-10 – JLG Lift – 3121297
Platform Station
(See Figure 3-4.)
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CON-
TROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF OR NEUTRAL POSITION
WHEN RELEASED.
1. Drive Speed/Torque Select
The machine has a three posi-
tion switch - The forward posi-
tion gives maximum drive
speed. The back position gives
maximum torque for rough ter-
rain and climbing grades. The
center position allows the machine to be driven as qui-
etly as possible.
2. Steer Select (If Equipped)
When equipped with four wheel steering,
the action of the steering system is operator
selectable. The center switch position gives
conventional front wheel steering with the rear wheels
unaffected. This is for normal driving at maximum
speeds. The forward position is for “crab” steering.
When in this mode both front and rear axles steer in the
same direction, which allows the chassis to move side-
ways as it goes forward. This can be used for position-
ing the machine in aisle ways or against buildings. The
back switch position is for “coordinated” steering. In this
mode the front and rear axles steer in the opposite
directions to produce the tightest turning circle for
maneuvering in confined areas.
To re-synchronize the front and rear axles, position the
rear drive wheels to the forward drive position by select-
ing either crab or compound steer, then select front
steer (center switch position) to operate the normal
steering function.