JLG 860SJ Operator Manual - Manual (Page 52)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-14 – JLG Lift – 3121138
12. Lights. (If Equipped)
This switch operates control console panel lights and
head lights if the machine is so equipped. The ignition
switch does not have to be on to operate the lights, so
care must be taken to avoid draining the battery if left
unattended. The master switch and / or the ignition
switch at the ground control will turn off power to all
lights.
13. 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 driv-
ing 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 chas-
sis to move sideways as it goes forward. This can be
used for positioning 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.
14. Start/Auxiliary Power.
When pushed forward, the switch energizes the starter
motor to start the engine.
When pushed back, it energizes the electrically oper-
ated hydraulic pump, when actuated. (Switch must be
held ON for duration of auxiliary pump use.)
The auxiliary pump functions to provide sufficient oil flow
to operate the basic machine functions should the main
pump or engine fail. The auxiliary pump will operate
tower boom lift, tower telescope, main boom lift, main
telescope and swing.
15. Indicator Panel.
The LED Indicator Panel contains indicator lights that
signal problem conditions or functions operating during
machine operation.