JLG 860SJ Operator Manual - Manual (Page 51)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121630 – JLG Lift – 3-11
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 unaf-
fected. 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 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 “coordi-
nated” 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 selecting
either crab or compound steer, then select front steer (cen-
ter switch position) to operate the normal steering function.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR SLIGHT LEVELING OF
THE PLATFORM. INCORRECT USE COULD CAUSE THE LOAD/OCCUPANTS TO SHIFT OR
FALL. FAILURE TO DO SO COULD RESULT IN DEATH OR SERIOUS INJURY.
3. Platform Leveling Override
A three position switch allows the operator to
adjust the automatic self leveling system. This
switch is used to adjust platform level in situa-
tions such as ascending/descending a grade.
4. Horn
A push-type Horn switch supplies electrical
power to an audible warning device when pressed.
5. Power/Emergency Stop Switch
A two-position red mushroom shaped switch
furnishes power to Platform Controls when
pulled out (on). When pushed in (off ), power is
shut off to the platform functions.