Isuzu FSS - Page 219

4-85
CONTROLS AND INSTRUMENTS
Use the differential lock only when one
or more than one of the tires on the drive
axle is on a muddy or sandy road surface,
frozen and sloped road surface, or other
slippery road surfaces.
To engage the differential lock, press the
rear differential lock switch on the "ON"
side. The rear differential lock indicator
light comes on. Depending on the rear
differential lock type, the rear differential
lock indicator light may come on after the
rear differential lock system has engaged.
To disengage the differential lock, press
the switch on the "OFF" side. The rear
differential lock indicator light goes out.
Rear Differential Lock Switch
V
CAUTION
The differential may develop a problem if the rear wheels are allowed to spin
repeatedly without using the differential lock.
To engage the differential lock, stop the vehicle and then press the rear
differential lock switch on the "ON" side.
With the differential lock engaged, the turning radius of the vehicle increases.
Do not engage the differential lock unless needed. Use of differential lock on
dry pavement hastens tire wear, increases noise and vibration, and can cause
damage to the differential lock system.
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Rear differential lock indicator light
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