Daf LF.book - Peterbilt Motors Company

Driving
DIFFERENTIAL LOCK
The rear axle can optionally be equipped with a differential lock which can be
activated from the cab.
Directions for use
The differential lock may only be used when driving on soft ground or on a slippery
road surface, and never on firm ground.
The differential lock should be engaged:
- with the vehicle stationary or moving very slowly
- with the clutch pedal depressed.
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The differential lock must never be engaged if one of the wheels is
spinning; always wait until the wheel has stopped spinning before
engaging the differential lock. Disengage the differential lock as
soon as you reach firm ground. If the warning indicator on the
instrument panel stays on, drive forwards and then reverse a short
distance in order to release the locking mechanism.
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Failure to follow the above directions may cause damage to the
differential lock and/or the differential.
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