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Traction-LOK Differential Operation Check

Traction-Lok Differential Operation Check
A Traction-Lok differential can be checked for correct operation without removing it from the rear axle housing.

WARNING: A vehicle equipped with a Traction-Lok differential will always have both wheels driving. If only one wheel is raised off the floor and the rear axle is driven by the engine, the wheel on the floor could drive the vehicle off the stand or jack. Be sure both rear wheels are off the floor.

WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.





Raise and remove only one rear wheel. Install the special tool on the wheel bolts.





Use a torque wrench with the capacity of at least 271 Nm (200 ft. lbs.) to rotate the axle shaft. Be sure that the transmission is in NEUTRAL, and that one rear wheel is on the floor while the other rear wheel is raised off the floor. The breakaway torque required to start rotation must be at least 27 Nm (20 ft. lbs.). The initial breakaway torque may be higher than the continuous turning torque.

The axle shaft must turn with even pressure throughout the check without slipping or binding. If the torque reading is less than specified, check the differential case for incorrect assembly.