Driveshaft Vibrates

1. Road test the vehicle to determine the critical vibration points. Note the road speed, the engine rpm, and the shift lever positions at which the vibration occurs.
2. Stop the vehicle, place the transmission lever in neutral and run the engine through the critical speed ranges determined in Step 1.
3. If no vibration is felt, balance the driveshaft.

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

WARNING: A vehicle equipped with a Traction-Lok(R) 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.





Raise only one rear wheel. Install the Differential Clutch Gauge on the wheel lugs.





Use a torque wrench with a 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.

Traction-Lok(R) Differential Check Road Test
1. Place one wheel on a dry surface and the other wheel on ice, mud or snow.
2. Gradually open the throttle to obtain maximum traction prior to break away. The ability to move the vehicle demonstrates correct operation of a Traction-Lok(R) rear axle assembly.
3. When starting with one wheel on an excessively slippery surface, a slight application of the parking brake may be necessary to help energize the Traction-Lok(R) feature of the differential. Release the brake when traction is established. Use light throttle on starting to provide maximum traction.
4. If, with unequal traction, both wheels slip, the limited slip rear axle has done all it can possibly do.
5. In extreme cases of differences in traction, the wheel with the least traction may spin after the Traction-Lok(R) has transferred as much torque as possible to the non-slipping wheel.