Correcting Vibration at the Center Support Bearing

These guidelines apply to the two-piece propeller shaft only. First-order driveline vibrations that occur mainly at the center support bearing are usually the result of excessive runout at the stub (splined) shaft.
Unlike other first-order driveline vibrations, these vibrations can appear at unusually low speeds of 40 Kph (25 mph) and up.
Perform the following procedure in order to correct this type of vibration:
1. Mark the position of the rear propeller shaft at both ends for proper reassembly.




2. Remove the rear propeller shaft from the vehicle.
3. Measure the runout of the spines approximately 12.7 mm (0.5 in) from the end
4. Replace the shaft if the runout exceeds the tolerances.
Stub shaft/spline runout 0.076 mm (0.003 in).
Correcting the stub shaft/spline runout will usually eliminate the vibration. If some residual vibration is still present, perform a road test on the vehicle. Determine if an on-vehicle system balance of the driveline is necessary