Diff trouble

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Originally submitted by T:

Noises:

Symptom:

Knocking from one or both sides of the rear axle:

Knocking from one or both sides of the rear axle with the throttle shut and the vehicle coasting.

Cause:

The sidegear bearing for that axle in the Differential Carrier (the Hemisphere)
is worn into an oval shape. The differential end of that axle is being stirred around in a circle and the axle is being flexed with each rotation. This can cause an axle to break. 

Links:

Terms:

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