Backlash Clunk

Excessive backlash clunk under acceleration or de-acceleration can be caused by any of the following:

• Worn differential pinion shaft.
• Worn differential pinion and/or side gear teeth.
• Worn thrust washers.
• Excessive clearance between the side gears and the axle shafts.
• Excessive clearance between differential side gears and the bore in the case.
• Excessive drive pinon and ring gear backlash.

Inspect, adjust or replace the affected components as necessary.