Drivetrain - Rear End Click/Crack Noise On Load Change
SI B33 04 08Rear Axle
August 2009
Technical Service
This Service Information bulletin supersedes SI B33 04 09 dated October 2008.
[NEW] designates changes to this revision
The differential input flange mating surface with the input drive pinion is insufficiently greased.
E82 and E88 (1 Series), all models
E85 and E86 (Z4), all models
E60 and E61 (5 Series), all models
E63 and E64 (6 Series), all models
E65 and E66 (7 Series), all models
E90, E91, E92 and E93 (3 Series), all models
The customer complains that a single cracking or clicking noise can be heard from the rear of the vehicle while engaging a drive gear, releasing the clutch, during load reversal (shifting from reverse to drive, etc.), or when accelerating from a stationary position.
This is not a failure of the differential assembly. Do not replace the complete differential.
Remove the differential drive flange in accordance with Repair Instruction RA 33 11 021.
Apply lubricant [NEW] P/N 83 23 0 443 864 on the input flange mating surface (1), as described in the illustration.
Before complete reassembly. replace the input flange seal and collar nut retaining plate as described in RA 33 01 021. Refer to the EPC for correct part numbers, based on model.
PARTS INFORMATION
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
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