A8 Quattro Sedan V8-4.2L (BFM) (2005)
Drive/Propeller Shaft: Removal and Replacement
Driveshaft Assembly Overview
Driveshaft Assembly Overview
‹› Refer to General Repair Instructions => [ General Repair Instructions ] See: Rear Final Drive/Description and Operation/Rear Final Drive 01R
(09EA Transmission).
‹› Activate the car jack mode before lifting the vehicle on a hoist (i.e. when there is no weight on the wheels).
‹› The drive shaft can be bent as far as the end stop of the center joint provided that no force is used. Bending the joint forcibly to the end stop can
damage the center joint.
‹› Always store and transport the drive shaft in the extended position.
‹› No repair work can be performed on the drive shaft with the exception of removing, installing and adjusting.
‹› If the drive shaft is only disconnected at one end (i.e. from the transmission or from the rear final drive) it must be tied up at the constant velocity
joints.
‹› Before removing, mark the positions of all parts in relation to each other. Re-install in the same position or imbalance will be excessive and the
bearings could be damaged and cause rumbling noises.
‹› When the drive shaft has been disconnected from the rear final drive, the balance disc (thick washer) that may be installed between the lock plate
and the socket head bolt must not be re-installed.
‹› If the customer reports a droning noise or vibrations, always start by checking the radial run-out at the drive shaft flange on the rear final drive
before replacing the drive shaft. Accurate adjustment may correct the fault => [ Radial Run-Out at Driveshaft Flange, Measuring ] See: Rear Final
Drive/Service and Repair/Procedures/Rear Final Drive 01R (09EA Transmission)/Radial Run-Out at Driveshaft Flange, Measuring.