General Information: Components

Rear Final Drive

For the correct bolts and other components according to the final drive code .
Check the gear oil level. Refer to GEAR OIL LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING and the ATF level, refer to ATF LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING in the final drive when replacing the rear final drive and fill if necessary.
Capacities and specifications, refer to ENGINE CODES, TRANSMISSION ALLOCATIONS, RATIOS AND CAPACITIES .
Clean the contact surfaces before installing the brackets and waxed components. Contact surfaces must be free of wax and grease.
Thoroughly clean all connections and the surrounding area before disconnecting.

ATF and Gear Oil

The rear final drive 0BF and 0BE have separated chambers for the ATF and gear oil.

Only the ATF available as a replacement part may be used for the hydraulic components (hydraulic control unit and the left and right chambers).
Only the gear oil available as a replacement part may be used for the final drive (drive train, differential).
Using other ATF or gear oil will cause the final drive to malfunction.

CAUTION:

Gear oil and ATF change on the Audi RS 5

Oil, Environment and Disposal Regulations

Sealant

Thoroughly clean the separating surfaces on the housing before applying the sealant.
Apply the sealantD 176 501 A1 evenly and not too thick.
Do not get any sealant in the vent holes or oil channels.

Shaft Seals

Lightly coat the shaft seals on the outer circumference with oil before installing
The open side on the shaft seals faces the fluid to be sealed off.
Check the gear oil level. Refer to GEAR OIL LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING or the ATF level, refer to ATF LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING in the final drive after replacing the shaft seals.

Flange/Driveshaft Seal

Fill the space between the lips -arrow- halfway with sealing grease G 052 128 A1.

Fig 1: Identifying Oil Seal Sealing Lips
Courtesy of AUDI OF AMERICA, LLC

Flange Shaft Seals

Coat the space between the sealing lips -arrow- with ATF.

Fig 2: Identifying Oil Seal
Courtesy of AUDI OF AMERICA, LLC

O-rings, Seals and Gaskets

Always replace the O-rings, seals and gaskets.
Check the contact surfaces on the housing and shaft for burrs and damage after removing the seals.
Thoroughly clean the separating surfaces on the housing before assembling.
Lightly lubricate O-rings before installing, this prevents the O-rings from being pinched when inserting.
Check the gear oil level. Refer to GEAR OIL LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING or the ATF level, refer to ATF LEVEL IN REAR FINAL DRIVE 0BF AND 0BE, CHECKING in the final drive after replacing the gaskets, seals and O-rings.

Circlips

Do not stretch the circlips.
Always replace damaged or stretched circlips.
The circlips must touch the bottom of the groove.
Replace the adapter sleeves. Installation position: Slot -A- is longitudinal to line of force -arrow-.

Fig 3: Identifying Locking Elements
Courtesy of AUDI OF AMERICA, LLC

Bolts and Nuts

Loosen and tighten the bolts and nuts from the covers and housings diagonally.
Do not cant, rather loosen and tighten especially sensitive parts in diagonal manner in stages.
Tightening specifications for unoiled bolts and nuts are given.
Always replace self-locking nuts and bolts.
Using a wire brush, clean threads of bolts (replace outer driveshaft bolts) which are secured with locking compound. Install the bolts with locking fluid AMV 185 101 A1.
If self-locking bolts were installed or if regular bolts were installed with locking fluid, then the threaded holes must be cleaned with a thread cutter. If the holes are not cleaned, then the bolts could break off the next time they are removed.