Left Seal, Replacing

WARNING: This page is about a different car, the 2015 Audi S7, 2015 Audi RS 7, 2014 Audi S7, 2014 Audi RS 7, and 2013 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Used Oil Collection and Extraction Unit SMN372500
Seal Installer - Flange Shaft T40164
Grease.

Procedure

Fig 1: Locating Final Drive Cover Bolts

Courtesy of AUDI OF AMERICA, LLC

Secure the transmission on the Engine And Transmission Holder VAS6095, refer to SECURING ON ENGINE AND TRANSMISSION HOLDER .

-- Place the Used Oil Collection and Extraction Unit SMN372500 under the transmission.

-- Remove the right flange shaft, refer to RIGHT FLANGE SHAFT, REMOVING AND INSTALLING .

-- Remove the bolts -arrows-.

-- Carefully remove the front final drive cover; when doing this, the transmission fluid will drain out.

CAUTION:

Danger of causing damage to the differential.

Slowly and carefully remove front final driver cover from transmission housing. Otherwise differential can fall out of transmission.
A differential that has fallen out can no longer be installed. If differential falls out, transmission must be replaced.
Make sure the differential bearing inner race and adjustment shims do not fall out of the transmission housing and front final drive cover.
Bearing inner races and adjustments that have fallen out cannot be allocated with workshop equipment.

-- Carefully remove the differential -arrow- and lay it on a soft support.

Fig 2: Identifying Differential

Courtesy of AUDI OF AMERICA, LLC

-- Remove the left flange shaft, refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .

Fig 3: Prying Out Seal From Back

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

Danger of damaging the seating surface in the transmission housing.

Position the screwdriver.

-- Pry out the seal from the back.

-- Lightly coat the new seal on the outside with oil and install it using the Seal Installer - Flange Shaft T40164.

Fig 4: Installing Seal Using T40164

Courtesy of AUDI OF AMERICA, LLC

The open side of the seal faces the Thrust Piece for Final Drive at Gearbox T40164.

-- Install the shaft seal for the left flange shaft using the Seal Installer - Flange Shaft T40164 all the way; when doing this, do not bend it.

-- Fill the space between the sealing- and dust lip half way with sealing grease.

-- Install the differential.

-- Install the front final drive cover with a new O-ring and tighten the bolts, refer to Figure.

Fig 5: Front Final Drive Cover - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Install the left flange shaft, refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .

-- Install the right flange shaft, refer to RIGHT FLANGE SHAFT, REMOVING AND INSTALLING .

-- Fill the transmission fluid (MTF).

Audi A4, A5, Q5, refer to Transmission Fluid .
Audi A6, A7, refer to Final Drive, Differential .