Left Seal, Replacing

Special tools and workshop equipment required

Puller - Camshaft Seal:3240
Seal Installer - Final Drive/Gearbox:T10139

A defective seal will allow gear oil to enter the transmission bell housing.

Requirements

General repair instructions. Refer to GENERAL REPAIR INFORMATION .
Guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

Procedure

-- Drain the transmission fluid. Refer to GEAR OIL, DRAINING AND FILLING, FRONT FINAL DRIVE, TRANSMISSION WITH SEPARATED OIL SYSTEM .

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

-- Remove the bolts from the front final drive cover in the following sequence: -11 to 1-.

Fig 1: Front Final Drive Cover - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Remove the front final drive cover together with the tapered roller bearing outer race and the shim.

The shim must be the correct size and must not be replaced by a shim with a different thickness.

-- Remove the differential -arrow-.

Fig 2: Identifying Differential

Courtesy of AUDI OF AMERICA, LLC

-- Remove the outer race for the differential tapered roller bearing -1- and the shim -2- located behind it from the transmission housing by hand.

Fig 3: Identifying Tapered Roller Bearing Outer Race For Differential & Shim

Courtesy of AUDI OF AMERICA, LLC

The shim must be the correct size and must not be replaced by a shim with a different thickness.

-- Remove the left flange shaft slightly from the transmission but do not remove completely. Refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .

-- Position the inner section of the :3240 flush with the outer section and lock the inner section using the knurled bolt.

Courtesy of AUDI OF AMERICA, LLC

-- Lubricate the puller threads, position, and using strong pressure insert the puller - camshaft seal as far as possible in the seal until the seal turns.

-- Turn the :3240 further and at the same time pull until the seal is removed.

-- Tension the :3240 on the flat side in a vise and remove the seal using pliers.

-- Check the seal in the transmission housing for damage and rework if necessary.

-- Clean the running and sealing surface.

-- Coat the outer circumference of the seal sealing lip with gear oil.

Fig 4: Driving In New Oil Seal As Far As Stop Using Thrust Piece T10139

Courtesy of AUDI OF AMERICA, LLC

Push the seal onto the thrust piece so that the projecting sealing lip of seal faces the :T10139 .

-- Install the new seal all the way.

-- Insert the shim -2- and the outer race -1- for the differential tapered roller bearing into the transmission housing by hand as far as the stop.

Fig 5: Identifying Tapered Roller Bearing Outer Race For Differential & Shim

Courtesy of AUDI OF AMERICA, LLC

-- Replace the O-ring -arrow-.

Fig 6: Differential Cover O-Ring

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-- Insert the differential into the transmission housing.

If the tapered roller bearing outer race and the shim have fallen out of the front final drive cover:

-- Lubricate the shim and tapered roller bearing outer race with gear oil and insert them into the front final drive cover as far as the stop.

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

-- Tighten the front final drive cover bolts. Refer to Figure.

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

-- Fill the transmission fluid and check the level. Refer to GEAR OIL, DRAINING AND FILLING, FRONT FINAL DRIVE, TRANSMISSION WITH SEPARATED OIL SYSTEM .