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 .