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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crankshaft, Cylinder Block (Servicing - 6-Cylinder 2.9L; 3.0L 4V TFSI Ea839 Engine) >> 13 Crankshaft, Cylinder Block >> Cylinder Block, Transmission Side >> Crankshaft Seal, Replacing, Transmission Side >> Procedure

Crankshaft Seal, Replacing, Transmission Side: Procedure

Fig 1: Prying Out Crankshaft Seal Ring Using Extractor Lever T20143/2
GWWA13-0624Courtesy of AUDI OF AMERICA, LLC

-- Remove the drive plate. Refer to DRIVE PLATE, REMOVING AND INSTALLING .

-- Remove the sensor wheel. Refer to SENSOR WHEEL, REMOVING AND INSTALLING .

-- Pry out the seal using the Puller - Crankshaft/Power Steering Seal :T20143/2  .

-- Clean the contact and sealing surface.

Fig 2: Guide Piece T10122/6 And Push Shaft Seal
GWWA13-11119Courtesy of AUDI OF AMERICA, LLC

-- Place the Guide Piece to Crankshaft Seal Install Kit - Guide Piece :T10122/1  on the Seal Installer - Crankshaft - Guide Piece :T10122/6  and seal -A- with the closed side on the guide piece.

-- Remove the Guide Piece to Crankshaft Seal Install Kit - Guide Piece :T10122/1  .

-- Position the Crank Shaft Seal Installer - Guide Piece :T10122/6A  on the crankshaft.

Fig 3: Identifying Seal Installer - Crankshaft - Guide Piece T10122/6
GWWA13-11120Courtesy of AUDI OF AMERICA, LLC

-- Using the bolts -arrows- from the Guide Piece attach via the mounting point -A- on the crankshaft.

CAUTION:

Risk of damaging by folding over the sealing lip when installing.

Oil leaks possible.

- Install the seal by hand.

-- Push the seal onto the crankshaft by hand using the Crank Shaft Seal Installer - Guide Piece :T10122/6A  .

-- Press the seal in evenly all around using the Crankshaft Seal Installer Kit - Thrust Piece :T10122/5  .

Fig 4: Install Shaft Seal In Evenly All Around With Thrust Piece T10122/5 Until Flush
GWWA13-10937Courtesy of AUDI OF AMERICA, LLC

-- Remove the Crank Shaft Seal Installer - Guide Piece :T10122/6A  .

-- Check the seal as well as its sealing lip for correct seating. If the sealing lip is partially rolled back, repeat the procedure with a new seal.

-- Install the sensor wheel. Refer to SENSOR WHEEL, REMOVING AND INSTALLING .

-- Install the drive plate. Refer to DRIVE PLATE, REMOVING AND INSTALLING .