Left Seal, Replacing

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NOTE:

A defective shaft seal will allow gear oil to enter the torque converter bell housing.

Special tools and workshop equipment required

Used Oil Collection and Extraction Unit VAG1782
Puller - Seal LeverVW681
Seal Installer - Final Drive/Gearbox T10139

Procedure

Transmission removed and mounted to the engine/transmission holder, refer to SECURING ON ENGINE AND TRANSMISSION HOLDER .

NOTE:

Clean working conditions for the automatic transmission, refer to CLEAN WORKING CONDITIONS, GUIDELINES .

General repair instructions, refer to GENERAL REPAIR INFORMATION .

CAUTION:

Danger of causing damage to the transmission.

Do not place the transmission on the ATF pan.

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

-- Drain the front final drive gear oil, by opening drain plug -arrow B-.

Fig 1: Identifying Drain Plug Front Final Drive

Courtesy of AUDI OF AMERICA, LLC

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

-- Install the drain plug -arrow B- and tighten it, refer to OVERVIEW - DRAIN AND INSPECTION PLUGS FOR GEAR OIL .

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

Fig 2: 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 adjustment shim.

NOTE:

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

-- Remove the differential -arrow-.

Fig 3: 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 4: Identifying Tapered Roller Bearing Outer Race For Differential & Shim

Courtesy of AUDI OF AMERICA, LLC

NOTE:

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

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

Fig 5: Pulling Out Oil Seal

Courtesy of AUDI OF AMERICA, LLC

-- Remove shaft seal.

NOTE:

The extractor lever must be positioned behind both sealing lips on the shaft seal. Do not position at outer circumference of shaft seal, otherwise the contact surface in transmission housing will be damaged. Guide the release lever carefully while prying out.

-- Examine shaft seal seat in transmission housing for damage; if necessary rework.

-- Coat the outer circumference and sealing lip of shaft seal with axle oil.

NOTE:

Push shaft seal onto pressure piece so that the projecting sealing lip of seal faces the tool.

-- Drive on in new shaft seal as far as stop.

Fig 6: Driving In New Oil Seal As Far As Stop Using Thrust Piece T10139

Courtesy of AUDI OF AMERICA, LLC

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

Fig 7: Identifying Tapered Roller Bearing Outer Race For Differential & Shim

Courtesy of AUDI OF AMERICA, LLC

-- Replace the O-ring -arrow-.

Fig 8: Differential Cover O-Ring

Courtesy of AUDI OF AMERICA, LLC

-- 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.

-- Tighten the front final drive cover bolts, refer to Figure.

Fig 9: 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 .

-- Add axle oil to the transmission after repair, refer to GEAR OIL, DRAINING AND FILLING .