Left Seal, Replacing: Procedure

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

The transmission is removed and mounted to the engine/transmission holder. Refer to SECURING ON ENGINE AND TRANSMISSION HOLDER .

CAUTION:

Transmission components could be damaged if they are not set down correctly.

Do not place the transmission on the Automatic Transmission Fluid (ATF) cooler or oil pan.

NOTE:

General repair instructions. Refer to GENERAL REPAIR INFORMATION .

Pay attention to clean working conditions for the transmission. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

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

Fig 1: Identifying Drain Plug From Front Final Drive

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-- Remove the right flange shaft. Refer to Removing .

-- Install the drain plug -arrow B- and tighten it.

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

Fig 2: Front Final Drive Cover - Tightening Specifications And Sequence

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-- 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, Removal/Installation

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-- 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

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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 Removing .

Fig 5: Pulling Out Oil Seal

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-- Remove shaft seal.

NOTE: Extractor lever must be positioned behind both sealing lips of 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 outer circumference and sealing lip of shaft seal with axle oil.

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

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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.

-- 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

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-- Replace the O-ring -arrow-.

Fig 8: 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.

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

Fig 9: Front Final Drive Cover - Tightening Specifications And Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Install the left flange shaft. Refer to Installing .

-- Install the right flange shaft. Refer to Installing .

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