Audi Q7 Owners & Service Manuals

Audi Q7: Left Seal, Replacing

Left Seal, Replacing, 0DB, 0D2

Special tools and workshop equipment required

  • Slide Hammer Set -VW771-
  • Bearing/Bushing Installer - Multiple Use -VW295-
  • Seal Installer - Double Radial Oil Seal -T40127/1-
  • Sealing Grease -G 052 128 A1-

  Caution

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

  • Circlip - Left Flange Shaft to Rear Final Drive
  • The rear final drive is removed. Refer to → Chapter "Final Drive, Removing and Installing".

- Follow all general repair information. Refer to → Chapter "Repair Information".

- Drive out the left flange shaft with the Slide Hammer Set -VW771-.

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- Use a suitable tool to pry out the seal.

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- Coat outer edge of the seal with gear oil.

- Fill the space between the sealing/dust lip halfway with Sealing Grease -G 052 128 A1-.

- Install the new shaft seal with Seal Installer - Double Radial Oil Seal -T40127/1- all the way. Do not the tilt the shaft seal while doing so.

A39-10847

- Clamp the flange shaft in a vise with protective jaws.

- Remove the old circlip.

- Insert a new circlip -A- using Pliers in the groove on the flange shaft at the same time do not stretch the circlip.

A39-0402

- Drive the flange shaft in using a - VW295-.

- Install the rear final drive. Refer to → Chapter "Final Drive, Removing and Installing".

- Check the rear final drive gear oil. Refer to → Chapter "Gear Oil, Checking Level".

A39-10798

Right Seal, Replacing

Right Seal, Replacing, 0DB, 0D2

Special tools and workshop equipment required

  • Slide Hammer Set -VW771-
  • Bearing/Bushing Installer - Multiple Use -VW295-
  • Seal Installer - Double Radial Oil Seal -T40127/1-
  • Sealing Grease -G 052 128 A1-

  Caution

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

  • Circlip - Right Flange Shaft to Rear Final Drive
  • The rear final drive is removed. Refer to → Chapter "Final Drive, Removing and Installing".

- Follow all general repair information. Refer to → Chapter "Repair Information".

- Drive out the left flange shaft with the Slide Hammer Set -VW771-.

A39-10795

- Use a suitable tool to pry out the seal.

A39-0373

- Coat outer edge of the seal with gear oil.

- Fill the space between the sealing/dust lip halfway with Sealing Grease -G 052 128 A1-.

- Install the new shaft seal with -T40127/1- all the way. Do not the tilt the shaft seal while doing so.

A39-10846

- Clamp the flange shaft in a vise with protective jaws.

- Remove the old circlip.

- Insert a new circlip -A- using Pliers in the groove on the flange shaft at the same time do not stretch the circlip.

A39-0402

- Drive the flange shaft in using a - VW295-.

- Install the rear final drive. Refer to → Chapter "Final Drive, Removing and Installing".

- Check the rear final drive gear oil. Refer to → Chapter "Gear Oil, Checking Level".

A39-10798

Input Shaft Seal, Replacing

Input Shaft Seal, Replacing, 0DB, 0D2

Special tools and workshop equipment required

  • Puller - Multiple Use -VW391-
  • Slide Hammer Set - Adapter 40 - VW771/40- from the Slide Hammer Set - VW771-
  • Puller - Unit Injector -T10055-
  • Seal Installer - Hollow Shaft -T10380-
  • -2-Puller - Unit Injector - Adapter 2 -T10055/2-
  • Seal Installer - Input Shaft - Guide Sleeve -T40222/1-
  • Inductive Heater -VAS6414-

or

  • Commercially Available Hotplate with Digital Thermometer -VAS6519-
  • Used Oil Collection and Extraction Unit -SMN372500-
  • Sealing Grease -G 052 128 A1-
  • Two M 8 x 30 Bolts

  Caution

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

  • Circlip for Flange/Driveshaft

Removing

  • The rear final drive is removed.
  • Pay attention to the general repair information. Refer to → Chapter "Repair Information".

- Place the vehicle on a hoist.

Audi Q7

- Remove the center underbody trim panel. Refer to → Body Exterior; Rep. Gr.66; Underbody Trim Panel; Underbody Trim Panels, Removing and Installing.

A66-11481

- Remove the bolts -arrows- and the crossmember -1-.

A66-11516

  NOTICE

Incorrect handling can damage the coupling.

 - Do not bend the coupling more than 10º.

 - Do not load the coupling.

- Loosen the lock washer(s) -arrows- and separate the exhaust system.

- Tie up the front exhaust pipe(s) on the side to the underbody.

A26-10538

Audi A4

- Remove the rear section of the exhaust system. Refer to → Rep. Gr.26; Exhaust Pipes/Mufflers; Overview - Muffler.

Continuation for All Vehicles

- Remove the driveshaft on the rear final drive. Refer to → Chapter "Drive Shaft, Removing from Rear Final Drive and Installing".

- Tie the driveshaft to the side.

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- Remove the High Temperature Grease in the flange/driveshaft.

- Remove the circlip -arrow-.

  • Replace the circlip with a new one of the same thickness if it is stretched or damaged. Allocation. Refer to the Parts Catalog.

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- Mark the position of the flange/driveshaft -B- on the pinion -A--arrow-.

  • This marking -arrow- is needed so the colored dot -C- on the outer flange remains in its original position.
  • This ensures the imbalance in the rear final drive will be as small as possible.

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- Secure the -VW391- with Two M 8 x 30 Bolts-arrow- on the flange/driveshaft.

- Remove the flange/driveshaft with the - VW391-.

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- Place the -SMN372500- underneath.

- Knock through the metal ledge of the shaft seal -A-, for example, with a scriber -B- in the direction of -arrow-.

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- Then install a bolt -arrow- in this shaft seal opening -A-.

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- Remove the shaft seal -A- for the flange/driveshaft over the bolt -B- in the direction of -arrow-.

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Installing

Install in reverse order of removal. Note the following:

- Fill the space between the sealing/dust lip halfway with Sealing Grease -G 052 128 A1-.

- Place the new shaft seal -A- on the -T40222/1-.

Tip:

  • Make sure the shaft seal spring is in its installation position behind the sealing lip.

- Coat outer edge of the seal with gear oil.

- Push the -T40222/1- and the shaft seal -A- onto the pinion -B-.

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- Push in the new shaft seal to the "installation dimension" using the -T40222-.

Seal Installation Dimension on Final Drive 0DB:

  • 25.5 mm +- 0.3 under housing outer edge

Seal Installation Dimension on Final Drive 0D2:

  • 24.0 mm +- 0.3 under housing outer edge

- Remove the -T40222- and -T40222/1-.

  CAUTION

Hot components.

Burning of hands is possible.

 - Wear safety gloves.

 - If using a Heating Plate the temperature must be observed using a -VAS6519-.

A39-10793

- Warm the flange/driveshaft -B- with a -VAS6414- or a Heating Plate to 115 ºC (239 ºF).

- Position the flange/driveshaft -B- on the pinion -A- so that the mark -arrow- is in a straight line.

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- Install the flange/driveshaft with the -T10380-.

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Install the circlip -1- as follows:

  • Always replace the circlip -1-.
  • The bevel on the inner diameter of the circlip -arrow A- faces out, toward the driveshaft.
  • The wide tab on the circlip -arrow B- must be on the right side, as shown.

Note the following When Replacing the Flange/Driveshaft

  • The locking ring -1- must be determined again.
  • For this, determine and insert the thickest locking ring -1- that can still be installed in the groove. Refer to the Parts Catalog for the part number.

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- Attach the driveshaft to the rear final drive. Refer to → Fig. "Install the Driveshaft on the Rear Final Drive.".

- Check the rear final drive gear oil. Refer to → Chapter "Gear Oil, Checking Level".

- Install the crossmember. Refer to → Body Exterior; Rep. Gr.66; Underbody Trim Panel; Overview - Underbody Trim Panels.

- Assemble the exhaust system. Refer to → Rep. Gr.26; Exhaust Pipes/Mufflers; Overview - Muffler.

A39-10788

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