Audi A4: Differential

Overview - Differential

1 - Left Flange Shaft Seal

• Replacing. Refer to → Chapter "Left Seal, Replacing".

2 - Shim

• Behind the taper roller bearing outer race

3 - Taper Roller Bearing Outer Race

4 - Front Differential

5 - Bolt

• Tightening specification and sequence. Refer to → 7-Speed Dual Clutch Transmission 0CK; Rep. Gr.39; Differential; Overview - Differential.

6 - Circlip

• Replacing

7 - Right Flange Shaft

• Removing and installing. Refer to → 7-Speed Dual Clutch Transmission 0CK; Rep. Gr.39; Differential; Right Flange Shaft, Removing and Installing.

8 - Right Flange Shaft Seal

• Replacing. Refer to → 7-Speed Dual Clutch Transmission 0CK; Rep. Gr.39; Seals; Right Seal, Replacing.

9 - Final Drive Cover

• Removing and installing. Refer to → Chapter "Left Seal, Replacing".

10 - O-Ring

• Replace after removing.

11 - Shim

• Behind the taper roller bearing outer race

12 - Taper Roller Bearing Outer Race

13 - Left Flange Shaft

• Removing and installing. Refer to → 7-Speed Dual Clutch Transmission 0CK; Rep. Gr.39; Differential; Left Flange Shaft, Removing and Installing.

14 - Bolt

• Tightening specification: 10 Nm + 90º
• Quantity: 3

15 - Gear Carrier

• Attached to the left flange shaft with the bearing -item 16- and the circlip -item 17-

16 - Bearings

• For the left flange shaft

17 - Circlip

• for the left flange shaft bearing

Final Drive Cover - Tightening Specification and Sequence

- Tighten the bolts in steps according to the specified sequence:

Left Flange Shaft, Removing and Installing

Special tools and workshop equipment required

• Engine and Gearbox Jack -VAS6931-
• Sealing Grease. Refer to the Parts Catalog.

Removing

• The transmission is installed.

- Remove the bolts -arrows- from the flange shaft mounting bracket.

- Remove the lower cover -arrow- from the transmission.

  WARNING

Risk of damaging the seal between the final drive and the transmission housing when removing the flange shaft.

• If the flange shaft -arrow- is not held in a central position, the seal on the flange shaft spline will be damaged.
• A seal must be replaced if it is damaged.

- To avoid damaging the seal, support and guide the flange shaft out of the opening in the transmission.

- Remove the left flange shaft from the transmission in direction of -arrow A-.

  Note

Ignore -items 1 and 3- and -arrow B-.

Installing

Install in the reverse order of removal while noting the following:

  Note

Replace the bolts that were tightened with an additional turn.

  WARNING

Risk of damaging the seal between the final drive and the transmission housing when installing the flange shaft.

• If the flange shaft -arrow- is not held in a central position, the seal on the flange shaft spline will be damaged.
• A seal must be replaced if it is damaged.

- To avoid damaging the seal when inserting the flange shaft, support and guide the flange shaft into the opening in the transmission.

- Slide the left flange shaft -2- into the transmission in direction of -arrow B-. When doing this, insert the flange shaft centrally into the seal on the front differential -arrow 3-.

Tightening Specification

• Refer to → Chapter "Overview - Differential"
• Upper control arm and coupling rod. Refer to → Suspension, Wheels, Steering; Rep. Gr.40; Upper Control Arm; Overview - Suspension Strut, Upper Control Arm.
• Drive Axle. Refer to → Suspension, Wheels, Steering; Rep. Gr.40; Drive Axle; Overview - Drive Axle.

Right Flange Shaft, Removing and Installing

Description of the procedure. Refer to → 7-Speed Dual Clutch Transmission 0CK; Rep. Gr.39; Differential; Right Flange Shaft, Removing and Installing.

Special Tools

Special tools and workshop equipment required

• Puller - Flanged Shaft -T10037-

• Seal Installer - Flange Shaft -T40164-

• Engine and Gearbox Jack -VAS6931-
• Sealing Grease -G 052 128 A1-

Revision History

DRUCK NUMBER: A005AI0721

READ NEXT: