Audi A4 Owners & Service Manuals

Audi A4: Overview - Drive Axle

Audi A4 (B9) 2016-2025 Service Manual / Chassis / Front Suspension / Drive Axle / Overview - Drive Axle

Overview - Drive Axle

1 - Clamp

  • Replace after removing
  • Tensioning. Refer to → Chapter "Clamp on Triple Roller Joint and Outer Joint, Tensioning".

2 - CV Boot

  • If the drive axle has a peened triple roller joint, then the triple roller joint has an adapter installed
  • The CV boot must fit in the groove and on the joint contour.

3 - Clamp

  • Replace after removing
  • Tensioning. Refer to → Chapter "Clamp on Triple Roller Joint and Outer Joint, Tensioning".

4 - Circlip

  • Replace after removing
  • Insert into ring groove of shaft before installation (not visible on installed joint)
  • Before installing CV joint, align the circlip in the center with opening facing upward.

5 - Outer CV Joint

  • Completely replace
  • Removing.
  • Checking using the Vehicle Diagnostic Tester. Refer to → Chapter "Outer CV Joint, Checking".
  • Installing.
  • Lubricating.
  • Before installing the CV joint, thinly coat the profile shaft splines with the grease used in the joint.

6 - Bolt

  • Replace after removing
  • Clean the threads in the CV joint with for example a thread tap.
  • Drive axle threaded connection, loosening and tightening. Refer to → Chapter "Drive Axle Threaded Connection, Loosening and Tightening".

7 - Clamp

  • Replace after removing
  • Tensioning. Refer to → Chapter "Clamp on Triple Roller Joint and Outer Joint, Tensioning".

8 - CV Boot

  • Check for tears and scuffing
  • 9 - Clamp
  • Replace after removing
  • Tensioning. Refer to → Chapter "Clamp on Triple Roller Joint and Outer Joint, Tensioning".

10 - Drive Axle

  • Different versions:
  • Triple roller joint AAR 2600 i with an outer CV joint with 85.2 mm diameter.
  • Triple roller joint AAR 3300 i with an outer CV joint with 94 mm or 98.9 mm diameter.
  • Triple roller joint AAR 3700 i with an outer CV joint with 102.7 mm diameter.
  • Allocation. Refer to the Parts Catalog.
  • Removing and installing. Refer to → Chapter "Drive Axle, Removing and Installing".
  • Triple roller joint allocation. Refer to → Fig. "Triple Roller Joint Allocation".
  • Drive axle, disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling".

11 - Circlip

  • Replace after removing
  • Insert in shaft groove

12 - Triple Roller Star

  • Mark the installed position for reinstallation.
  • Disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling".
  • Before installing the triple roller star, thinly coat the profile shaft splines with the grease used in the joint.

13 - Circlip

  • Replace after removing
  • Insert in shaft groove

14 - Bolt

  • M10: 50 Nm + 90º
  • M12: 90 Nm + 90º
  • Replace after removing

15 - Joint

  • Disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling".

Triple Roller Joint Allocation

- Determine the dimension -A- with the clamps open and the CV boot pushed back.

  • Dimension -A- = approximately 74 mm: drive axle with triple roller joint AAR 2600 i

- Drive axle with Triple Roller Joint AAR 2600 i, disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling, Triple Roller Joint AAR 2600 i and AAR 3300 i".

  • Dimension -A- = approximately 77 mm: drive axle with triple roller joint AAR 3300 i

- Drive axle with Triple Roller Joint AAR 3300 i, disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling, Triple Roller Joint AAR 2600 i and AAR 3300 i".

  • Dimension -A- = approximately 82 mm: drive axle with triple roller joint AAR 3700 i

- Drive axle with Triple Roller Joint AAR 3700 i, disassembling and assembling. Refer to → Chapter "Drive Axle, Disassembling and Assembling, Triple Roller Joint AAR 3700i".

A40-10050

Grease Quantity and Type

  • Grease joint again when replacing CV boot.
  • Pay attention to the grease type for the outer and inner joint. Refer to the Parts Catalog.

Grease Quantity and Type

1)  This amount goes into the joint through the inner splines on the ball hub. Apply the remainder on the front side of the joint under the boot.

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