Audi A4: 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".

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.

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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