Audi A4 Owners & Service Manuals

Audi A4: Overview - Drive Axle

Overview - Drive Axle

1 - Cap

  • Carefully drive off using a drift
  • Replace if damaged
  • Adhesive surface must be free of oil and grease
  • Coat the sealing surface with Sealant -D 454 300 A2- before installing on CV joint.

2 - Circlip

  • Replace after removing
  • Insert in shaft groove

3 - Inner CV Joint

  • Only replace completely
  • Checking using the Vehicle Diagnostic Tester. Refer to → Chapter "Inner CV Joint, Checking".
  • Grease quantity and type.
  • The adhesive surfaces must be free of oil and grease.
  • When installing the CV joint, thinly coat the profile shaft splines with the grease used in the joint.

4 - CV Boot

  • Without vent hole
  • Remove the cap carefully using a drift.
  • Check for tears and scuffing
  • Check the inner CV joint for damage. Refer to → Chapter "Inner CV Joint, Checking".
  • The metal cap/CV joint sealing surfaces must be free of grease when installing.

5 - Backing Plate

6 - Bolts

  • M8: 30 Nm +90º
  • M10: 50 Nm + 90º
  • Replace after removing

7 - Clamp

  • Replace after removing
  • Tensioning. Refer to → Fig. "Tension the Clamp using the Clamping Pliers -VAG1682A-".

8 - Drive Axle

  • Removing and installing. Refer to → Chapter "Drive Axle, Removing and Installing".

9 - Clamp

  • Replace after removing
  • Tensioning.

10 - CV Boot

  • Without vent hole
  • Check for tears and scuffing
  • Check the outer CV joint for damage. Refer to → Chapter "Outer CV Joint, Checking".
  • The outer CV boot/metal cap sealing surfaces must be free of grease when installing
  • The CV boot/drive axle sealing surfaces must be free of grease when installing

11 - Clamp

  • Replace after removing
  • Tensioning. Refer to → Fig. "Tension the Clamp using the Clamping Pliers -VAG1682A-".

12 - Circlip

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

13 - Outer CV Joint

  • Only replace completely
  • Checking using the Vehicle Diagnostic Tester. Refer to → Chapter "Outer CV Joint, Checking".
  • Removing. Refer to → Chapter "Drive Axle, Disassembling and Assembling, Outer CV Joint".
  • Installing: Drive onto shaft with a plastic mallet until compressed circlip rebounds.
  • Circlip must lie in joint chamfer when guiding in, guide with pliers if necessary.
  • Grease quantity and type.
  • The CV boot/outer CV joint sealing surfaces must be free of grease when installing.
  • When installing the CV joint, thinly coat the profile shaft splines with the grease used in the joint.

14 - Bolt

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

Heat Shield - Tightening Specification

- Tighten the heat shield bolts to 23 Nm.

A42-10798

Tension the Clamp using the Clamping Pliers -VAG1682A-.

- Attach the Clamping Pliers -VAG1682- as shown.

  • The jaws on the pliers must be centered -arrow- on the clamp -2-.

  Note

  • The spindle threads must turn easily. If necessary, coat with MoS2 lubricating grease.
  • If difficult to tighten, for example because of dirty threads, the proper clamping force of the clamping sleeve will not be reached even when tightened to the specification.

- Tension the clamp by turning the spindle -1- with the torque wrench. Do not tilt the clamping pliers during this.

  • Tightening specification: 20 Nm.

A40-10501

Grease Quantity and Type

  Note

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

Grease Quantity and Type

1) Apply grease through the ball races.

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