Front Drive Axle With 100 mm Dia. Inner Constant Velocity Joint

Checking inner constant velocity joint
The joint should be dismantled to replace dirty grease or for checking the balls and ball tracks for wear and damage.

Dismantling

Note:
^ Ball hub and joint are paired and must be marked before dismantling. Ensure the balls run in the same tracks after assembly.





- Swivel ball hub and ball cage.
- Push out joint in direction of arrow.
- Push balls out of cage.





- Align ball hub with cage as shown - arrows - and pivot hub out of cage.
- Check joint, ball hub, ball cage and balls for pitting and signs of seizure.

Note:
^ Excessive backlash in the joint will cause knocking or jolts under load change. In such cases the joint must be replaced. Polished areas and ball track marks are not a reason for changing the joint.

Assembling





- Insert hub into cage via the two chamfers. No specific installation position is required. Push balls into cage.
- Insert hub with cage and balls at a right angle to the joint.





^ When inserting, ensure that the wide spacing - a - on the joint body is aligned with the narrow spacing - b - on the hub after swivelling in.

^ Chamfer on internal diameter of ball hub (splines) must face drive shaft.





- Swivel the hub into the joint body; at the same time the hub must be swiveled out of the cage - arrows - far enough to allow the balls to fit into the ball tracks.





- Swivel in the hub with balls by applying firm pressure on the cage - arrow -.

Checking function of constant velocity joint:
The constant velocity joint has been correctly assembled if the ball hub can be moved by hand backwards and forwards over its entire axial adjustment range.