Inner Constant Velocity (CV) Joint, Checking

Inner Constant Velocity (CV) joint, checking
The CV joint should be disassembled to replace dirty grease or for checking the balls and ball tracks for wear and damage.





- Swing ball hub and ball cage.
- Press out CV joint in direction of - arrow -.
- Press balls out of cage.

Note: Ball hub and joint are paired and must be marked before disassembling. Make sure the balls run in the same tracks after assembly.





- 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.

Installing





- 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.





Note: When inserting, make that the wide spacing - a - on the joint body is aligned with the narrow spacing - b - on the hub after swinging in





- Swing in ball hub; at the same time the hub must be pressed out of the cage - arrows - far enough to allow the balls to fit into the ball tracks.





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

Checking function of constant velocity joint:
The constant velocity joint is correctly assembled if the ball hub can be moved by hand backward and forward over its entire range of axial movement.