Inner Constant Velocity Joint, Checking

Inner constant velocity joint, checking
Joint must be disassembled when very dirty. Grease must be replaced or if contact surfaces of balls are to be checked for wear or damage.

Disassembling

Note: Ball hub and joint element are paired and must be marked before removal. Take care not to get ball races mixed up.





- Swivel ball hub and ball cage and pull out of joint element in direction of arrow.
- Press balls out of cage.





- Tilt ball hub over ball race race (arrows) and remove from ball cage.

Checking
- Check joint element, ball hub, ball cage and balls for pitting and score grooves.

Note: Excessive torsional play in the joint becomes apparent through load change jolts. If this occurs, replace joint. The joint does not have to be replaced if balls display smooth spots and tracks.

Assembling





- Insert ball hub into ball cage via two chamfers. Installation position is optional. Press balls into cage.
- Insert hub with cage and balls edgewise into joint element.





Note: On insertion make sure that the wide gap -a- on joint element is aligned with narrow gap -b- on hub after hub has been swiveled to correct position.





- Swivel ball hub into position by swiveling hub out of cage (arrows) until balls have spacing of ball races.





- Swivel hub and balls into position by pressing cage hard (arrow).

Checking function of constant velocity joint:
The constant velocity joint has been correctly assembled when the ball hub can be pushed to and fro by hand along the entire length compensation distance.