Inner CV Joint, Checking

Inner CV joint, checking
In order to replace the grease due to contamination or if the ball tracks must be checked for wear and damage, the joint must be disassembled.

Disassembly of suspension strut

Note: Ball hub and joint piece are paired for identification before removing. Do not interchange the track allocation.





- Turn ball hub and ball cage and remove from joint piece in direction of arrow.
- Press balls out from cage.





- Flip out ball hub from ball cage via the running path of ball (arrows).

Checking
- Check joint piece, ball hub, ball cage and balls for small broken off depressions (pitting build-up) and chafing.

Note: Excessive circumferential backlash in joint makes itself noticed via tip-in shock. Joint must be replaced in such cases. Flattening and running marks of the balls are no reason to replace the joint.





Assembly of suspension strut
- Insert ball hub into ball cage via two chamfers. Installation position is at random. Press balls into cage.
- Insert hub with cage and balls upright into joint piece.





Note: When inserting, make sure that in each case the wide gap -a- at joint piece contacts narrow gap -b- at hub after swinging in.





- Swing in ball hub and swing out hub far enough from cage (arrows) so that balls have distance of running paths.





- Swing in hub with balls by pressing forcefully onto cage (arrow).

Check constant velocity joint for function:
The constant velocity joint is properly assembled if the ball hub can be slid back and forth by hand over the whole compensation length.