Inner Constant Velocity Joint

Inner constant velocity joint, checking
The joint should be dismantled to replace dirty grease and when checking the balls and ball tracks for wear and damage.





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

Notes: The ball hub and joint are paired and should be marked before dismantling. Make sure that the ball tracks are matched up correctly.





- Tilt ball hub out of ball cage over ball track (arrows). Check joint housing, ball hub, ball cage and balls for indentations (pitting) and signs of seizure.

Notes: Excessive backlash in joint will be noticed as a knock during load changes. In such cases, the joint must be replaced. Polished areas and ball track marks are not a reason for changing the joint.

Installing





- Insert ball hub over both chamfers into the ball cage. The hub can be installed in any position. Press balls into the cage.
- Insert hub with cage and balls at right angle to the joint.





Notes: When inserting ensure that the wide spacing - a - on joint housing is aligned with the narrow spacing - b - on the hub after swiveling in.





- Swivel in ball hub, whereby hub must be swiveled out of cage (arrows) far enough to allow the balls to fit into ball tracks.





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

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