Inner CV Joint, Checking

Inner CV Joint, Checking

Removing

In order to replace grease in case of contamination of if the journal surfaces and ball bearings must be checked for wear and damage, the inner Constant Velocity (CV) joint must be disassembled.

- Swing the ball hub and ball cage.





- Press out the ball joint housing in - direction of arrow -.

- Press the ball bearings out of the cage.

• Ball hub and joint piece are paired. Do not interchange.

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





- Check joint piece, ball hub, ball cage and ball bearings for small broken off depressions (pitting buildup) and chafing.

Excessive circumferential backlash in the joint makes itself noticed via tip in shock. Joint must be replaced in such cases. Flattening and running marks on the ball bearings are no reason to replace joint.

Installing

- Insert the ball hub into the ball cage via two chamfers. The installation position is random. Press the ball bearings into the cage.





There are 2 different distances between the ball tracks of the ball hub, a larger and a smaller one.

- Insert the hub with the cage and ball bearings upright into the joint piece.

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





Chamfer on inner diameter of ball hub (splines) must face large diameter of joint piece.

- Also observe chamfer on inner diameter of ball hub which must be visible after swinging in.

- Swing in the ball hub, to do so swing out hub far enough from cage - arrows - so that the ball bearings have the distance of the running paths.





- Swing in the hub with the ball bearings by pressing forcefully onto cage - arrow -.





CV Joint, Checking for Function

The CV joint is properly assembled, if the ball hub can be slid back and forth by hand over the whole compensation length.