Inner CV Joint, Checking

Inner CV Joint, Checking

It is necessary to disassemble the joint whenever replacing the grease or if the ball surfaces show wear or damage.

• Ball hub and joint piece are paired. Before removing, mark in relation to each other using a waterproof felt-tip pen.

Removing

- Swivel the ball hub and ball cage.






- Remove the joint in direction of arrow.

- Remove the balls from the cage.

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






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

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

Installing

Install in reverse order of removal. Note the following:

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






- Insert hub with cage and balls upright into joint piece.

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






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

• Use the felt-tip pen markings made during removal to help with installation.

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






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






CV joint, checking for function:

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