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






- Swing ball hub and ball cage.

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

- Press balls out of 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 build-up) and chafing.

• Excessive backlash in joint will be noticed as a knock during load changes. Joint must be replaced in such cases. Flattening and running marks of balls are no reason to replace joint.

Installing

Installation is the reverse of removal, with special attention to 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 this 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.