Inner CV Joint, Checking

Inner CV Joint, Checking

The joint must be disassembled to replace dirty grease or for checking the balls and ball tracks for wear and damage.

Disassembling

• Ball hub and joint are paired and should be identified before removal. Do not interchange cage allocation.

- Swing ball hub and ball cage.






- Press joint piece out 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.

Assembling






- 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 wheel hub (splines) must face toward drive axle.

- 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 -.






Checking the Functionality of the CV Joint

The CV joint is correctly assembled when the ball hub can be moved by hand backward and forward over its entire axial movement range.

- Press grease into joint body.

Grease capacities and types, drive axle with 108 mm inner CV joint, refer to => [ Grease Quantity and Type ] Drive Axle Overview, With 88 mm Diameter Outer CV Joint and 100 mm Diameter Inner CV Joint.