SEAT Workshop Service and Repair Manuals

Checking inner constant velocity joint Removing: The joint is to be dismantled to renew the grease if it is heavily soiled, and to check the running surfaces and the balls for wear and damage.

–  Swing ball hub and ball cage. –  Remove the casing of the seal in the direction of the arrow. –  Press balls out of cage.   Note Ball hub and joint body are paired. Do not interchange them.

–  Tip ball hub out of ball cage via ball track -arrows-. –  Check joint body, ball hub, ball cage and balls for pitting and traces of seizing. Excessive backlash in the joint will cause knocking or jolts under load change. In this case the joint must be replaced. Smoothing and traces of wear of the balls are no reason to renew the joint. Installing:

–  Insert hub into cage via the two chamfers. The hub can be installed in any position. Press balls into cage. The ball hub has two different distances between the ball sliding surfaces: one large and one small distance.

–  Place the hub with the cage and the balls vertically in the housing of the joint with a small distance -b- facing the open part of the joint. –  Observe the chamfer on the inside diameter of the ball hub: this must be visible after feeding in the ball hub:

–  Insert the ball hub by pivoting it; to do this, remove it from the cage -arrows- (as shown in the diagram).

–  Press hard on the cage -arrow- insert turning the ball hub.