SEAT Workshop Service and Repair Manuals

Checking inner constant velocity joint Removal: 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. –  Push out joint body in direction of arrow. –  Press balls out of cage.   Note Ball hub and joint body are paired. Do not interchange.

–  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. Installation

–  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.

–  Insert hub complete with cage and balls into joint body, making sure that a smaller gap -b- faces open side of joint body. –  Also make sure that chamfer on inner circumference of ball hub is visible after swinging it into place.

–  Swing ball hub into place by swinging hub out of cage as shown in figure -arrows-.

–  Swivel in the hub with balls by applying firm pressure on the cage -arrow-. –  Checking function of constant velocity joint The constant velocity joint is correctly assembled if the ball hub can be moved by hand backwards and forwards over its entire range of axial movement.