A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
Constant Velocity Joint: Testing and Inspection
Front Drive Axle With 108 mm Dia. Inner Constant Velocity Joint
Inner constant velocity joint, checking
In order to replace the grease due to contamination or if the ball tracks must be checked for wear and damage, the joint must be disassembled.
Disassembling
Note:
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Bag hub and joint are paired and must be marked before disassembling. Make sure the balls run in the same tracks after assembly.
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Swivel ball hub and ball cage and pull joint body out in direction of - arrow
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Press balls out of cage.
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Align ball hub with cage as shown - arrows - and pivot hub out of cage.
Checking
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Check joint, ball hub, ball cage and balls for pitting and signs of seizure.
Note:
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Excessive backlash in the joint will cause knocking or jolts under load change. In such cases the joint must be replaced. Polished areas and bag
track marks are not a reason for replacing the joint
Assembling
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Insert ball hub into cage via the two chamfers. No specific installation position is required. Press balls into cage.
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Insert hub with cage and balls at a right angle to the joint.