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Checking inner constant velocity joint > < Servicing outer constant velocity joint

A4 Mk2

Checking outer constant velocity joint
Checking outer constant velocity joint
The joint should be dismantled to renew dirty grease or for checking the balls and ball races for wear and damage.
   
Dismantling
–  Before dismantling, mark position of ball hub in relation to ball cage and joint body with an electric scriber or oil stone (arrow).
–  Swivel ball hub and ball cage.
–  Take out balls one after the other.
  A40-0172
–  Turn cage until two cage openings -arrow- are level with joint body.
–  Lift out cage together with hub.
  A40-0155
–  Swivel one segment of the hub into one of the cage openings.
–  Pivot hub out of cage.
Checking
The 6 balls in each joint belong to one tolerance group. Check stub axle, hub, cage and balls for pitting and signs of seizure. Excessive backlash in the joint will cause knocking or jolts under load change; in such cases the joint must be renewed. Polished areas and visible tracks in the ball races do not justify renewal of the joint.
Assembling
–  Fit cage with hub into joint body.
  Note
Make sure cage is inserted in correct position (i.e. sides facing in same direction as original position).
–  Press in balls one after the other from opposite sides, taking care to re-establish original position of hub relative to cage and joint body.
–  Pack grease into joint body; refer to → Anchor for quantity and type of grease.
  A40-0156

Checking inner constant velocity joint > < Servicing outer constant velocity joint