S4 Quattro Wagon V8-4.2L (BHF) (2008)
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Constant Velocity Joint: Testing and Inspection
Triple Roller Joint Outer Constant Velocity Joint Checking
Outer constant velocity (CV) joint, checking
In order to replace grease in case of strong soiling, joint must be disassembled or if journal surface of balls must be checked for wear and damage.
Removing
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Before disassembling mark ball hub position in relation to ball cage and housing using an electric scriber or oil stone.
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Swivel ball hub and ball cage.
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Remove balls one after another.
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Turn cage, until two rectangular windows - arrow - contact joint body.
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Lift out cage together with hub.
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Swing segment of hub into rectangular window of cage.
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Tilt hub out of cage.
6 balls for each joint belong to a tolerance group. Check stub axle, hub, cage and balls for small indentations (pitting) and signs of seizure. Excessive
backlash in the joint will cause knocking or jolts under load change. In such cases joint should be replaced. Flattening and running marks of balls are
no reason to replace joint.
Installing