A8 Quattro Sedan V8-4.2L (AUX) (2001)
Vehicle Speed Sensor: Service and Repair
Impulse Wheel
NOTE: The following special tools and testing equipment are necessary for this work:
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VW 401 - Pressure plate
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VW 402 - Pressure plate
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VW 412 - Thrust disc
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VW 415 A - Tube
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32-109 - Driving sleeve
Removal
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Remove left drive flange, refer to Transmission and Drivetrain.
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Remove circlip (arrow -A-) for ball bearing.
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Place left drive flange bracket on pressure plates VW 401 and VW402 and press drive flange out of bracket using thrust disc VW 412.
CAUTION: Hold the drive flange with one hand to prevent it from falling.
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Remove impulse wheel for speedometer VSS -G22- from drive flange or bracket.
Installation
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Install impulse wheel for VSS -G22- (arrow) on drive flange and check installation position.
NOTE:
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The driver on the impulse wheel must engage in the groove of the drive flange.