A8L Quattro Sedan V8-4.2L (AUX) (2001)
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Disconnect electrical harness connector -arrow- at camshaft position (CMP) sensor 2 -G163-
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Remove housing for Hall sensor.
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Remove washer and cover for Hall sensor.
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Rotate crankshaft at mounting bolt for toothed belt sprocket counterclockwise approximately 45° so that no pistons stand at TDC.
Important!
Verify camshaft TDC position again:
- The two camshaft markings must align with both -arrows- on bearing caps. -
When reusing the old drive chain:
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Clean the drive chain and camshaft chain sprockets across from both arrows on the bearing caps and mark installed position with a color
marking.