Audi Workshop Service and Repair Manuals > A4 Mk1 > Power unit | 6-cylinder engine, 2.7 ltr. 5-valve turbo (RS4), mechanics | Engine cylinder head, valve gear | Servicing valve gear | Renewing oil seal for Hall sender and sealing cap

Renewing oil seal for Hall sender and sealing cap - cylinder head (left-side)

Procedure

Note

t	PTFE oil seals are matched to the direction of shaft rotation (see arrow on oil seal). Incorrect allocation to direction of rotation will result in oil leaks.

t	The direction of rotation of the oil seals at the front of the engine is “clockwise”-arrow 1-. The direction of rotation of the oil seals on the back of the engine is “anti-clockwise”-arrow 2-.

–	Remove cylinder head cover (left-side) → Chapter.

–	Remove Hall sender → Item and Hall sender rotor → Item.

–	Unscrew double bearing cap -arrows-.

–	Take out oil seal and sealing cap.

–	Clean running and sealing surfaces as well as contact surfaces of double bearing cap.

–	Apply a small amount of sealant to -hatched area- of double bearing cap; sealant → Parts catalogue.

–	Check that oil seal is correctly matched to direction of rotation before installing.

l	Direction of shaft rotation “anti-clockwise” (arrow on oil seal)

–	Fit oil seal and install double bearing cap.

–	Use assembly lever to press in sealing cap.

Note

The bearing cap can remain installed after removing engine when renewing oil seal and sealing cap. Procedure → Chapter.

Installation is carried out in the reverse order; note the following:

–	Install Hall sender rotor ring → Item and washer → Item.

–	Install Hall sender → Item.

–	Install cylinder head cover (left-side) → Chapter.

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