Audi AMB Service Manual page 475

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 192: Identifying A PTFE Seal (Teflon) & Inner Coil Spring Type Seal
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Distinguishing features: Conventional shaft oil seal has just one sealing lip - arrow 1 - which is pressed
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against sealing surface by a ring spring.
PTFE oil seal has a thread-like sealing surface - arrow 2 - , but no ring spring.
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The sealing surface of the PTFE oil seal must not be stretched during installation. Consequently, the
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PTFE oil seal must not be inserted using the guide sleeve used for oil seals with ring spring.
PTFE oil seals must be installed according to the direction of shaft rotation (see - arrow - markings on oil
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seal). Incorrect direction of rotation results in oil leakage.
Installing PTFE oil seal
Fig. 193: Checking Chamfer Edge On End Of Intake Camshaft For Burrs Or Sharp Areas
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Check chamfer edge - arrow - on end of intake camshaft for burrs or sharp areas.
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If necessary smooth edges using an oil stone.
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NOTE:
Do not oil sealing lip of oil seal.
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Carefully push PTFE oil seal onto end of shaft by hand.
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2005 Audi A4 Quattro
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