A4 Sedan L4-2.0L Turbo (BPG) (2005)
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Loosen camshaft sprocket, using retainer 3036.
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Pull off camshaft sprocket using puller T40001 and claws T40001/6 and T40001/7.
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To guide seal puller, thread special tool 2085/2 of seal puller - general usage 2085 into camshaft by hand up to stop.
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Unscrew inner portion of seal puller - general usage 2085 two rotations (approximately 3 mm) from outer portion and secure with knurled-head
screw.
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Lubricate threaded head of seal puller - general usage 2085, place against seal, and with strong force screw into seal as far as possible.
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Loosen knurled bolt and turn inner part against camshaft until seal is removed.
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Secure seal remover in a vise at the flat spots. Remove seal with pliers
Installing
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Do not oil sealing lip of seal.