Audi Workshop Service and Repair Manuals

Renewing crankshaft oil seal (pulley end)

Special tools and workshop equipment required

t	Oil seal extractor -3203-

t	Counterhold tool -3415-

t	Assembly tool -T10053-

Procedure   Note t  Gradual introduction of PTFE oil seals (identification: without ring spring and with a wider sealing lip). t  The sealing lip of these oil seals must not be oiled or greased. t  An old-type radial oil seal (with spring ring) may be replaced with a PTFE oil seal – but not vice versa. –  Remove toothed belt → Chapter.

–  Unbolt stop for torque reaction support -arrows-.

–  Remove crankshaft sprocket; use counterhold tool -3415- to lock sprocket in place.

–  Before fitting oil seal extractor, fully screw in centre bolt for sprocket into crankshaft. –  Unscrew inner part of oil seal extractor -3203- nine turns (approx. 20 mm) from the outer part and lock in position with the knurled screw.

–  Lubricate threaded head of oil seal extractor -3203-, place it in position and, while exerting firm pressure, screw it into oil seal as far as possible. –  Loosen knurled screw and turn inner part against crankshaft until the oil seal is pulled out. –  Clamp flats of oil seal extractor in vice. –  Remove oil seal with pliers.

–  Clean running surface and sealing surface. –  Remove oil residue from crankshaft journal with a clean cloth.   Note Do not lubricate sealing lip and outer rim of oil seal before pressing in. –  Place guide sleeve -T10053/1- onto crankshaft journal. –  Slide oil seal over guide sleeve onto crankshaft journal.

–  Press oil seal on as far as the stop using assembly tool -T10053- and bolt -T10053/2-.

–  Renew centre bolt for toothed belt sprocket. l  Contact surface between toothed belt sprocket and crankshaft must be free of oil. l  Do not lubricate bolt for crankshaft sprocket. –  Install crankshaft sprocket; use counterhold tool -3415- to lock sprocket in place.

Remaining installation steps are carried out in reverse sequence; note the following: –  Fit toothed belt (adjust valve timing) → Anchor. –  Install pulley → Chapter. –  Install poly V-belt → Chapter. –  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten bolts -arrows-. Tightening torque

Component	Nm
Toothed belt sprocket to crankshaft	90 + 90° 1)2)
Stop for torque reaction support to sump	28
l  1) Renew bolt. l  2) 90° = one quarter turn.