Audi Workshop Service and Repair Manuals

Renewing exhaust camshaft oil seal Special tools and workshop equipment required

t  Oil seal extractor -2085-

t  Counterhold tool -3036-

t  Assembly tool -T10071-

t  Locking pin -T40011- for vehicles from 06.1999 onwards

Procedure l  Lock carrier must be in service position → Rep. Gr.50. –  Release quick-release fasteners and remove engine cover panel -arrows-. –  Remove poly V-belt and tensioner for poly V-belt → Chapter.

–  Remove toothed belt cover (top section)   Caution Irreparable damage can be caused if the toothed belt slips. Turn crankshaft only in direction of engine rotation (in clockwise direction). –  Rotate crankshaft to “TDC” by turning bolt for toothed belt sprocket. l  Marking on camshaft sprocket and marking on crankshaft must be aligned to “TDC”-arrows-.

Vehicles up to 05.1999: –  Loosen TORX bolt -bottom arrow- and press toothed belt tensioner down. –  Remove toothed belt from camshaft sprocket.

Vehicles from 06.1999 onwards:   Caution Risk of damage to toothed belt tensioner. The toothed belt tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure. –  Applying constant and moderate force, apply hexagon key through opening -2- to press toothed belt tensioning roller -1- anti-clockwise -arrow- until piston can be locked with locking pin -T40011-. –  Insert locking pin -T40011- and make sure that it remains in place.   Note Bolt -3- must not be slackened. –  Remove toothed belt from camshaft sprocket.

All vehicles (continued): –  Loosen camshaft sprocket bolt using counterhold tool -3036-. –  Pull off camshaft sprocket.

–  To guide oil seal extractor, screw camshaft sprocket bolt -arrow- into camshaft as far as it will go by hand. –  Unscrew inner section of oil seal extractor -2085- two turns (approx. 3 mm) out of outer section and lock inner section with knurled screw.

–  Lubricate threaded head of oil seal extractor -2085-, place it in position and screw it into oil seal as far as possible (applying firm pressure). –  Loosen knurled screw and turn inner section against camshaft until oil seal is pulled out. –  Clamp flats of oil seal extractor in vice and use pliers to remove oil seal. –  Clean contact surface and sealing surface.

–  Fit guide sleeve -T10071/1- onto camshaft journal.   Note Do not lubricate sealing lip of oil seal. –  Push oil seal over guide sleeve onto shaft journal. –  Take off guide sleeve.

–  Press oil seal in onto stop using press sleeve -T10071/3- and bolt -T10071/4-.

–  Install camshaft sprocket. l  Installation position: The thinner web of the camshaft sprocket faces outwards -arrows- and the marking for “TDC” is visible.   Caution If a piston is at “TDC” the valves could strike the piston when turning the camshaft. Pistons must therefore not be at “TDC” This could otherwise result in damage to valves and pistons. –  Tighten camshaft sprocket bolt using counterhold tool -3036-. –  Install toothed belt (adjust valve timing): vehicles up to 05.1999 → Anchor, vehicles from 06.1999 onwards → Anchor. –  Install poly V-belt and tensioner for poly V-belt → Chapter. Tightening torque → Chapter