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Removing and installing camshafts > < Renewing exhaust camshaft seal

Golf Mk4

Removing
Removing
–  Remove top part of toothed belt guard.
   
–  Set camshaft toothed belt pulley to TDC mark No. 1 cylinder by turning crankshaft. Marking on camshaft toothed belt pulley must align with arrow on toothed belt guard.
–  Loosen tensioning roller and remove toothed belt from camshaft pulley.
–  Turn crankshaft back slightly.
  A13-0077
–  Remove camshaft toothed belt pulley. To loosen bolt, hold camshaft toothed belt pulley tight using counterhold tool -3415-.
–  Remove Woodruff key from camshaft toothed belt pulley.
–  Screw camshaft toothed belt pulley securing bolt in camshaft to stop.
–  Unscrew inner part of oil seal extractor -2085- by two turns (approx. 3 mm) out of outer part and lock with knurled screw.
  N15-0454
–  Lubricate threaded head of oil seal extractor, place it in position and exerting firm pressure, screw it as far as possible into oil seal.
–  Loosen knurled screw and turn inner part against camshaft until the oil seal is pulled out.
–  Clamp flat ends of oil seal extractor in vise, Remove seal using pliers.
Condition
l  The pistons must not be positioned at TDC.
  Note
Sliding application of PTFE seals (polytetrafluoroethylene). Identification: no annular spring; wider sealing lip. The sealing lip of these seals must not be oiled or lubricated. An old model radial shaft seal (with annular ring) may be renewed by a PTFE seal, but not vice versa.
  A15-0152
–  Fit seal using assembly tool -T10071- and press in to stop using fitting sleeve -T10071/1- and bolt -T10071/2-.
–  Fit Woodruff key in camshaft.
  N15-0405
–  Install camshaft toothed belt pulley. To tighten bolt, hold camshaft toothed belt pulley tight using counterhold tool -3415-. Torque setting: 100 Nm.
  Note
When camshaft is turned, crankshaft must not be at TDC. Danger of damage to valves and piston crowns.
Further assembly is basically the reverse of the dismantling procedure.
Installing toothed belt and adjusting timing → Chapter.
  N15-0454

Removing and installing camshafts > < Renewing exhaust camshaft seal