Camshaft Oil Seal: Service and Repair

Camshaft oil seal, replacing





Special tools and equipment
^ 2085 Oil seal extractor
^ 3415 Counter support
^ T10071 Puller
^ V.A.G 1331 Torque wrench (5...50 Nm)
^ V.A.G 1332 Torque wrench (40...200 Nm)

Removing
^ Remove toothed belt guard - upper part.





^ Set camshaft pulley to TDC No. 1 cylinder by turning crankshaft. Mark on camshaft sprocket must align with arrow on toothed belt guard
^ Release tensioning roller and take toothed belt off camshaft pulley.
^ Turn crankshaft back slightly.





^ Remove camshaft pulley. To loosen camshaft pulley securing bolt, hold pulley with counter support 3415
^ Remove woodruff key from camshaft.
^ Thread camshaft pulley securing bolt fully into camshaft onto limit stop.
^ Unscrew inner part of oil seal extractor 2085 two turns (approximately 3 mm) out of outer part and lock in position with knurled screw.





^ Lubricate threaded head of oil seal extractor, place it in position and exerting firm pressure screw it into oil seal as far as possible.
^ Loosen knurled screw and turn inner part of extractor against camshaft until oil seal has been extracted.
^ Clamp flats of oil seal extractor in a vice. Remove oil seal with pliers.

Installing

Conditions
^ Pistons must NOT be positioned at TDC.

Note: Gradual introduction of PTFE oil seal (Poly-Tetra-Fluor-Ethylene). Identification characteristics: No annular spring, wider sealing lip. The sealing lip of this oil ring must not be oiled or greased. A radial shaft seal of older design (with annular spring) may be replaced with a PTFE oil seal, but not vice versa.





^ Position oil seal with guide sleeve T10071 and press in on to limit stop with press sleeve T10071/1 and bolt T10071/2.
^ Insert woodruff key in camshaft.





^ Install camshaft pulley. To tighten securing bolt counter-support camshaft pulley with counter support 3415.
Tightening torque: 100 Nm

Note: When the camshaft is turned, the crankshaft must not be at TDC. This is due to the danger of damage to the valves or piston crowns.

The rest of the assembly is basically in reverse order to the removal sequence.
Installing toothed belt and adjusting timing.