Camshaft Oil Seal: Service and Repair

Camshaft oil seal, replacing

Special tools, equipment, testers, measuring instruments and auxiliary items required
For coil spring seals:





^ 10-203 Puller
^ 2085 Oil seal extractor
^ 3415 Counterhold
^ VAG1331 Torque wrench (5...50 Nm)
^ VAG1332 Torque wrench (40...200 Nm)

Special tools, equipment, testers, measuring instruments and auxiliary items required
For PTFE seals:





^ 2085 Oil seal extractor
^ 3415 Counter support
^ T10071 Puller
^ VAG1331 Torque wrench (5...50 Nm)
^ VAG1332 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.
^ Screw 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
Requirements
^ Pistons must not be positioned at TDC.





Note: A PTFE seal (Teflon) -2- is gradually being introduced instead of the inner coil spring seal -1-. This has a wider sealing lip. PTFE oil seals are installed free of oil and grease. A radial shaft seal of older design (with coil spring) may be replaced with a PTFE oil seal, but not vice versa. When a PTFE oil seal is installed, then only such an oil seal may be installed as a replacement part!

PTFE sealing rings

Note: Do not additionally oil or grease the oil seal sealing lip.





^ Position oil seal with guide sleeve T10071 and press in onto limit stop with press sleeve T10071/1 and bolt T10071/2.

Coil spring seals

Note: Oil or grease lightly the oil seal sealing lip.

^ Position oil seal with guide sleeve 10-203 and press in onto limit stop with press sleeve and bolt from 10-203.

Continuation for all seals
^ Insert woodruff key in camshaft.





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

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

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