Camshaft Oil Seal: Service and Repair

Camshaft seals, replacing

Oil seal at camshaft gear, removing and installing





Special tools, testers and auxiliary items required
^ Seal puller 2085
^ Counter-holder tool 3036
^ Assembly tool T10071
^ Torque wrench V.A.G 1331
^ Torque wrench V.A.G 1332

Removing
- Remove upper toothed belt guard.





- Bring camshaft gear to marking for TDC cylinder 1 by turning crankshaft. Marking on camshaft gear must be flush with marking on cylinder head cover.
- Remove cylinder head cover.
- Remove toothed belt from camshaft gear.
- Turn crankshaft back slightly.
- Remove camshaft sprocket. To loosen bolt, counterhold camshaft gear using retainer 3036.





- Insert camshaft gear retaining bolt - arrow - into camshaft by hand to stop to guide seal puller.
- Remove inner portion of seal puller 2085 two rotations (approx. 3 mm) from outer portion and secure with knurled-head screw.





- Lubricate threaded head of seal puller 2085, position and screw into oil seal as far as possible with forced pressure.
- Loosen knurled bolt and turn inner part against camshaft until seal is removed.

Installing

Note: Phased in introduction of PTFE sealing rings (Distinguishing features: without ring spring, sealing lip designed wider). The sealing lip of this sealing ring may not be oiled or greased. An oil seal of the old version (with ring spring) can be replaced by a PTFE seal - but not the other way around.

- Before installing, remove oil remains from camshaft journal with a clean cloth.





- Install guide sleeve T10071/1 on camshaft pin.
- Slide oil seal over guide sleeve onto camshaft pin.





- Press in gasket up to stop using thrust sleeve T10071/3. To do so, use bolt T10071/4.
The rest of assembly is in reverse order of disassembling.
Install toothed belt and adjust valve timing.

Camshaft Position (CMP) Sensor G40 gasket, removing





Special tools, testers and auxiliary items required
^ Seal remover 2085
^ Seal Installer 3241 (for standard version gasket with ring spring)
^ ^ Assembly Tool T10071 (for PTFE-version of sealing ring)
^ Torque wrench V.A.G 1331
^ Torque wrench V.A.G 1332
^ Bolt M8�60

Removing





- Disconnect connector from Camshaft Position (CMP) Sensor G40 - arrow -.
- Remove upper toothed belt guard.
- Remove housing for Hall sensor.
- Remove washer and cover for Hall sensor.





- To guide Seal Puller 2085, thread Adapter 2085/1 in camshaft by hand as far as stop.
- Remove inner portion of seal puller 2085 two rotations (approx. 3 mm) from outer portion and secure with knurled-head screw.





- Lubricate threaded head of seal extractor, position and with forced pressure screw into oil seal as far as possible.
- Loosen knurled bolt and turn inner part against camshaft until seal is removed. Installing

Note:
^ Phased in introduction of PTFE sealing rings (Distinguishing features: without ring spring, sealing lip designed wider). The sealing lip of this sealing ring may not be oiled or greased. An oil seal of the old version (with ring spring) can be replaced by a PTFE seal - but not the other way around.

PTFE sealing ring, installing
- Before installing, remove oil remains from camshaft journal with a clean cloth.





- Place guide sleeve T10071/5 on camshaft pin.
- Slide sealing ring over Sleeve T10071/5.





- Press in gasket up to stop using thrust sleeve T10071/3. Use bolt M8�60 - 1 - for this.

Sealing ring, installing with ring spring
- Lightly oil sealing lip of seal.





- Place guide sleeve 3241/2 on camshaft pin.
- Slide sealing ring over Sleeve 3241/2.





- Press in gasket up to stop using thrust sleeve 3241/1. To do so, use bolt 3241/3.

Procedure for all sealing rings
- Insert Camshaft Position (CMP) Sensor G40 trim with notch in intake camshaft.
- Install washer (with cone outward) and fasten bolt to 25 Nm.
- Install Camshaft Position (CMP) Sensor G40 housing and tighten to 10 Nm.
- Install toothed belt cover - upper part.





- Connect connector from Camshaft Position (CMP) Sensor G40 - arrow -.