Sealing Flange - Belt Pulley End, Removing and Installing

Sealing flange - belt pulley end, removing and installing





Special tools, testers and auxiliary items required
^ Counter support 3415
^ Assembly tool T10053
^ Torque wrench V.A.G1331
^ Torque wrench V.A.G1332
^ Hand drill with plastic brush
^ Silicone sealant D 176 404 A2
^ Flat scraper
^ Protective glasses

Removing





- Remove toothed belt.
- Remove crankshaft toothed belt pulley by counter-holding toothed belt pulley with counter support 3415.
- Remove oil pan.
- Remove bolts from sealing flange - belt pulley end.

Release sealing flange using light blows with a rubber-headed hammer if necessary.
- Remove seal for crankshaft - belt pulley end.





- Remove sealant remains on cylinder block with a flat scraper.
- Remove sealant remains on sealing flange with a rotating plastic brush (wear eye protection).
- Clean sealing surfaces; they must be free of oil and grease. Installing

Note:
^ Observe the use-by date of the sealing compound.
^ The sealing flange must be installed within 5 minutes of applying the silicone sealing compound.





- Cut off tube nozzle at forward marking (approx. nozzle diameter of 3 mm).
- Apply silicone sealing compound, as shown, to clean oil pan sealing surface.

Sealant bead must be:
^ 23 mm thick
^ Run bead along inner side of bolt holes - arrows -.

Note:
^ The sealing compound bead must not be thicker, otherwise excessive sealing compound will enter the oil sump and may block the oil suction pipe strainer.
^ Before applying sealant bead, cover sealing surface of oil seal with a clean rag.

- Fit sealing flange immediately and lightly tighten all bolts.
- Tighten sealing flange securing bolts using diagonal and alternating sequence.
- Tightening torque: 15 Nm
- Remove excess sealing compound.
- Install oil pan.

Note:
^ Allow sealing compound dry for approx. 30 minutes after installing oil pan. Only then fill engine with oil.

- Install new seal for crankshaft - belt pulley end.





- Install crankshaft toothed belt pulley. Counterhold toothed belt pulley with counter support 3415.
- Tighten new central bolt.
- Tightening torque: 90 Nm plus 1/4 turn (90°).

Note:
^ Thread and shoulder of the central bolt must be free of oil and grease.

- Install toothed belt and tension.