Sealing Flange, Belt Pulley Side

Sealing Flange, Belt Pulley Side

Special tools, testers and auxiliary items required

• Counter Support (3415)

• Assembly Tool (T10053)

• Torque Wrench (5-50 Nm) (V.A.G 1331)

• Torque Wrench (40-200 Nm) (V.A.G 1332)

• Hand Drill with Plastic Brush Attachment

• Silicone Sealant (D 176 404 A2)

• Flat Scraper

Removing

- Remove the ribbed belt. Refer to => [ Ribbed Belt ] Ribbed Belt.

- Remove the toothed belt, refer to one of the following:

=> [ Toothed Belt, with Divided Toothed Belt Guard ] Toothed Belt, With Divided Toothed Belt Guard.

=> [ Toothed Belt, without Divided Toothed Belt Guard ] Toothed Belt, Without Divided Toothed Belt Guard.

- Then, rotate the crankshaft back slightly.

- Remove the crankshaft toothed belt gear. To do this, secure the toothed belt gear using (3415).





- Drain the engine oil.

- Remove the oil pan. Refer to => [ Oil Pan ] Oil Pan.

- Remove the sealing flange bolts

- Remove the sealing flange, and if necessary loosen by applying light strikes using a rubber mallet.

- Remove the sealant residue from the cylinder block using a flat scraper.

- Cover the seal with a clean cloth.

• If the oil seal is to be replaced, drive out the oil seal.

- Remove the sealant residue from the sealing flange using a rotating plastic brush (wear safety glasses).





- Clean the sealing surfaces. They must be free of oil and grease.

Installing

- Cut the tube nozzle at the front mark (nozzle diameter approximately 3 mm).





- Apply a sealant bead of approximately 2 to 3 mm as shown - arrows - onto the clean sealing surface of the sealing flange.

• Cover the seal with a clean cloth before applying the sealant bead.

• The sealant bead must not be thicker than 2 to 3 mm or excess sealant could get into the oil pan and clog the oil intake pipe strainer.

• Note the expiration date of the sealant.

• The sealing flange must be installed within 5 minutes after application of the sealant.

• To position the sealing flange with the seal installed, use (T10053/1).

• After installing, allow the sealant to dry for approximately 30 minutes. Only after then may the engine oil be added.

- Position the sealing flange immediately and tighten all the bolts - arrows - until snug.





- Tighten the sealing flange bolts in a diagonal sequence to 15 Nm

- Remove any excess sealant.

- Install the oil pan. Refer to => [ Oil Pan ] Oil Pan.

- Install the seal, if necessary. Refer to => [ Seal, Belt Pulley Side ] Service and Repair.

• Contact surface between toothed belt gear, diamond disc and crankshaft must be free of oil.

• Central bolt must be replaced.

• The threads and shoulder must be free of oil and grease.

- Put on toothed belt gear - 2 - with diamond disc - 3 - and tighten the bolt - 1 - hand-tight.





- Secure toothed belt gear using counter-holder tool (3415).





- Tighten new center bolt to 90 Nm and turn an additional 90° (1/4 rotation, additional rotation may occur in several stages).

The rest of the assembly is basically a reverse of the disassembling sequence.

How to install toothed belt and adjust valve timing.

Vehicles with divided toothed belt guard => [ Toothed Belt, with Divided Toothed Belt Guard ] Toothed Belt, With Divided Toothed Belt Guard.

Vehicles without divided toothed belt guard => [ Toothed Belt, without Divided Toothed Belt Guard ] Toothed Belt, Without Divided Toothed Belt Guard.