Variable Valve Timing Cover / Housing: Service and Repair

Sealing Flange, Transmission Side

Special tools, testers and auxiliary items required

• Guide Sleeve (T20097)

• Silicone Sealant (D 174 003 A2)

• Flat Scraper

• Hand Drill with Plastic Brush Attachment

• Protective Eyewear

Requirements

• The transmission is removed.

• The dual mass flywheel removed. refer to => [ Flywheel ] Service and Repair.

Removing

- Unhook the intermediate plate at the sealing flange and at the alignment bushings - arrows -.






- Remove the bolts - 1 through 8 - and remove the transmission side sealing flange.






Installing

• Note the expiration date of the silicone sealant.

• The sealing flange must be installed within 5 minutes after applying the silicone sealant.

- Remove any sealant residue on the cylinder block using a flat blade scraper.

Danger of eye injury.

• Wear protective eyewear.

- Remove any remaining sealant on the sealing flange using, for example, a rotating plastic brush.






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

- Remove any oil residue on the crankshaft journal with a clean cloth.

- Cut the sealant tube nozzle at the front mark (nozzle diameter: approximately 2 mm).






- Apply the sealant onto the clean sealing surface of the sealing flange as shown.






• Thickness of sealant bead: 2 to 3 mm

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

• The sealant bead may not be thicker than specified, otherwise the excess sealant could enter the oil pan and clog the oil intake tube strainer.

• The guide sleeve (T20097) may be removed only after the sealing flange has been installed on the crankshaft journal.

- Position the guide sleeve (T20097) on the crankshaft journal.






- Slide the sealing flange onto the crankshaft journal with the guide sleeve (T20097).

- Tighten the bolts.

Tightening sequence and specification, refer to => [ Sealing Flange, Transmission Side, Bolt Tightening Sequence and Specification ] Cylinder Block Overview, Transmission Side.

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

The rest of the installation is performed in the reverse order of removal.