Crankshaft Seal Retainer: Service and Repair

Sealing Flange, Transmission Side

Special tools, testers and auxiliary items required

• Hand Drill with Plastic Brush Attachment

• Protective Eyewear

• Sealant (D 176 501 A1)

Removing

- Remove the drive plate. Refer to => [ Drive Plate ] Service and Repair.

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

- Remove the sealing flange bolts - 1 and 2 -.





CAUTION!
The cylinder head gasket could be damaged. The cylinder head gasket can kink if it is bent too much. A kinked cylinder head gasket must be replaced.

- Remove the sealing flange from the cylinder block horizontally.

- Press the crankshaft seal out of the lower timing chain cover.

Installing

• Tightening specifications, refer to => [ Timing Chain Cover and Sealing Flange Overview ] Description and Operation.

CAUTION!
Risk of contaminating lubrication system with sealant residue. Carefully cove the exposed parts of the engine prevent any sealant residue from falling in.

- Using a rotating plastic brush, remove the remaining sealant from the sealing flange and cylinder block. Wear safety glasses.





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

- Clean the holes - arrow - in the cylinder head gasket of old sealant.





• With the cylinder head installed, the holes in the cylinder head gasket are only half visible.

CAUTION!
The cylinder head gasket could be damaged. The cylinder head gasket can kink if it is bent too much. A kinked cylinder head gasket must be replaced.

- Bend the end of the cylinder head gasket down slightly - arrows - until the upper sealing surface on the cylinder head gasket and cylinder head can be cleaned.





- Clean the top and bottom of the cylinder head gasket, it must be free of oil and grease.

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





- Lightly apply sealant to the top and bottom cylinder head gasket sealing surfaces by bending the gasket down slightly again - arrows -.





- To apply the sealant between the cylinder head and gasket surfaces, use a flat object, for example, a feeler gauge.

- Place a thin bead of sealant - arrows - from below in both corners between the cylinder head gasket and cylinder block so that cylinder head gasket holes are filled.





- Make sure the sealing flange alignment bushings are installed in the cylinder block.

- Apply sealant (D 176 501 A1) onto the sealing flange as shown.





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

- Tighten the bolts in 3 passes as follows:





A Tighten the bolts - 1 - to 5 Nm.
B Tighten the bolts - 2 - to 23 Nm.
C Tighten the bolts - 1 - to 10 Nm.

The rest of the installation is performed in reverse order of removal, noting the following:

- Install the crankshaft seal. Refer to => [ Seal, Transmission Side ] Service and Repair.

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

- Install the drive plate. Refer to => [ Drive Plate ] Service and Repair.