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Valve Cover: Service and Repair




Sealing cover for camshaft housing (cylinder head cover)

Sealing the sealing surface of the cylinder head cover

Use only the sealants Drei Bond silicone - type 1209 and Loctite 5900 to seal the sealing surface on the cylinder head cover.

Note After the sealant has been applied, the cylinder head must be joined with the cylinder head cover within 5 minutes.

Application of silicone bead





At the processing nozzle, cut off the first metering step. Apply a uniform bead approximately 1.5 mm wide to the cleaned sealing surface of the cylinder head cover.





Applying the sealant on the sealing surface of the cylinder head cover





Apply bead of sealant in the bearing saddle area.

Seal screw union at the oil pressure duct.





If the hexagon-head bolt (arrow) was loosened, the micro-encapsulated hexagon-head bolt must always be replaced. Part number 900.378.163.09 W6 x 16)

Fastening cover for camshaft housing (cylinder head cover)

Tightening torque: 13 Nm (10.0 ft. lbs.)





Tightening sequence:
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