Valve Cover: Service and Repair

Cylinder head cover, removing and installing

Removing
- Remove engine covers.





- Unbolt crankcase ventilation line from heatshield and cylinder head cover and disconnect line from front hose (arrows).
- Swing crankcase ventilation line to side.
- Remove 2 retaining clamps for upper toothed belt cover.
- Disconnect harness connectors at ignition coils -1- and unbolt Ground (GND) connection -2-.
- Unbolt ignition coils.





- Remove cylinder head cover nuts (arrows) and remove cylinder head cover.

Installing
Installation is the reverse of removal, noting the following:

Note: Replace cylinder head cover gaskets if damaged.





- Using small screwdriver, carefully apply thin layer of sealant D 454 300 A2 to both corners of sealing surface between double bearing cap and cylinder head (arrows).

CAUTION! Part numbers are listed here for reference only. Always check with your Parts department for the latest information.





- Using small screwdriver, carefully apply thin layer of sealant D 454 300 A2 to both corners of sealing surface between hydraulic chain tensioner and cylinder head (arrows).
- Tighten cylinder head cover nuts alternately in diagonal sequence.
- Make sure toothed belt cover is installed properly.





Tightening torques