Removing Camshaft Housing

WM 150321 Removing camshaft housing

Removing camshaft housing

Removing camshaft housing





Exploded drawing, camshaft housing

1 - Camshaft housing
2 - Camshaft sensor fastening screw M6 x 16
3 - Camshaft sensor
4 - Plug
5 - Cheese head bolt M8 x 20
6 - Cheese head bolt M8 x 30
7 - Sealant application on camshaft housing. Make sure that no sealant can fall into the cylinder head. Carefully remove old residual sealing compound.
8 - Camshaft housing securing screw M8 x 45
9 - Sealant application on spark plug recess. Make sure that no sealant can fall into the cylinder head. Carefully remove old residual sealing compound.
10 - Oil duct sealing ring





Top view, camshaft housing

1. An oil strainer is fitted under the camshaft adjustment valve in the camshaft housing. Check oil strainer and clean in solvent naphtha or replace if necessary. Remove oil strainer with a small magnet -1-. The oil strainer prevents dirt from getting into the camshaft adjustment valve.





Oil strainer, top view

Oil strainer partly inserted in camshaft housing





Oil strainer

2. Unscrew upper fastening screw -3- of oil line. Replace sealing ring -2-.





3. Unscrew both hexagon socket head bolts M8 x 20 and M8 x 30 on the front end (on cylinder row 1-4, the screws are located at the side on the exterior of the chain box).





Illustration shows cylinder row 5-8

Information:
When removing the camshaft housing, ensure that none of the sealing rings or residual sealant fall into the cylinder head.

4. Unscrew 26 camshaft-housing fastening screws (M8 x 45) contrary to the order shown and lever camshaft housing off the cylinder head. When removing the camshaft housing, ensure that none of the sealing rings or residual sealant falls into the cylinder head.

- Illustration shows tightening sequence





Tightening sequence for camshaft housing

5. Remove all residual sealing compound.