Removing Camshaft Housing
Removing camshaft housingPreliminary work for removing camshaft housing
1. Remove engine.
2. Remove intake-air distributor.
3. Pull off the cable plug on the camshaft sensor.
4. Turbocharged engine (M48/50): Remove oil feed line from camshaft housing. To do this, unscrew union nut.
5. Turbocharged engine (M48/50): Remove sheetmetal bracket for turbocharger.
6. Unscrew ground connection.
7. Remove cover for camshaft housing.
8. Remove timing case cover.
9. Remove camshafts.
10. Remove flat-base tappets and put down in accordance with installation position.
Removing 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 partly inserted in camshaft housing
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).
Note: 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, ensure that none of the sealing rings or residual sealant falls into the cylinder head.
5. Remove all residual sealing compound.