Variable Valve Timing Actuator: Service and Repair
WM 153719 Removing and installing hydraulic valve for camshaft adjustment
Preliminary work
Preliminary work
1. Remove cover for camshaft housing.
Removing hydraulic valve for camshaft adjustment
Removing hydraulic valve for camshaft adjustment
Information:
The hydraulic valve for camshaft adjustment as of model year 2005 does not fit on the bearing cap and camshaft housing of model years 2003 to 2004.
If an engine of model years 2003 to 2004 is to be converted to suit a new hydraulic valve with oil strainer, the camshaft housing and all camshaft bearing caps must be replaced.
1. Remove screws on hydraulic valve. -1-
Camshaft adjustment valve
2. Remove oil strainer with a small magnet. If the oil strainer cannot be removed through the housing, the bearing cap must be removed.
Oil strainer fitted
3. The oil strainer is located in the camshaft housing under the first camshaft bearing cap.
Oil strainer partly inserted in camshaft housing
Installing hydraulic valve for camshaft adjustment
Installing hydraulic valve for camshaft adjustment
Information:
The hydraulic valve for camshaft adjustment as of model year 2005 does not fit on the bearing cap and camshaft housing of model years 2003 to 2004.
If an engine of model years 2003 to 2004 is to be converted to suit a new hydraulic valve with oil strainer, the camshaft housing and all camshaft bearing caps must be replaced.
1. Insert the oil strainer into the camshaft housing under the first camshaft bearing cap. You do not have to remove the camshaft bearing cap to do this (Figure shows oil strainer without camshaft bearing cap).
Oil strainer partly inserted in camshaft housing
2. Place hydraulic valve in installation position. Make sure that the side with the fastening hole is always pointing towards the intake-air distributor. Fit screws for hydraulic valve - Tightening torque: 10 Nm (7.5 ftlb.). -1-
Camshaft adjustment valve
Subsequent work
Subsequent work
1. Install cover for camshaft housing.