Valves (G1851894): Removal
WARNING: This page is about a different variant/trim than selected.
NOTE:
Removal steps in this procedure may contain installation details.
- Disconnect the battery ground cable.
Refer to: STARTUP BATTERY DISCONNECT AND CONNECT
-
WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
- Refer to: LEFT CYLINDER HEAD
- CAUTION:
- Make sure that the area around the component is clean and free of foreign material.
- Make sure the working surfaces are thoroughly clean to avoid contamination of the sensitive components.
- Make sure that the valve grinding paste is kept away from the valve stem.
- Place a small amount of fine valve grinding paste evenly around the contact face of the valve.
- Place the valve in position and, using a suitable valve grinding tool, rotate the valve back and forth a few degrees on its seat, using light pressure.
- Raise the valve frequently during lapping and turn it into a new position after a few laps or rotations.
- Lap only until a continuous but narrow lapping mark is visible on both the valve seat and valve face.
- Thoroughly clean all surfaces to remove traces of valve grinding paste from the cylinder head, valve seat and valve face.
- Repeat steps 4 to 7 for the remaining valves.