Mountaineer 2WD V6-245 4.0L VIN X SFI (2000)
Valve Spring: Service and Repair
Special Tools
Removal
1. Remove the valve covers.
2. CAUTION: If the rocker arm shaft is not loosened gradually, the shaft may become bent during removal.
Remove the rocker arm shaft assembly.
3. Remove the spark plugs.
4. Position the piston at top dead center.
5. CAUTION: If air pressure has forced the piston to the bottom of the cylinder, any loss of air pressure will allow the valve(s) to fall into the
cylinder. A rubber band, tape or string wrapped around the end of the valve stem will prevent this from happening and still allow enough travel to
check the valve for binds and excessive guide-to-valve stem clearance.
Use a suitable tool to apply air pressure to the cylinder.
6. Using the Valve Spring Compressor Bar and the Valve Spring Compressor, remove the valve spring retainer key.