Sable V6-183 3.0L DOHC VIN S MFI (1997)
Valve Guide Seal: Service and Repair
CAUTION:
Component Location/Orientation
The location and orientation of each precision machined component should be noted. When engine is assembled each component should be
installed in its original position. These components include:
-
Rocker arms, rocker arm seats and valve tappets.
-
Camshafts and camshaft journals.
REMOVAL
NOTE: Provided damage has not occurred broken valve springs or damaged valve spring retainers may be replaced without removing the cylinder head.
1. Remove the valve cover and the applicable spark plug.
CAUTION: Make sure the piston is in its compression stroke with both valves closed. Any loss of air pressure will allow the valve(s) to fall into
the cylinder. Use care to prevent accidentally dropping the valve into the cylinder. A rubber band, tape or string wrapped around the end of the
valve stem will prevent this from happening but will still allow enough travel to check the valve for binds.
2. Install an air line with an adapter in the spark plug hole and turn on the air supply. If the air pressure fails to hold the valve(s) closed while
performing the following steps, valve or valve seat damage is indicated and the cylinder head must be removed.
NOTE: Mark positions of rocker arms and valve tappets so that they can be installed in their original positions.
3. Remove rocker arms and valve tappets.
4. Position camshafts in cylinder heads and tighten cylinder head camshaft journal cap bolts.
