Mustang V8-4.6L (2009)
5. Use compressed air in the cylinder to hold both valves in position.
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Apply a minimum of 965 kPa (140 psi) of compressed air into the cylinder.
6. NOTICE: If the components are to be reinstalled, they must be installed in their original positions. Mark the components for installation
into their original locations. Failure to follow these instructions may result in engine damage.
NOTE: If air pressure has forced the piston to the bottom of the cylinder, any loss of air pressure will allow the valve to fall into the cylinder. If
air pressure must be removed, support the valve prior to removal. If a valve drops into the cylinder, remove the cylinder head. For additional
information, refer to Cylinder Head See: Service and Repair/Removal and Replacement/Cylinder Head - Removal.
Using the Valve Spring Compressor, compress the valve spring and remove the valve spring retainer keys.
7. Remove the valve spring retainer and the valve spring.
8. Inspect the valve spring.
Installation
1. NOTICE: If the components are to be reinstalled, they must be installed in their original positions. Mark the components for installation
into their original locations. Failure to follow these instructions may result in engine damage.
Using the Valve Spring Compressor, install the valve spring, the valve spring retainer and the valve spring retainer keys.
2. Relieve the air pressure from the cylinder.
3. NOTICE: If the components are to be reinstalled, they must be installed in their original positions. Mark the components for installation
into their original locations. Failure to follow these instructions may result in engine damage.
NOTE: Do not allow the valve keepers to fall off of the valve or the valve may drop into the cylinder. If a valve drops into the cylinder, the
cylinder head must be removed. For additional information, refer to Cylinder Head See: Service and Repair/Removal and Replacement/Cylinder
Head - Removal.
NOTE: It may be necessary to push the valve down while compressing the spring.
NOTE: Lubricate the camshaft roller followers with clean engine oil prior to installation.
Using the Valve Spring Compressor, compress the valve spring and install the camshaft roller follower.
