Ford Mustang (1999-2004) Service Manual: Valve Seals

Special Tool(s)

Valve Spring Compressor 303-452 (T93P-6565-AR)
Valve Stem Seal Replacer 303-383 (T91P-6571-A)
Compressor, Valve Spring (Exhaust) 303-567 (T97P- 6565-AH)

Material

Item Specification
Super Premium SAE 5W-20 Motor Oil XO-5W20-QSP WSS-M2C153- H

Removal and Installation

1. Remove the roller followers. For additional information, refer to Camshaft Roller Follower in this section.

2. Remove the spark plug (12405) from the applicable cylinder.

3. Position the piston (6102) of the cylinder being serviced at the bottom of the stroke.

4. CAUTION: 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.

Use compressed air in the cylinder to hold both valves in position.

5. Using the special tool, compress the valve spring (6513).

Valve Seals

6. NOTE: Valve stem seals should be visually inspected if not installing new seals.

Remove the valve stem seals.

1. Remove the valve spring retainer keys.

2. Remove the valve spring retainers.

3. Remove the valve springs.

4. Remove the valve stem seals.

Valve Seals

7. NOTE: Lubricate the lip of the new seal with clean engine oil prior to installation.

To install, reverse the removal procedure.

    Installation
    1. CAUTION: The timing chain procedures must be followed exactly or damage to the valve and pistons will result. Compress the tensioner plunger, using an edge of a vise. 2. While holding the ratch ...

    Hydraulic Lash Adjuster
    Removal and Installation 1. Remove the roller followers. For additional information, refer to Camshaft Roller Follower in this section. 2. Remove the eight hydraulic lash adjusters. 3. Inspect the ...

    Other materials:

    Inspection and Verification
    NOTE: Upon installation of a new GEM, the module must be reconfigured. For additional information, refer to Section. 1. The warning lamps are a GEM controlled system; refer to Section. 2. Verify the customer concern by operating the system in questio ...

    Crash sensors and airbag indicator
    WARNING: Modifying or adding equipment to the front end of your vehicle (including frame, bumper, front end body structure and tow hooks) may affect the performance of the airbag system, increasing the risk of injury. Do not modify the front end of your vehicl ...

    Removal
    CAUTION: Suspension fasteners are critical parts because they affect performance of vital components and systems and their failure can result in major service expense. A new part with the same part number must be installed if installation becomes necessary. ...