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:

    Cooling System Draining, Filling and Bleeding
    Material Item Specification Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) (yellow color) WSS-M97B51- A1 Draining WARNING: Never remove the pressure relief cap while the engine is operating or when the cooling syst ...

    Connecting Rod - Twist
    1. Measure the connecting rod twist on a suitable alignment fixture. Follow the instructions of the fixture manufacturer. Verify the measurement is within specification. Refer to the appropriate section in Group for the procedure. If out of specificat ...

    Jump-starting the vehicle
    WARNING: The gases around the battery can explode if exposed to flames, sparks, or lit cigarettes. An explosion could result in injury or vehicle damage. WARNING: Batteries contain sulfuric acid which can burn skin, eyes and clothing, if contacted. Do not atte ...