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

Special Tool(s)

 Compressor, Valve Spring 303-163 (T81P-6513-A)

Material

Valve Springs

Removal

1. Remove the LH and the RH valve covers. For additional information, refer to Valve Cover-LH and Valve Cover RH in this section.

2. Rotate the crankshaft until the piston for the valve being worked on is at the top of its stroke with both the intake valve and the exhaust valve closed.

3. Hold the valve in the cylinder head.

  • Remove the spark plug. For additional information, refer to Section.
  • Apply a minimum of 965 kPa (140 psi) of compressed air into the cylinder.

4. CAUTION: If the components are to be reinstalled, they must be installed in the same position. Mark the components for location.

NOTE: If a valve drops into the cylinder, remove the cylinder head. For additional information, refer to Cylinder Head LH or Cylinder Head RH in this section.

Remove the rocker arms.

1. Remove the bolts.

2. Remove the rocker arms.

Valve Springs

5. Using the special tool, compress the valve springs.

Valve Springs

6. Remove the valve spring assembly.

1. Remove the valve spring retainer key.

2. Remove the valve spring retainer.

3. Remove the valve spring.

4. Remove and discard the valve stem seal and spring seat assembly.

Valve Springs

7. Inspect the components. For additional information, refer to Section.

Installation

1. NOTE: Lubricate the parts with clean engine oil.

To install, reverse the removal procedure. Tighten the rocker arm bolts in two stages.

  • Stage 1: Tighten to 5 Nm (44 lb-in).
  • Stage 2: Tighten to 35 Nm (26 lb-ft).

Valve Springs

    Push Rod
    Removal CAUTION: Mark the components removed for correct location. 1. Remove the rocker arms (6564). For additional information, refer to Rocker Arm in this section. 2. Remove the push rods (656 ...

    Valve Tappets
    Material Removal CAUTION: If removing more than one valve tappet, mark the components removed for correct location. 1. Remove the lower intake manifold. For additional information, refer to Lo ...

    Other materials:

    Disassembly
    1. Remove the differential assembly from the differential housing. For additional information, refer to Differential Case in this section. 2. Remove the 10 bolts. 3. CAUTION: Do not damage the threads in the bolt holes. Insert a punch in the bolt holes, a ...

    Door Alignment
    NOTE: The door should be adjusted for even and parallel fit with the body opening and surrounding panels as well as making sure that the anti-chuck pin is not binding on convertible models. 1. Mark the position of the front door hinges to the front ...

    Door Speaker - Upper
    Removal and Installation 1. Remove the front door trim panels (239420). For additional information, refer to Section 2. Remove the upper speaker access cover. 3. Remove the upper speaker housing. 1. Remove the screw. 2. Remove the upper spea ...