Ford Mustang (1999-2004) Service Manual: Piston - Pin Diameter

1. Measure the piston pin diameter in two directions at the points shown. Verify the diameter is within specification.

  • Refer to the appropriate section in Group for the procedure.
  • If out of specification, install new components as necessary. Refer to the appropriate section in Group for the procedure.

Piston - Pin Diameter

Connecting Rod -Cleaning

CAUTION: Do not use a caustic cleaning solution or damage to connecting rods can occur.

1. NOTE: The connecting rod large end is a matched set. The connecting rod cap must be installed on the original connecting rod in the original position. Do not reverse the cap. Parts are not interchangeable.

Mark and separate the parts and clean with solvent. Clean the oil passages.

Connecting Rod -Cleaning

Connecting Rod -Large End Bore

1. Tighten the bolts to specification, then measure the bore in two directions. The difference is the connecting rod bore out-of-round. Verify the out-of-round is within specification.

  • Refer to the appropriate section in Group for the procedure.
  • If out of specification, install new components as necessary. Refer to the appropriate section in Group for the procedure.

Connecting Rod -Large End Bore

    Piston - Ring-to-Groove Clearance
    1. Inspect the piston for ring land damage or accelerated wear. 2. Measure the piston ring-to-groove clearance. Refer to the appropriate section in Group for the procedure. If out of specifica ...

    Connecting Rod - Bushing Diameter
    1. Measure the inner diameter of the connecting rod bushing, if equipped. Verify the diameter is within specification. Refer to the appropriate section in Group for the procedure. If out of s ...

    Other materials:

    Ignition Coil
    Material Item Specification Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A or equivalent ESE-M1C171- A Removal and Installation 1. Disconnect the battery ground cable (14301). For additional information, refer to ...

    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 Lower Intake Manifold in this section. 2. Remove the push r ...

    Wheel Hub or Axle Flange Face Runout
    NOTE: If the axle shaft assembly is removed, check runout of the shaft itself. The forged (unmachined) part of the shaft is allowed to have as much as 3.0 mm (0.120 inch) runout. This alone will not cause a vibration condition. 1. Position the special tool ...