Ford Mustang (1999-2004) Service Manual: Piston Inspection

Special Tool(s)

Scraper, Piston Ring Groove 303-D033 (D81L-6002-D) or equivalent

CAUTION: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.

1. Clean and inspect the (1) ring lands, (2) skirts, (3) pin bosses, and the (4) tops of the pistons. If wear marks, scores or glazing is found on the piston skirt, check for a bent or twisted connecting rod.

Piston Inspection

2. Use the Piston Ring Groove Scraper to clean the piston ring grooves.

  • Make sure the oil ring holes are clean.

Piston Inspection

    Crankshaft - Connecting Rod Journal Taper, Out of Round
    1. Measure the crankshaft connecting rod journal diameters in two directions perpendicular to one another at each end of the connecting rod journal. The difference in the measurements from one e ...

    Piston - Pin to Bore Diameter
    1. WARNING: Cover the end of the pin bore with a hand or shop rag when removing the retainer ring, since it has a tendency to spring out. Wear eye protection. NOTE: Piston and piston pins are a matc ...

    Other materials:

    Crankshaft Front Seal
    Special Tool(s) Installer, Front Cover Oil Seal 303-335 (T88T-6701-A) Installer, Crankshaft Front Oil Seal 303-474 (T94P-6701-AH) Remover, Oil Seal 303-409 (T92C-6700-CH) Material Removal 1. Remove the crankshaft pulley. ...

    Rear Bumper
    Removal and Installation All vehicles 1. Remove the rear bumper cover. For additional information, refer to Rear Bumper Cover in this section. 2. Remove the rear bumper cover isolator. Vehicles with 4.6L engines 3. Remove the bolts and the exhaust outlet pip ...

    Installation
    1. CAUTION: Install the brake pads in full axle sets. Do not install new brake pads on only one side of vehicle. Install the new slipper and brake pads. 2. Position the caliper on the anchor plate and install the bolts. 3. Install the wheel and tire ...