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:

    Reverse Sun Gear
    Disassembly   1. Remove the reverse clutch sun gear assembly and the No. 4 forward clutch hub bearing and race. 2. Remove the forward clutch sun gear assembly and the No. 5 forward clutch sun gear bearing and race. Assembly 1. The forward clutch ...

    Valve - Springs, Retainer and Valve Stem Seal
    Special Tool(s) Compressor, Valve Spring 303-452 (T93P-6565-AR) Installer, Valve Stem Oil Seal 303-383 (T91P-6571-A) Compressor, Valve Spring 303-567 (T97P-6565-AH) Spacer, Valve Spring Compressor 303 ...

    Instrument Cluster Self-Diagnostic Mode
    To enter the instrument cluster self-diagnostic mode, press and hold the instrument cluster SELECT/RESET button, turn the ignition switch to the RUN position, and then continue pressing the SELECT/RESET button (five seconds) until tESt is displayed in th ...