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:

    Brake Booster - Hydro-Boost (Removal and Installation)
    Special Tool(s) Installer Set, Teflon Seal 211-D027 (D90P-3517-A) or equivalent Removal WARNING: The power brake booster should not be carried by the accumulator, nor should it ever be dropped on the accumulator. Check the snap ring on th ...

    Engine Dynamic Balance Shaft
    Removal 1. Remove the timing chain (6268). For additional information, refer to Timing Chain in this section. 2. Disconnect and position the wire harness aside. 3. Remove the radiator fan and shroud assembly (8146). 4. Remove the engine dynamic balan ...

    Inspection and Assembly Requirements - Following an A/C Compressor Failure
    CAUTION: To prevent refrigerant system contamination and possible failure of the new A/C compressor, carry out the following procedures. 1. NOTE: A dirty A/C evaporator core orifice or a condenser to evaporator tube containing black refrigerant oil and parti ...