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:

    Extension Housing
    Special Tool(s) Installer, Bearing Cup 204-039 (T77F-1217-B) Adapter for 303-224 (Handle) 205-153 (T80T-4000-W) Disassembly and Assembly   1. Remove the bolt and the output shaft speed (OSS) sensor. 2. Remove the bolt a ...

    Clutch And Clutch Field Coil
    Special Tool(s) 2-Jaw Puller 205-D026 (D80L-1002-L) or equivalent Installer, A/C Compressor Coil 412-065 (T89P-19623-EH) Holding Fixture, Compressor Clutch (3.8L vehicles) 412-098 (T94P-19703-AH) Holding ...

    Differential Case and Ring Gear - Conventional
    Special Tool(s) 2-Jaw Puller 205-D072 (D97L-4221-A) or equivalent Installer, Differential Side Bearing 205-010 (T57L-4221-A2) Step Plate 205-D061 (D83T-4205-C2) or equivalent ...