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:

    Material
    Item Specification Threadlock and Sealer E0AZ-19554-AA WSK-M2G351-A5 (type II) Shoulder Bolt Kit F5ZZ-76539A04-A - NOTE: Before starting the adjustment process, inspect the top for damage, make sure that the door window glass ...

    Dowels - Flywheel
    Removal 1. NOTE: Take care not to damage the flywheel dowel holes or the surface areas around the flywheel dowel during removal. Remove the flywheel dowels by using a drift pin where the flywheel dowel is installed in an open hole and a pair of lockin ...

    Brake System (Description and Operation)
    Component Locations +   The vehicle is equipped with a vacuum-assisted or a hydro-boost power braking system. The braking system is a front-to-rear split hydraulic system. The front wheel brakes utilize a dual piston brake caliper and disc brake sy ...