Ford 2003 Mustang Workshop Manual page 886

SECTION 303-00: Engine System — General Information
GENERAL PROCEDURES
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 matched set and should not be interchanged.
Measure the piston pin bore diameter in two directions on each side. Verify the diameter is
within specification.
If out of specification, install new components as necessary. Refer to the appropriate
section in Group 303 for the procedure.
2003 Mustang Workshop Manual