Connecting Rod Bushing Diameter

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Using a suitable solvent, thoroughly clean the connecting rod and cap.
Mark each connecting rod and its corresponding cap.
Use a telescoping gauge and a 25-50 mm (1-2 in) micrometer to measure the inside diameter of the piston pin bushing. Measure and record the piston pin bushing as indicated.
- Measure the piston pin bushing again 90 degrees from the 1st measurement. Measure and record the piston pin bore.
- Install a new connecting rod if not within specification. For additional information, refer to SPECIFICATIONS .
  
  Fig 1: Identifying Inside Diameter Of Piston Pin Bushing
  Courtesy of FORD MOTOR CO.
Measure the piston pin diameter in 2 directions at the points shown in the illustration. Verify the diameter is within specification. For additional information, refer to SPECIFICATIONS .
- If out of specification, install a new piston pin.
  
  Fig 2: Measuring Piston Pin Diameter Using Micrometer
  Courtesy of FORD MOTOR CO.