Piston Inspection

Fig 1: Identifying Special Tools

Courtesy of FORD MOTOR CO.

CAUTION: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.

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.

Fig 2: Inspecting Piston
Courtesy of FORD MOTOR CO.
Use the Piston Ring Groove Scraper to clean the piston ring grooves.

Fig 3: Cleaning Piston Ring Grooves Using Piston Ring Groove Scraper
Courtesy of FORD MOTOR CO.
- Make sure the oil ring holes are clean.