Piston Inspection

Fig 1: Special Tool(s)

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: Identifying Piston Inspection Points
Courtesy of FORD MOTOR CO.
Use the Piston Ring Groove Scraper to clean the piston ring grooves.
- Make sure the oil ring holes are clean.
  
  Fig 3: Cleaning Ring Grooves
  Courtesy of FORD MOTOR CO.