Piston Inspection

SPECIAL TOOLS DESCRIPTION CHART

Scraper, Piston Ring Groove 303-D033 (D81L-6002-D) or equivalent

NOTE: 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 1: Identifying Piston Inspection Points
Courtesy of FORD MOTOR CO.
Use the Piston Ring Groove Scraper to clean the piston ring grooves.

Fig 2: Cleaning Piston Ring Grooves

Courtesy of FORD MOTOR CO.