Piston Inspection

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Illustration	Tool Name	Tool Number
Courtesy of FORD MOTOR CO.	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: Cleaning And Inspecting Ring Lands, Skirts, Pin Bosses And Tops Of Pistons

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 2: Using Piston Ring Groove Scraper To Clean Piston Ring Grooves

Courtesy of FORD MOTOR CO.