Special Tool(s)

SPECIAL TOOL(S) CHART

Tool No.	Illustration	Description
ST1279-A	Courtesy of FORD MOTOR CO.	Piston Ring Groove Cleaner 303-D033 (D81L-6002-D) or equivalent

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 1: Inspecting Piston
Courtesy of FORD MOTOR CO.
Use the special tool to clean the piston ring grooves.
- Make sure the oil ring holes are clean.

Fig 2: Cleaning Piston Ring Grooves

Courtesy of FORD MOTOR CO.