Piston Ring End Gap

SPECIAL TOOL(S)

Courtesy of FORD MOTOR COMPANY

Feeler Gauge Set 303-D027D81L-4201-A

General Procedure

NOTE: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore.

NOTE: Refer to general specifications in the appropriate Engine article for the appropriate specification.

NOTE: Piston rings should not be transferred from one piston to another.

NOTE: The cylinder bore must be within specification for taper and out-of-round.

1.

Use a piston without rings to push a piston ring in a cylinder to the bottom of ring travel.

Courtesy of FORD MOTOR COMPANY

2.

Use the Feeler Gauge Set to measure the top piston ring end gap and the second piston ring end gap.

Courtesy of FORD MOTOR COMPANY