Ford Focus manuals

Ford Focus Service Manual: Piston Ring End Gap

Special Tool(s)

Feeler Gauge Set
303-D027 (D81L-4201-A) or equivalent

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

NOTE:

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

NOTE:

Refer to the appropriate Section 303-01 for the specification.

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.

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

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Piston Ring-to-Groove Clearance
Special Tool(s) Feeler Gauge Set 303-D027 (D81L-4201-A) or equivalent NOTE: Refer to the appropriate Section 303-01 for the specification. Inspect the piston for ...

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