Mustang V8-4.6L (2009)
Piston: Procedures
Piston Inspection
Piston Inspection
NOTICE: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.
1. 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.
2. Use the Piston Ring Groove Scraper to clean the piston ring grooves.
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Make sure the oil ring holes are clean.
Piston Pin Bore Diameter
Piston Pin Bore Diameter
NOTE: Refer to the Engine system level for the specification.
1. NOTE: Piston and piston pins are a matched set and should not be interchanged.
Measure the piston pin bore diameter in 2 directions on each side. Verify the diameter is within specification.
Piston Diameter
Piston Diameter
NOTE: Refer to the Engine system level for the specification.
