E 350 V10-6.8L (2007)
Piston: Procedures
Piston Inspection
Special Tool(s)
CAUTION: 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 to Bore Diameter
1. WARNING: Cover the end of the pin bore with a hand or shop rag when removing the retainer ring, since it has a tendency to spring
out. Wear eye protection. Failure to follow instructions may result in personal injury.
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.
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If out of specification, install new components as necessary.