F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
6. Check the side clearance of the oil control ring groove.
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Place the outer edge of the new ring in its respective ring groove.
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Roll the entire ring around the piston in its groove. Make sure the ring can move freely in its groove.
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Use the Feeler Gauge to check the side clearance. Install a new piston if it is not within specifications.
7. Use a 25-50 mm (1-2 inch) micrometer to measure the piston pin diameter in 2 directions at the points shown. Verify the diameter is within
specification.
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If out of specification, install a new piston pin.
8. Using a 1-2 inch telescoping gauge and a 25-50 mm (1-2 inch) micrometer, measure each piston pin bore inside diameter, at 2 locations 90 degrees
apart. Record the reading.
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To check the piston pin clearance, subtract the piston pin outside diameter from the piston bore inside diameter. If the clearance exceeds
specifications, install a new piston pin and recheck the clearance.
