Navigator 4WD V8-5.4L VIN 5 (2006)
2. Use a feeler gauge to measure the top piston ring end gap and the second piston ring end gap.
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Piston-Ring-to-Groove Clearance
1. Inspect the piston for ring land damage or accelerated wear.
2. Measure the piston ring-to-groove clearance.
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If out of specification, install new components as necessary.
Piston-Pin Diameter
1. Measure the piston pin diameter in two directions at the points shown. Verify the diameter is within specification.
