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15. Engine Removal, Inspection & Installation Piston Ring Free End Gap and End Gap z Before installing piston rings, use vernier caliper to measure the free end gap of each ring, and then fit z Use thickness gauge to measure each ring end gap, if any ring has an excess end gap, replace the
Piston ring free end gap limit: nd ring: 9.5mm nd ring: 0.60mm Thickness gauge
Piston Pin and Pin Bore z Use a bore gauge to measure the inner diameter of piston pin bore. z Use micrometer to measure outer diameter of piston pin. z If out of limit, replace both piston and piston pin.
z Use micrometer to measure piston pin outer diameter at three points Micrometer (0-25mm)
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