TM 9-2815-225-34&P 3-39.  PISTON, CONNECTING ROD, AND BEARING REPAIR (Contd) LOCATION/ITEM ACTION REMARKS c.  Inspection (Contd) gauge. 8.   Piston (1) (Contd) d.  Using suitable micrometer, Ensure temperature is between measure piston skirt diameter at 70-90°F (21-32°C).  Take angles to piston pin bore. measurements at points A, B, and C. Discard if not within limits shown below: MINIMUM MAXIMUM Point A ...........................................5.477 in   ....................................5.480 in. (139.116 mm) (139.192 mm) Point C .......................................... 5.489 in.  .................................... 5.493 in. (139.421 mm) (139.522 mm) e.  Using suitable micrometer, Ensure temperature is measure piston pin bore. between 70-90°F (21-32°C).  Take measurement in area D.  Discard if more than wear limit shown below at 70°F (21°C):  Add 0.0005 in. (0.013 mm) per 10°F (-12°C) up to 90°F (32C). Wear Limit  ................................................................. 2.0000 in. (50.800 mm) New Minimum  ............................................................ 1.9985 in. (50.762 mm) New Maximum ............................................................ 1.9990 in. (50.775 mm) 3-178