TM 9-2815-225-34&P 3-39.  PISTON, CONNECTING ROD, AND BEARING REPAIR (Contd) LOCATION/ITEM ACTION REMARKS c.  Inspection (Contd) 9. Piston pin (2) Using suitable micrometer, Discard if out-of-round more than measure outside diameter. 0.001 in. (0.025 mm), or if less than wear shown below: Wear Limit  ................................................................. 1.9985 in. (50.762 mm) New Minimum  ............................................................ 1.9988 in. (50.769 mm) New Maximum ............................................................ 1.9990 in. (50.775 mm) 10. Connecting rod (5) Inspect surface area for nicks, Discard all connecting rods (5) and connecting rod cap (7) dens, and gouges. that have cuts, scratches, or other damage that is deeper than approximately 0.03125 in. (0.7938 mm) on I-beam. 11.     Connecting rod (5), a.  Assemble. Refer to step 19 and accompanying connecting rod cap (7), and Illustrations with torque values. two rod screws (8) b.  Inspect for cracks using magnetic method: (1) Check rods (5) for cracks Apply 1-1/2 percent wet solution using 1800 ampere AC current or while current is on.  Make visual 1500 ampere DC current applied inspection after each application longitudinally between plates. of current.  Pay particular atten- tion to shaded critical areas shown in illustration.  Discard con- necting rod assembly (4) if any cracks are detected. (2) Check rods (5) for cracks using 3000-3400 ampere AC or current 2600-2800 ampere turns DC. 3-180