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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 (4) Using inside micrometer, measure rod bore diameter in two places, 90 degrees apart.  Rod bore diameter should be 1.625 to 1.626 inches (41.29 to 41.30 mm). CAUTION Ensure that lube oil hole in bushing (12) is aligned with bore in connecting rod. (5) Using driver (JD-286), install bushing (12) in connecting rod (4).  If required, hone bushing to obtain piston pin clearance of 0.0008 to 0.0024 inch (0.02 to 0.06 mm). 3-47.3.  Engine Block. WARNING Cleaning solvent is flammable and toxic to eyes, skin, and respiratory tract Skin/eye protection required.  Avoid repeated/prolonged contact. Good general ventilation Is normally adequate. WARNING Compressed air used for cleaning can create airborne particles that can enter the eyes.  Pressure will not exceed 30 psig (207 kPa).  Eye protection required. a. Inspect and clean engine block as follows: NOTE Al!  components  (including  piston  cooling  nozzles,  soft  plugs,  and  oil  gallery  plugs)  must  be removed from the cylinder block for inspection and cleaning. (1) Inspect each piston cooling nozzle (1, FIGURE 3-136) to make sure it is not plugged or damaged.  Cooling nozzles deliver approximately 0.4 gallon per min (1.50 liters/min) oil flow. FIGURE 3-136.  Inspecting piston Cooling Nozzles 3-197


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