ARMY TM 9-2815-255-24
AIR FORCE TO 38G1-95-2
MARINE CORPS TM 2815-24/4
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).
Ensure that lube oil hole in bushing (12) is aligned with bore in connecting rod.
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.
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.
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.
Inspect and clean engine block as follows:
Al! components (including piston cooling nozzles, soft plugs, and oil gallery plugs) must be
removed from the cylinder block for inspection and cleaning.
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