ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 5-64 (d) Measure outer diameter of all respective main bearing journals at several points around journal.  Refer to Table 5-5 for values. Table 5-5.  Crankshaft and Main Bearings Specifications. Item Specification Crankshaft End Play (Thrust Bearing Clearance) Engine With Two-piece Thrust Bearing 0.002- 0.010 in. (0.05 - 0.25 mm) Main Bearing Journal OD 3.1229 - 3.1240 in. (79.324 - 79.350 mm) Main Bearing Assembled ID 3.1256 - 3.1273 in. (79.391 - 79.433 mm) Main Bearing-to-Journal Clearance 0.0016 - 0.0043 in. (0.041 - 0.109 mm) Main Bearing-to-Journal Width 1.5335 - 1.5365 in. (38.952 - 39.028 mm) Thrust Bearing Overall Width 1.527 - 1.530 in. (38.79 - 38.87 mm) Maximum Main or Rod Journal Taper 0.0004 in. (0.010 mm)   Maximum Main or Rod Journal Out-of-Roundness 0.0002 in. (0.005 mm) Undersize Main or Rod Bearing Available (0.25 mm) (0.010 in.) Main Bearing Bore Specifications: ID Without Bearing Inserts 3.3250 - 3.3260 in. (84.455 - 84.481 mm) Bore Centerline-to-Top Deck of Block 13.3029 - 13.3059 in. (337.896 - 337.972 mm) Torque Values: Main Bearing Cap Screw 100 lb ft (135 Nm) Piston Cooling Orifices 8 lb-ft (11 Nm)