TM  10-3930-638-24&P 4-2.   ENGINE   MAINTENANCE   (cont) d. Crankshaft and Main Bearings (cont). STEP LOCATION ITEM ACTION REMARKS INSPECTION  (Cont) 10 cont) b. TWO cap screws (3) Install Tighten to 90-100 pounds foot torque c.  Replacement  main Check bore At three angular locations as shown. Dia- bearing cap (4, 5, diameter meter shall be 3.066 to 3.067 inches 6, or 7) If bore diameter is out of tolerance or main bearing cap is shifted side wise, perform d, below; otherwise proceed to f below. d. Two cap screws (3) Remove 4-31