BEARINGS (CONT) - TM-5-4320-300-14

TM-5-4320-300-14 Pump Centrifugal Self-Priming Gasoline Engine Driven; 6-Inch 1500 GPM Capacity At 60 Foot Head Manual
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TM 5-4320-300-14 6-12. BEARINGS (CONT) Location/Item Action Remarks b. Rotate crankshaft about 30 degrees from bottom dead center; then install lower bearing shells and caps. NOTE Bolts will seat better if bolt caps are rapped sharply with a soft hammer after being installed hand tight. c. Torque front and intermediate main bear- ing cap bolts to 120 to 130 ft lb (163 to 176 N.m), in an alternating pattern as shown. d. Torque rear main bearing cap bolts to 40 to 50 foot pounds (54 to 68 N.m). e. Remove all bearing cap bolts and caps. Use lifting device to remove crankshaft, and re- move the flattened plastic strip. f. Compare width of flattened plastic strip at its widest point with graduations on envelope gage to determine clearance encountered. The number within the graduation on the envelope indicates bearing clearance in thousandths of an inch. 9. Clearance The clearance between a crankshaft journal and limits its bearing shell should be not greater than 0.006 inch (0.1524 mm). Replace all bearing shells if any must be replaced. 6-118

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