TM 9-2320-363-34-2CRANKSHAFTREPLACEMENT(CONT)W A R N I N GTo prevent injury, compressed air will not exceed 30 psi (207 kPa). Useonly with effective chip guarding and personal protective equipment,goggles, shield, and gloves.Adhesives, solvents, and sealing compounds can burn easily, can give offharmful vapors, and are harmful to skin and clothing. To avoid injury ordeath, keep away from open fire and use in well-ventilated area. Ifadhesive, solvent, or sealing compound gets on skin or clothing, washimmediately with soap and water.1.CLEAN OUT CRANKSHAFT OIL PASSAGES WITH BORE BRUSH. CLEAN CRANKSHAFT,WITHBEARINGS, AND MAIN BEARING CAPS WITH DRYCLEANING SOLVENT AND DRYCOMPRESSED AIR.2.USE GENERAL CLEANING METHODS TO CLEAN ALL PARTS (PAGE 2-30).C A U T I O NVibration damper must be replaced when crankshaft is replaced. Failure to doso could result in premature crankshaft failure.MakeblockEacheachNOTEsure all main bearing saddles and thrust bearing counterbores in cylinderare clean.upper main bearing shell is grooved with oil hole. Register oil hole inupper main bearing shell with oil hole in each main bearing saddle ofcylinder block.Install main bearings in sets only. Do not mix old and new main bearingon same journal. If old bearings are installed, they must be installed inshellssamejournal they were removed from.1.INSPECT CRANKSHAFT TIMING GEAR KEYWAY FOR EVIDENCE OF CRACKS OR WEAR ANDREPLACE CRANKSHAFT IF EVIDENT.12-46
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