TM 5-4320-300-146-12. BEARINGS (CONT)Location/ItemActionRemarksCLEANING OFBEARING SHELLSWARNINGSevere burns, illness, or death may result if personnel fail to handle diesel fuel properly. Observethe following precautions:* Do not inhale vapor.* Work in a well-ventilated area.* Do not use near open flame, sparks, or excessive heat.Compressed air used for cleaning shall not exceed 100 psi (690 kPa). Use goggles or face shieldfor eye protection. Do not direct airstream against skin.3.All mainWash in clean VV-F-800 diesel fuel and dry withbearing shellscompressed air.INSPECTION OFBEARING SHELLS4.Bearing shellsInspect for scoring, pitting, flaking, etching, lossBright spots indi-of babbit, signs of overheating, and bright spotscate that shellson backs of shells. Replace bearings that arehave been movingdamaged, show excessive wear, or have brightin caps.spots.5.Bearing shellIf bearing shells are free ofthicknessexcessive wear, bright spots,and damage, measure shellthickness. Shells should notbe less than 0.1230 inch(3.1242 mm) thick. If anybearing shell measures lessthan 0.1230 inch (3.1242mm), replace all bearingshells.6.Bearing shellPosition upper main bearing shells in bearingand crankshaftsupports. Lubricate crankshaft main bearingjournal prepa-journals with MI L-L-2104 oil.ration6-116
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