TM 9-2320-365-34-2e. Installation.CAUTION• Ensure main bearing tabs engage grooves in block and cap. Permanent damage to engine could occurif bearings are not properly installed. Failure to comply may result in damage to equipment.• Ensure new bearings are installed as a matched set to each corresponding journal and cap. Permanentdamage could occur if bearings are not from same set. Failure to comply may result in damage toequipment.NOTENumber six bearing is crankshaft thrust bearing. Upper (or block) half of main bearings two, three, five,and six are slotted for oil flow to connecting rod bearings. Ensure no oil is allowed on back of bearings.(1) Install thrust bearing (1) in No. 6 journal of cylinder block(2).(2) Install other half of thrust bearing (1) in No. 6 crankshaftmain bearing cap (3).(3) Perform step (1) for six remaining main bearing halvesin journals of cylinder block (2).(4) Perform step (2) for six remaining main bearing halvesin corresponding crankshaft main bearing caps (3).CAUTIONDo not get oil on backs of main bearinghalves. Failure to comply may result indamage to equipment.(5) Lubricate face of all main bearing halves (1) in cylinderblock (2).(6) Lubricate face of main bearings (1) in crankshaft mainbearing caps (3).20-37
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