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i just took one apart last week at 800,000 and they were still not bad except for number three main ,i would recommend to send in an oil sample for anaylizing periodically,bearing life varies from one operator to another,how heavy the trucks loads are and dust cond,i would say normally at 1000,000

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13y ago

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Q: When should you replace rod and main bearings on cummins n14 select plus?
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