Platigauge the mains and rod ends.. Usually there or the oil pump is weak. If wear but acceptable range, roll in new bearings. Usually one main cant be changed, due to pressure on the thrust bearing main. Oil pressure will come back up. Lots of times you can get .003 over mains for worn engines.. oversized just a bit to tighten up the engine, but not enough to have to turn the crank. However next step will be oil pump due to volume.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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