17-09-2020, 08:50 PM
Hi Jamie
i doubt if main bearings ever fail by conventional pitting but even so any such failed bearings are not obstructed from rotating. To do so clearance has to somehow decrease. Very old long unused rusted bearings may obstruct. But where there is resistance it invariably proves to be a flake of gum or somesuch rolled into the track or a brush bristle or somesuch. In the right light all ball and track surfaces can be examined. Should be no dents, pits, rust, or rolled out dirt. Can often remove any crushed paint or gum with a pin.
i doubt if main bearings ever fail by conventional pitting but even so any such failed bearings are not obstructed from rotating. To do so clearance has to somehow decrease. Very old long unused rusted bearings may obstruct. But where there is resistance it invariably proves to be a flake of gum or somesuch rolled into the track or a brush bristle or somesuch. In the right light all ball and track surfaces can be examined. Should be no dents, pits, rust, or rolled out dirt. Can often remove any crushed paint or gum with a pin.