ok, I get that you say the wires go back to the windings, but now that I have these little rectifiers, and a nice chunky heat sink, can anyone clue me in a bit more on which wire goes where?  I labeled my current (dead?) one, and my new one still on the bench.  see attached.   

My ability to dig under the box and figure out which wire goes to the windings is a bit low.

The flywheels are the heavy flywheel option. They were usually specified for generator duty but I also suspect the were used anywhere there was a large variable load.

This Lister has massive flywheels with the "kidney" shaped holes, are these normal? Also has her own radiator.

Hi Black Dog, the center main bearing can be reground, undersized bearings are available here in 10 thou increments up to minus 40 thou. Not much you can do about #1 bearing as the bush style bearings only come in one size. It might be possible to build up the worn area by welding or metal spraying then regrinding, could be expensive. Here in Australia a replacement crank is listed at six hundred and twenty five Australian dollars. Don`t know what that would be in Canadian Dollars.

38ac would be able to tell you what the wear limits on the crank journals are, don`t forget this is a slow speed engine so the wear limits are quite generous.

I suspect the broken oil pipe you found in the sump has starved some of the bearings of lubrication.

Bob

Hi BD

FWIW you can see my thread here, onwards: https://listerengine.com/smf/index.php?topic=8320.msg100396#msg100396

Burned babit is always an issue, but nothing that cant be fixed.

Take care.
VP