Ok, I a getting ready to put the oil pan back on. I cleaned the oil pump and am cleaning up the old gasket etc. Then I notice the (what I assume is the) rear main bearing cap has several huge cracks in it. It looks like they are near the bolts like someone overtightened them or something. I remember the PO told me they had a lot of trouble getting the seal to stop leaking there.

Now, these cracks can't be good can they? What do I do? Can I replace just the cap and the lower part of the seal? Is the bearing involved too? Are there different size bearings? Will this ever end?

54 3100 with 235
62 flatbed dump C60 with 261