The input shaft came out in good shape overall, but the splines are suspect. The splined coupler which ties it to the layshaft was damaged by heat and by impact with something else, though who knows with what. The splines on the input shaft show just a little discoloration, almost as if the coupler deposited some material onto them. The rest of the shaft looks like it never even overheated. The color is as it was from the factory – it doesn’t even have any gear lube burned on it, and the Pegasus part number (written in Sharpie marker) is still there! It is too good to demote it to a clutch alignment tool, but I’m not sure it could be trusted to survive a full season or more. Into the spares bin it goes. Now I even feel smart for keeping the original splined coupler that we replaced when the original input shaft broke in August.
I’ll be continuing the engine teardown tonight. I hope to get far enough in to find the cause of the low oil pressure.
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