The transmission shop (we're talking again ....) said these KM145 5-speeds are known to be weak. Says the input shaft bearing goes out a lot.
As I'm now on my second one, after the previous owner rebuilt the first one at 50k miles, and working on a third, I'm wondering if this is in fact or that there might be something else that is making the problem?
He also said he sees a lot of these with pitted 5th gear from them not having a grounding strap from the tranny to the frame; at some spinning speeds they actually create an electrical arc which pits out the gear. He suggested I ad one to mine which will help it if he locates a new gear and can fix it.
Has anyone found a way to make the KM 145 a stronger transmission?