In my attempt to get my wife's tiller up and running as quick as possible, I decided to take what I thought was a short-cut and completely swap over the PTO shaft and brackets from my roached-out 145 Closed-Side (CS) to her nicely restored 145 Open-Side (OS.) As some of the more knowledgeable folks here can already guess, I have hit a few issues. Please forgive my terminology, I'm a Jeep guy. I'm still trying to learn the correct tractor nomenclature... ;)
#1: The PTO shaft interfered with the lever-arm (pittman arm) of the pinned-on steering arm assy, regardless of which PTO pulley bracket I had mounted to the block. I solved this issue by swapping and drilling the key/clamp style steering arm from the CS. The PTO shaft was then able to run behind the steering arm, but this also created a new problem....
#2: The steering linkage to the front wheel now hits the tub since the key/clamp style steering arm sticks out farther from the frame rail than the old style. I tried mounting the linkage to the back side of the arm, but then the rod hits the frame rail.
The tub from the CS didn't match the foot mounts for the OS, so I couldn't swap tubs. I ended up taking a cutting wheel to the OS tub in order to create reliefs for the pillow block bearing and the steering rod linkage. I'll be bending some new metal this summer to weld it in and cleanly cover it.
So now I'm left with the last problem, and that is the PTO shaft has a slight downward angle towards the front of the tractor. I don't really think this will be an issue since many threads here talk about the shaft normally operating with a "slight bend" in it due to the design of the tensioner and mounts. I'm wondering if the angle is due to the 12hp engine? Is the 12hp a little shorter than the 14hp this tractor is supposed to have?
Does anyone have a good source for PTO small parts like bearings and retainers and such? Also, any tips on making the wood-block bearings that this tractor is supposed to have?