I put a Johnson Workhorse loader on my HT20D. It doesn't have room to run a belt out to the side like you do on the gas powered large frames. Using the pictures from Bob's Lawn & Garden Tractors' post called "HT20D now has a backhoe and loader" (and with some helpful advice from Bob...thank you!) I mounted the pump under the tractor and connected it to the PTO with a Universal Joint.
(I'll insert here, by the way, that I got the 1" 15 spline yokes from drivetrainamerica.com, Weasler L6 series, part number 301-0600. I came across a thread a while back where someone said they were having trouble finding a yoke for a large frame Bolens PTO. These fit nicely.)
Okay, so I got it mounted and it worked. I used the loader to push some brush into a burn pile and after a short time the pump shaft broke. I figured I must have run over a branch that popped up and hit it. So I ordered a new pump and installed it. My next task was hauling some sawdust around. I was driving on concrete into the pile of sawdust. I don't think I ran into anything this time, but the shaft broke again. So I'm thinking there is a flaw in this setup. As I look at it, there really isn't much give other than the universal joint. Maybe the front axle transmits a jolt to the PTO shaft and it's enough to cause a problem??? I'm thinking of swapping it all out for something like a Lovejoy coupling.
Any ideas? Has anyone else had this kind of trouble?
Here's a picture of the setup. I realize the shaft is at an angle, but that's just because it broke and the broken end is resting on a lip on the pump. It was straight before it broke, and when engaged it didn't wobble or vibrate, at least that I could tell.
Thanks for any help!