I'm converting my hydraulic pump from another project to a pto pump for my log splitter, backhoe, etc.. I purchased a coupler from surplus center to adapt the 3/4 pump shaft to the pto splines, and made a temporary mount to hold the pump. The setup worked, but I noticed the pump was twisting on the mount. I removed the pump and inserted a straight 3/4 rod and it seems they didn't bore it correctly.
YouTube - P1011771.MOV
Is there any other sources for this type of adapter. The adapter is shot now and I doubt the will refund it.
https://www.surpluscenter.com/item.asp?UID=2009112720531826&catname=&qty=1&item=1-2456
I did exactly what you are doing, I mounted a pump, amost identical to yours to my PTO.
I used the surplus center quick attach coupler with the keyed round shaft to 6 spline.
I built a plate which I mounted my pump to, and then used the adapter to tie the pump to the PTO shaft.
I did not rigid mount my bracket as in the end my PTO shaft was not absolutely straight and had a tiny wabble to it, I actually replaced my PTO shaft to get it straighter but still not perfect.
I pinned my mounting plate to the bottom bracket on my three point which on my tractor was a plate with a hole in hit. I then bunggied (spelling) the pump to the tractor so that it would not walk off the spline and fall off the back of the tractor. (my PTO shaft did not have a ridge in it for the quick release adapter to click into, it if had, the bungies would not have been needed.
The key to a PTO pump to to stop if from spinning under load, that is about all you need to worry about. I've seen some use a chain to stop the spinning, You really do not need to support it, just stop it from spinning.
My set up ran a backhoe and I used it for years. The only problem I ran into was one time I let the set screws loosen up and the shaft spun, I replaced key and did not let the set screws loosen up after that.
Please feel free to PM if I can help. It is easy in the end and works great while saving tons of money over a PTO pump.
Joel
