WD hydraulic and other pumps?

I brought home a WD yesterday with a trip bucket loader on it. The previous owner started putting 2 way cylinders on for the bucket. If I would change lift cyclinders to 2 way, my question is could I rig up a pump off the PTO to power a hydraulic pump off an old swather. I have a couple Owatonna and John Deere hydraulic pumps to choose from. Do you guys think it would work? would the pump have enough power to run the loader and bucket. Yes I would probally have to add an oil reservoir. Im interested in opinions has anybody out their done something similar? Thanks for looking.
 
Real hard to say yes or no. One would need to find out what the rated PSI is for the pump and the GPM. For a loader you want 1500 plus but not a super high GPM. 8-10 GPM is a good number so it is not to fast or to slow. To fast and one can end up with the load on your head and then dead to slow well takes forever to get any thing done
 
From your post on the JD forum you are looking at doing a big upgrade to the loader. With that in mind finding a pump set up to run off the engine crank (which would be live all the time and not tie up your PTO) or going to a direct mounted PTO shaft pump would seem to be your best choices. You say you are planning to change/add cylinders and will need a reservoir of fair size. You will also need a loader control valve (two spool at least) with relief that is right for your new system, if it is not there yet. You might as well get a proper pump to supply your modifications in the beginning, rather than later. I don't think the swather pump is the answer to your need. JMHO.
 
The surplus center has many pumps that will work. But you do not want to many GPM so around 10GPM is about right. Seen more then one person hurt due to replacing there old hyd pump with something with to many GPM and end up with a load in there lap
 
I am thinking along the same line as old, 10 to 12 gpm. You might be ok with a bit more volume than that depending on the diameter of your cylinders. Larger diameter will need more volume to travel the same distance in the same time as smaller diameter cylinders. You don't want to go to large or you may bend the loader arms. You should figure out the lift the current cylinders develop (area x pressure) and size new to match the same lift force. They will be some bit larger diameter as your new pump will likely be a lower operating pressure than the WD's pump. A pump that mounts by sliding right on to the PTO shaft is about the easiest hook up.
 
I think the biggest problem with a crank driven pump up front is the lack of room to mount it on a WD.
 

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