I acquired a JD 300 with a blown K341 Kohler which i just rebuilt and had machined to make it better than new (smoothed out the intake & exhaust ports to allow better flow, better valve springs etc.) and got it in the tractor to find out the previous owner BS'd me (which I should have known when he said he didn't tow it ) but now I find the trans axle is shot. I am looking into the option of making it a 4x4 articulated tractor but my question now is: What are the thoughts on using the engine to strictly drive a bigger hydraulic pump and running 2 or 4 hydraulic motors to run the wheels/axles? I have been looking at Northern Tools website checking out different pumps and trying to decide if 1 pump per wheel or make solid axles and using 2 pumps and a chain drive to the axle so I could fine tune the ground speed for what I am looking for - weather that may be low speed high torque for pulling a plow or a little faster for parades etc. Am I on a decent train of thought or is this ludicrous?
I'd like to have the hydraulic output and capacity to run a 3pt hitch, And have front outputs for a blade or other front mounted attachments. I'm thinking a 16GPM at 3000RPM and 15.8 GPM 2575PSI motors rated for 2125in-lbs (177ft lbs) might be a good start but my biggest question is that enough torque or is that going to stall out under heavy load especially if I was to do a solid axle set up with a chain drive which would multiply the torque.
Thanks guys. I'm kind of a Hydraulic Newb when it comes to building a system