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Hyd pump in H tractor

old popper

old popper

Well-known Member
I split my H and replaced the back half with one that has an MW 9 speed in it. Will this harm the "belly" pump by increasing the speed in the high side, or will it be OK? I am basically a John Deere man so I don't know about this. A fellow told me that I couldn't run the pump. YT'ers can give me the info I need. Thanks in advance. Dale.
 
It will "over-speed" the belly pump with in the transmission in high, I am not sure how long it would last in those conditions, problem not long. It might be a good time to upgrade to a live pump from a Super H, 300/350
 
It can be operated, but limit the engine speed to 1/2 of Wide open. This requires you, or the operator, to me mindful of that. Putting a stop on the throttle handle, or using a ad-on tachometer, would work. Over speeding the Pump and PTO are real issues that if ignored with a rotary mower, can kill. Jim
 
i have a 52 m with an m+w 9 speed. when in high range push the control rod all the way down. tractor has had the 9 speed since the mid 60's and never had a problem. if you are running the hydraulics, run em in low range or in high at a lower rpm. in a pinch i have run a log splitter on mine in high range at about half throttle. worked fine. i run hy-tran in the belly pump so i dont cross contaminate any other tractors.
 

I seem to remember one of 9 speed setups had an option to disconnect the belly pump when in high range, but I don't completely remember.
 
That seems like a good idea, but are the timing gears up front in the engine strong enough to run the live hydraulic pump?
 
(quoted from post at 15:36:02 05/19/17) That seems like a good idea, but are the timing gears up front in the engine strong enough to run the live hydraulic pump?
Click to expand...

I know of some Ms with the live pump added that have never had an issue with the timing gears, and I also know of a few that suffered failure.

Live pumps are great, but the original belly pump will still get the job done.
 
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