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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Question for Gerald J

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tld nc

11-05-2007 18:00:54




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Which of the Northern hydraulic pumps (brand,model #,etc.) did you use to run your front loader on the MF 135?

Thanks for your help.

Thomas




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135 Fan

11-06-2007 09:45:35




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 Re: Question for Gerald J in reply to tld nc, 11-05-2007 18:00:54  
5 GPM seems pretty slow. Not much faster than the 3 pt. pump. The industrial models used a 17 GPM pump. I would think a pump somewhere in the middle would be a better choice. The only reason I say this is because if you are going to the trouble to hook up a front pump, you don't want to be disappointed because it is too slow. A 10 to 12 GPM pump could have the same mounting holes and physical size so it wouldn't be any harder to mount. Just my opinion. Dave

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Gerald J.

11-06-2007 14:03:12




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 Re: Question for Gerald J in reply to 135 Fan, 11-06-2007 09:45:35  
It all depends on the diameter of the loader lift cylinders. Those on my MF-236 loader are not controllable with a big pump without sandpapered finger tips running the valves. All it does it jerk and leap about. Actually with the 4 gpm pump, I found it nicest to run the engine down about 1200 to 1500 rpm to have good control.

The loader originally had a PTO pump, I suspect a big one like 22 gpm and that was hardest to use and running the cylinders to the stops slipped the PTO clutch which wasn't good for the PTO clutch.

I have that loader on my JD 4020 now (changed the loader valve to closed center) and I have throttle valves on the 4020 for each external load.

The internal 4020 valves are also set to about 5 gpm according to the shop manual so a typical 3" x 8" implement cylinder will take a few seconds for the full stroke, rather than taking less time than the operator's reaction time.

The lift cylinders on my loader are probably 2.5" diameter. Less than 4 gpm did it fine.

Gerald J.

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135 Fan

11-07-2007 11:16:24




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 Re: Question for Gerald J in reply to Gerald J., 11-06-2007 14:03:12  
It might depend a lot on the type of control valve used for the loader. I have a seperate control valve on mine that has very good metering. I know some tractor valves aren't very smooth and for a loader you need better control. 5 GPM with 2 1/2 inch lift cylinders is pretty slow. I have 2 inch cylinders on my loader and it's too slow for anything other than a few buckets. Dave



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Gerald J.

11-07-2007 11:57:55




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 Re: Question for Gerald J in reply to 135 Fan, 11-07-2007 11:16:24  
I much prefer a bit slow to ripping the loader off the tractor with strong valve motions while wearing gloves over my bass playing finger calluses.

Gerald J.



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Gerald J.

11-05-2007 21:40:24




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 Re: Question for Gerald J in reply to tld nc, 11-05-2007 18:00:54  
It was a 5 gpm at 1800 RPM that could be used as a pump or a motor and either direction. Cost about $95 several years ago. I don't have a northern catalog handy at the computer.

Gerald J.



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Gerald J.

11-06-2007 07:57:22




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 Re: Question for Gerald J in reply to Gerald J., 11-05-2007 21:40:24  
I looked late last night. Its 4 gpm at 1800 rpm, runs either direction, runs as a motor or as a pump. Rated to 3000 rpm or faster, the largest of the group, the only pump group that runs either direction or as a motor. $119.95.

Gerald J.



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