Front mount loader pump

Harper · Nov 2, 2019

It appears that the loader pump on my Massey Ferguson 20C has given up. It makes a terrible noise and will not lift the loader. The original pump is 19 gallon/minute MF part# 2750127M91. In looking for a replacement I cannot find an exact match. This site has a 21.5 gallon/minute pump that appears to be a good substitute. Part #2750128M91. My question is what kind of issues could arise from the extra 2 1/2 gal/minute?

Bob · Nov 2, 2019

(quoted from post at 00:24:51 11/02/19) It appears that the loader pump on my Massey Ferguson 20C has given up. It makes a terrible noise and will not lift the loader. The original pump is 19 gallon/minute MF part# 2750127M91. In looking for a replacement I cannot find an exact match. This site has a 21.5 gallon/minute pump that appears to be a good substitute. Part #2750128M91. My question is what kind of issues could arise from the extra 2 1/2 gal/minute?

" It makes a terrible noise"

Sounds more like a sheared coupling or even a restricted oil supply than a hydraulic pump that has "given up".

Check the simple stuff before throwing the big $$$$ at it!

coshoo · Nov 2, 2019

I'm with Bob on checking out what you have first. As for the add'l capacity, it will make no difference, except the loader will operate slightly faster. I have a 16 GPM pump on a loader that should have about a 10, and the speed is a little irritating but that's about the only problem.

caterpillar guy · Nov 2, 2019

Check it out first. Might be a stripped spline. I never had a pump to big yet. I wouldn't worry about a couple of gallon per minute.
Our Cat has a 50 GPM at 2000PSI like that set up. Built in the later 50's.

old · Nov 2, 2019

Get some to pull the control handle while you watch the pump. Very good chance the pump drive has gone bad at the crank shaft pulley hub and it slipping. I have to fix one of those on an 8N I have. This site has the parts. By the way do not replace just the diver shaft but replace the hub and shaft or you will be doing it again in a short time. Guess how I learned that one

rlp in Co. · Nov 2, 2019

I would think that you will like the larger
pump. I have a Ford backhoe that I replaced
a 25gpm pump with a 32gpm pump. I used to
operate at 1200 RPM but now I have to
operate at 1300 RPM because it can kill the
motor at the lower RPM. I could never kill
the motor with the 25gpm pump. The backhoe
works a lot faster now too!

Steve@Advance · Nov 2, 2019

Just in case you do find a pump failure, somehow, some way, the pieces of the old pump will have to be cleaned out of the system.

Not an easy job, but cleaning it out now will be a lot cheaper than later.

Harper · Nov 2, 2019

i drained the oil and Changed the filters. The bottom suction filter was dated December 1978 so it appears that it's original to the 1979 tractor. I refilled the system, no change so I pulled the pump yesterday. Ran out of time so Monday I'll check the pump for some type of restriction and investigate the spline coupler. I starting to wonder if it's possible for there to be a restriction in the control valves.

old · Nov 2, 2019

I know of more then one person that got killed because they upped the GPM of the pump a whole lot and dumped dirt etc. on them self and or flipped the tractor. On a backhoe yes you want a bit faster but on a front end loader and nothing on behind one can flip a tractor with a fast pump

kcm.MN · Nov 2, 2019

"[i:d5b025fd7b]My question is what kind of issues could arise from the extra 2 1/2 gal/minute?[/i:d5b025fd7b]"

Increasing the GPM's at the same pressure makes your engine work harder while using more fuel.

Front mount loader pump

Harper

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Bob

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coshoo

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caterpillar guy

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old

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rlp in Co.

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Steve@Advance

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Harper

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old

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kcm.MN

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