Farmall m live hydraulic pump diagram

I am looking for a manual or parts diagram for a Farmall M live hydraulics pump. This is the pump that goes between the engine and the distributor. I have an oil leak from the pump when under load. Not from the hoses or fittings. Hoping a gasket or something
 
There is either a Cesnna or a Thompson pump. There are gasket kits, but not rebuild kits. They can be sealed up, but not rebuilt. Search for one or the other, Like cessna hydraulic pump rebuild kit Jim
 
Being it's a M. it could also be a m&w pump. I have one on my M.


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(quoted from post at 20:57:44 10/03/23) I am looking for a manual or parts diagram for a Farmall M live hydraulics pump. This is the pump that goes between the engine and the distributor. I have an oil leak from the pump when under load. Not from the hoses or fittings. Hoping a gasket or something
 
This my not help, but can you see where the leak is? I had a John Deere B that leaked hydraulic oil and one day I was hooked up to the #5 mower and I was squatted down and I pulled the hydraulic lever and under load the pump housing opened up and squirted out oil. I could not see the cracked housing until it went under load and opened up and out came oil.

Hope I explained this good enough.
Dennis
 
Hello coltom welcome to YT! First off is it leaking
engine oil when the engine is being worked or
hydraulic oil when hydraulic pressure is being used? I
will assume the latter. The Ms obviously did not
originally have live hydraulics and the Supers so not
show a break down of the pumps. I have attached the
manufacturers online parts catalog for a Farmall 400
they use the same pump. In the Hydraulics section,
look at subsection 371 and 373. Those sections will
help you ID which pump you have. The one version has
a block that bolts up under it and it is possible the leak
you have is from them. They can easily be replaced
with common hydraulic orings. YT has seal kits for
them, find your pump number and call them.
Just FYI, that link will also allow you to access the
parts catalog for your M, just type Farmall M in the
search bar. Also FYI Many parts are unavailable and
many that are have outrageous prices. Also their site
does not work well when viewed on a phone, or at least
not an iPhone.
CNHI Farmall 400 online parts catalog
 

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