Farmall H

8 years 6 months ago - 8 years 6 months ago #2968 by kbeatty
just go a good deal on a 1948 h. recent overhaul and in good overall condition. it has a hyd.line coming out of the right side of the trans case but no return line. where does the return line go back into the trans case???

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8 years 6 months ago - 8 years 6 months ago #273 by gentleben
i know very little about hydraulics but i'm betting its a one way and no return line. am sure someone else will come to the rescue that knows a lot more about hydraulics than i.

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8 years 6 months ago - 8 years 6 months ago #275 by kbeatty
thanks anyway ben i know jd's have 2 couplings for lines i thought most everything had 2

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8 years 6 months ago - 8 years 6 months ago #280 by shea
here is a pic of the hydraulics from a m. i think the h is the same.
i hope this helps a little.

johnny

http://i850.photobucket.com/albums/ab66/johnnyshea/website%20photos/mhyd.jpg

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8 years 6 months ago - 8 years 6 months ago #282 by kbeatty
thats what i needed. but isn't that where you fill the hyd system? just need to do some plumbing work? thanks johnny

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8 years 6 months ago - 8 years 6 months ago #318 by
my 41 h also has one hyd. line. most of the older tractors used a one way system. that is power up, gravity down. the second line to the rod end of the cylinder simply adds to the oil capacity of the system.

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8 years 6 months ago - 8 years 6 months ago #324 by kbeatty
thanks for the info farmalldon. how would it work with a 2 way cyl. power up and power down?

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8 years 6 months ago - 8 years 6 months ago #331 by
i'll try to get a picture of my "m" i have plumbed for a double acting cylinder. a picture is worth a thousand words.
the tractor hydraulics is ran through a open center valve such as on a log splitter. this valve is then used to operate the cylinder. the control lever on the tractor needs to be pulled and secured in the raise position.

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8 years 6 months ago - 8 years 6 months ago #345 by
here is the picture of the m. not the best. the pressure and return hoses are similar to the ones in johnny's picture. hope this helps.


http://i86.photobucket.com/albums/k87/donnohio/parts/100_1235.jpg

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8 years 6 months ago - 8 years 6 months ago #348 by kbeatty
i will try to figure that one out

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8 years 6 months ago - 8 years 6 months ago #380 by Old Iron

"kbeatty":1rkcihhx wrote: just go a good deal on a 1948 h. recent overhaul and in good overall condition. it has a hyd.line coming out of the right side of the trans case but no return line. where does the return line go back into the trans case???[/quote:1rkcihhx]

the single line is for a "one-way" cylinder (when the cylinder "extends"),... the fluid bleeds back through the same line (when the lever is pushed forwards and pressure is relieved).
in order to have "two-way" pressure, the system needs a control valve (like in farmalldon's picture), or the ih "christmas tree" valve that some farmall tractors came with. the "christmas tree" valve was an ih "option" from the dealers, and if you can find a junked h or m in a salvage yard, that has a "christmas tree" valve on it, it can easily be removed and switched to your tractor.

note: there are 2 different "types" of cylinders available, one-way and 2-way,... a 2-way can also function as a "one-way" (if only one hose is used to extend it, and a vented plug is used where the second hose would normally go),... but, a "one-way" can not function as a "2-way" because it lacks a second port.
i hope i'm making sense and didn't get myself mixed up. <!-- s:d -->http://www.grandpastractor.com.php53-25.dfw1-2.websitetestlink.com/images/icon_biggrin.gif" alt=":d" title="very happy" /><!-- s:d --> <!-- s:d --><img src="http://www.grandpastractor.com.php53-25.dfw1-2.websitetestlink.com/images/icon_biggrin.gif" alt=":d" title="very happy<!-- s:d -->

also, like farmalldon stated, the lever that engages the belly pump must be fastened back with a piece of wire to make the system work.

i'll get some pictures in the next couple of hours, so you can see what i'm talking about. <!-- s:) -->http://www.grandpastractor.com.php53-25.dfw1-2.websitetestlink.com/images/icon_smile.gif" alt=":)" title="smile<!-- s:) -->

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8 years 6 months ago - 8 years 6 months ago #381 by Old Iron
here is a picture of the "christmas tree" control valve on my farmall m.
notice how the lever that engages the belly pump is "wired back" to the christmas-tree to stay engaged.

http://i2.photobucket.com/albums/y50/bsukraw/3-8-10picturesdownloaded055.jpg

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8 years 6 months ago - 8 years 6 months ago #383 by
nice looking m still earning its keep.

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8 years 6 months ago - 8 years 6 months ago #390 by kbeatty
thanks guys i think i have it figured out now. this is the best tractor forum on the net and the people on it are great!!

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8 years 6 months ago - 8 years 6 months ago #391 by gentleben
kbeatty i agree completely. this is a great forum, always someone ready to help. johnny is working on keeping the undersiables out that peddle the smut. am sure he will have it under control soon.

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