Hydraulics question

Farmall H, HV & Super H, 300 & 350, 1939-1958

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pokitisme
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Hydraulics question

Postby pokitisme » Wed May 20, 2020 12:54 pm

I've got like a 19 39 or 36 or 32 Farmall H. I don't remember the year. I've got a three-point hooked up on it with two hydraulic cylinders. One for each side of the three point. I'm only using the hydraulic bar attached to the Tractor. So here's what my problem is. I can pull the bar with no load on the three-point it will lift up perfectly fine it will retract perfectly fine. Depending on the weight of the load it will either only raise it a few inches or not at all. I have a brush hog it would lift about 2 in off the ground. I have a 3 point boom which lifted perfectly fine. And I have a 7 foot heavy duty blade which I could not lift at all with the 3 Point boom. Cousin tells me that it could be the hydraulic pump. I know it's vague information but I still haven't figured out how to upload pictures to this site.. I have heard something about weight limits like 500 lb for earlier models or something
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Urbish
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Re: Hydraulics question

Postby Urbish » Wed May 20, 2020 1:32 pm

The early H's developed fairly low pressure (about 500 psi). It's possible that the 3-pt implements you are trying to lift are too much for the system. You could always plumb in a pressure gauge to see what your line pressure is and determine whether or not it is a problem with the pump itself.
Last edited by Urbish on Wed May 20, 2020 2:08 pm, edited 1 time in total.
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Urbish
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Posts: 2058
Joined: Sat Sep 07, 2013 3:45 pm
Zip Code: 48158
Tractors Owned: ~
1958 International Cub LoBoy
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1953 Willys CJ3B

Cub-193 Moldboard Plow
Cub-54A Leveling and Grader Blade
Cub Loboy L-54 Leveling and Grader Blade
Unknown 5' Single Gang Disc Harrow
Circle of Safety: Y
Location: Manchester, MI

Re: Hydraulics question

Postby Urbish » Wed May 20, 2020 1:41 pm

Is it the 3-point shown in this screenshot from one of your youtube videos? Or is this on a different H?
Attachments
3-point H.JPG
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Urbish
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Cub-193 Moldboard Plow
Cub-54A Leveling and Grader Blade
Cub Loboy L-54 Leveling and Grader Blade
Unknown 5' Single Gang Disc Harrow
Circle of Safety: Y
Location: Manchester, MI

Re: Hydraulics question

Postby Urbish » Wed May 20, 2020 1:45 pm

Also, in one of your previous videos you mention having to refill the hydraulic oil. What kind of oil did you use?
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Posts: 2058
Joined: Sat Sep 07, 2013 3:45 pm
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Tractors Owned: ~
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Cub-193 Moldboard Plow
Cub-54A Leveling and Grader Blade
Cub Loboy L-54 Leveling and Grader Blade
Unknown 5' Single Gang Disc Harrow
Circle of Safety: Y
Location: Manchester, MI

Re: Hydraulics question

Postby Urbish » Wed May 20, 2020 2:04 pm

Jim

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pokitisme
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Re: Hydraulics question

Postby pokitisme » Sat May 23, 2020 1:26 am

It's a double piston three-point it's another tractor that I got for like six hundred and fifty bucks. I think the double piston set up might be too much for it. Yeah the idea about the pressure gauge is a good one. I'll see if I can find one somewhere. Of course it could be my own stupidity LOL I'll see if I can upload some pictures here.
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Re: Hydraulics question

Postby Eugene » Sat May 23, 2020 10:50 am

You might try another You Tube video.

Pictures of the hydraulic cylinders, number of hoses connected to each cylinder, control valve set up.

Once the implement is lifted, will they hydraulic system hold it in place,or will the implement slowly sink/fall?

Could be several problem areas; control valve, leaking cylinders. Faulty hydraulic pump would be down on my list of possibilities.
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