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H hydraulics question

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J.C.

07-31-2007 10:33:49

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I've got a single hydraulic hose from the left side of my H to the rear. I think this is used for the "lifting" action for an implement. I think to check the hydraulic fluid there is a cap near the pulley on the right side? If so what type and how much fluid should be in there?

J.C.

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Nat 2

07-31-2007 11:50:28

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Re: H hydraulics question in reply to J.C., 07-31-2007 10:33:49

You got it. That is your basic Farmall "Liftall" system, also referred to as "belly pump" due to the fact that the pump is located in the belly of the tractor. It gives you one-way (power up, gravity down) hydraulics by pulling the lever on the right side.

There are three ports total, two on the right, one on the left. The left port and front right port provide pressure at the same time. The rear right port provides pressure after a delay.

If you need power-down for an implement, you will need to add a two-way valve to the system. Do not hook the two hoses from a modern hydraulic cylinder to two ports on the tractor, assuming that you'll get two-way hydraulics. That is a sure way to damage the system.

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Larry Daniels

09-03-2007 11:16:12

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Re: H hydraulics question in reply to Nat 2, 07-31-2007 11:50:28

My H has a selectable type valve that is near the right side of the steering column.It has the rod that goes down to the pump and three selectable positions with another two position valve that looks like a switch toward the lower left of the assembly.Does anyone know what it is and if/how it can be hooked up to gain "down pressure?

Thanks Larry

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Allan In NE

07-31-2007 17:48:56

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Re: H hydraulics question in reply to Nat 2, 07-31-2007 11:50:28

No,

There is no "delayed lift" on that left rear-pointing outlet. They are all the same.

However, the "drop" is delayed on that port.

If one wants a delayed lift, then the EXTERNAL restricted oriface is needed to be inserted in the hose line.

Allan

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Scott Rukke

10-10-2007 20:02:54

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Re: H hydraulics question in reply to Allan In NE, 07-31-2007 17:48:56

If there is no delayed lift then why does my operators manual for my H clearly state that the rear port on the left side is a "delayed lift" port.

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georgeky

07-31-2007 18:12:53

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Re: H hydraulics question in reply to Allan In NE, 07-31-2007 17:48:56

Allan, it clearly shows that in the manual too. Seems like this comes up a lot though don't it? Yes, it does have a slight delay when dropping the cultivator with or without the delayed lift valve, but without that valve all cultivator sections will raise together.

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georgeky

07-31-2007 13:29:47

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Re: H hydraulics question in reply to Nat 2, 07-31-2007 11:50:28

Nat2, Have you tried those outlets all at the same time? I have and all of mine work at the same time. I have a delayed lift valve that attaches in the line itself that delays the lift from one port. It is for lifting the rear cultivator after the front has been raised.

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georgeky

07-31-2007 11:09:09

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Re: H hydraulics question in reply to J.C., 07-31-2007 10:33:49

J. C. it can use a wide variety of oils. Hy-Tran or equivelent, AW 32 hydraulic oil or plain non detergent motor oil works fine. I use SAE 30 weight non detergent in mine and have never had any problems with them. The old manuals called for 10 weight for cold weather use, and 20 as it got warmer, and 30 for hot seasons or climates. There might be a dip stick under the cap if not it holds 6 quarts total. It wont hurt it to fill until you can see or touch the oil with your finger. If there is no dip stick it may be in the bottom of the resivoir it is common for them to fall in there. It won't hurt it if it is, but you may be able to get it out with a magnet.

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