Farmall H, HV & Super H, 1939-1954
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I am new to this forum, I need a little guidance for my '41 Farmall H lift-all. I recently purchased a new Saginaw 3 point hitch. I haven't the first idea how or where to hook this thing up. I have no lift-all manual just yet, but will acquire one in the future. Would someone have a diagram showing how? I don't know input/output or return ports. I need to remove the lift-all first to replace seals on the transmission and pump shafts . I'm sure I'll have to have new hoses manufactured. Thanks for any assistance provided.
Should be an easy question but you need to provide more information first. What exactly are you trying to hook to your Lift-All? Is it 1 or 2 one-way cylinders? two-way cylinders? Will you use the built-in Lift-All control valve or use the Lift-All as a pump to feed add-on valve(s)?
Thanks for the reply Jim. Great questions. The Saginaw 3 point is equipped with 2 lift cylinders that I believe are 2 way styles. Right now, I'm not too familiar with the lift-all or how its configured. Iam awaiting delivery. I'll update the forum as soon as I recieve it.
The Lift-All has three ports and is designed to work with one way cylinders. It can be made to work with two ways. The three ports are common pipe thread (1/2" I think?). The right side and the forward left side operate together. The rear port on the left is delayed operation so when you lift cultivators as you get to the end of a row, the front section raises immediately and the rear stays in the ground while the tractor moves forward until the rear gets to the end of the row (lowering the rear at the beginning of a row is delayed as well for the opposite reason). For the three point ignore the left rear port after plugging it. When you push the control rod forward the weight of the implement pushes the oil from the one way cylinder backwards through the hose back into the Lift-All. The oil should be oil not hydraulic fluid and 30wt nondetergent. If you do have two way cylinders then it gets a little more complicated. Lets make sure you have two way cylinders before getting into that.
Plus it only works with the clutch up (foot off the pedal) whether in neutral or a gear. For cultivators or a trip bucket manure loader, which was about the extent of hydraulic implements in the time frame when the tractor was new, the Lift-All is a simple but effective system compared to manually lifting the implement or a pitchfork. Compared to modern hydraulic systems though it is woefully lacking but can be modified to be improved somewhat.
The simplest and most inexpensive way to hook it up is to run a hose from the front port on each side, to the bottom port on each cylinder.
Install a vented plug in the top port on each cylinder. These can be purchased from hydraulic supply shops, or you can make your own by drilling a few small holes in a common iron pipe plug of the correct size, found at your local hardware or big box store. Black or galvanized doesn't matter. It is probably 3/4" pipe.
That gives you power up, gravity down, which is the same as all the larger tractors.
All three ports on the H's liftall (belly pump) are pressure at the same time. You really can't go wrong if you are setting it up one-way.
To set it up with pressure-down, you will need to add a two-way valve and some additional plumbing.
7 posts • Page 1 of 1
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