Farmall H belly pump questions

I traded for an H in December and the guy sold me a belly pump for a little extra. The trouble is it came off one of his parts tractors and he didn't know if it was any good. I would like to use it to run the NH 461 head lift cylinder in the photo, so I have plenty of time to figure this out. The pump has not yet gone on the tractor and I am wondering if there is any way I should check the pump before I go to the trouble of installing it. I'm new to Farmall, and I appreciate the friendly nature of this board and the people on it. I looked in the archive for a while but didn't find anything about checking the pump.
Zach

I don't know of any easy way to test it out of the tractor. I installed mine by myself in about 30 minutes. I set it on a floor jack and lifted it into place. It is heavy and you may want someone to help. Install the 4 bolts,plumbing, and drive coupler. Fire it up and try it out.
I think you'll find it easier to just install it rather than try to fab up a test rig.

Thanks, I'll do that.
Zach

Thanks, I'll do that.
Zach

This should help. Jim

Thank you Jim. I am hoping to be able to put a breather on the top port of the cylinder and use it as a one way. It extends to lift the head, so I'm thinking that it should have enough weight to go back down again. Should that be possible with that cylinder? Thanks very much.
Zach

Yes, no problem. If you use it one way, there is no need for the diagram, just hook up the cylinder push hose to the right side pressure elbow as in the illustration, and the upper retract hose to the bottom of the reservoir. The regular control rod will then work as designed. There will be no need for a second valve as in the illustration, and the upper part of the cylinder acts as additional reservoir space, and the hose prevents the need for a vent. Jim

(quoted from post at 14:52:27 02/03/10) Yes, no problem. If you use it one way, there is no need for the diagram, just hook up the cylinder push hose to the right side pressure elbow as in the illustration, and the upper retract hose to the bottom of the reservoir. The regular control rod will then work as designed. There will be no need for a second valve as in the illustration, and the upper part of the cylinder acts as additional reservoir space, and the hose prevents the need for a vent. Jim

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So there is no need for a vent? I know my one ways just have a pipe plug in them.

Thanks again for the great help. I think I understand what you said, but there are a couple of things I'm not sure about. Should I hook the return to the drain plug hole, or is there another place? Does the regular control rod work that when you pull it the cylinder goes up and when you push it all the way forward it goes down? I've seen SAE 30 non detergent oil recommended for the pump, is that what you'd recommend too? Thank you very much for the help you've given me.
Zach

Answers:
The hose from the non pressurized end of the cylinder acts as an extended reservoir. To do this it needs to be connected to the reservoir. there is no provision for this use, so a 1/2" npt "T" and a close nipple, are used in the bottom of the pump housing this allows draining and access to the reservoir for the hose from the non pressure end. Putting the hose in the filler pipe will not allow it to suck and push the extra fluid.
Doing this keeps the cylinder lubricated at the packing, keeps water and dirt out, and allows a larger res capacity.
The control rod with a loop on the end has 4 positions (three being used) hold is a mid travel position with the little welded on tab hooked on the support casting. This is basically neutral, and holds the cylinder/s at their current position. Pulled out all the way, it lifts.
Pushed in all the way it lowers.
Pushed in 1/2 way from hold is delay lower. (operates on the left rear outlet only) You can ignore this aspect unless fitted with a old IH cultivator, or other sequential lift implement.
Both left and right regular outlets are "T"ed together inside, not separate.
IH Hytran or JD hydraulic Transmission fluid are great. I would not use the ND oil as it may have been as good as was available then but Hytran has much better properties. (it will mix with residual oil in the unit, no flush needed after draining. JimN

If it is plugged at the non pressure end, it will work, but the packing may be operating dry. I would either use a vent with filter, and every year put a little oil in the port to lube the seal, or run as I described with a return hose that lets the cylinder hold fluid on the non pressure side. Jim

Now see you already have problems. Your using a JD cylinder on a NH machine and plan to pull it with a Farmall so the fight will begin form the get go. LOL Keep a close eye on the small chain on the machine. I had to replace chain and sprocket on my 460 because of a bad chain and funny how they do not work well with the chain broken

Thank you very much. That explains everything I need to know. I appreciate your taking time to explain how it all works.
Zach

You are welcome. Jim

(quoted from post at 22:31:52 02/03/10) If it is plugged at the non pressure end, it will work, but the packing may be operating dry. I would either use a vent with filter, and every year put a little oil in the port to lube the seal, or run as I described with a return hose that lets the cylinder hold fluid on the non pressure side. Jim

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I appreciate it, too! If you have one outlet and dual hoses can you just hook one up and have it work? Where does this fit into the scenario?

Sflem,
I am not sure what you mean by one outlet.
If on the tractor, supplying pressure to something, it usually means that it is single acting setup. If hooked to the business end of a double acting cylinder, the far end port (which may be located at the same end) will push out and suck in air as the cylinder moves. If the port is plugged, air pressure builds up and declines in that part of the cylinder. If it is free from oil, it can wear the bushing and packing gland on the ram. If it is vented with a paper breather, it can bring in moisture laden air. If it is used as an extended reservoir bu being connected to the reservoir (but at the drain port) it will just act like a larger reservoir, and lube the cylinder ram end. Jim