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Paulson loader on M ,lowering control

A

Anonymous-0

Well-known Member
The Paulson loader on my M lifts and holds fine, but you can t lower it in a controlled manner. It is super touchy and will just drop instead of a gradual easy lowering. Impossible to contrl it for delicate type jobs,and its sorta dangerous and hard on stuff this way. The cylinders are one-ways and it runs off the belly pump. I remember having the belly pumps off on H s, and I seem to remember there was an adjustment for that somewhere on the pump? Been a few years and I don t recall now...ideas?
 
i dont remember seeing an adjustment on the pump, there was however a delay cylinder for the rear mount cultivators on the mounted units. surplus center has the delay valve, you put it in the hydraulic line, its directional, so you can mount it so it restricts the fluid flow back to the belly pump.
 
I don't know of any sort of adjustments with the pump. Do you have one line from each cylinder going to each side of the tractor, or do you have the lines from each cylinder T'd and going into one port on the pump?
 
(quoted from post at 13:36:49 12/06/10) The Paulson loader on my M lifts and holds fine, but you can t lower it in a controlled manner. It is super touchy and will just drop instead of a gradual easy lowering. Impossible to contrl it for delicate type jobs,and its sorta dangerous and hard on stuff this way. The cylinders are one-ways and it runs off the belly pump. I remember having the belly pumps off on H s, and I seem to remember there was an adjustment for that somewhere on the pump? Been a few years and I don t recall now...ideas?
Click to expand...

My 1950 H has the same problem, and yes, I know the problem lies within the pump itself, but I don't know what the cure is. My dad had an H with the same kind of McCormick #31 loader that I am using, connected the same exact way, and it did not have that problem.
 
Yes it is run from the front ports and it is Tee-d in to both cylinders. The loader has been on the tractor for something like 40 years, and has never been changed as far as plumbing or any of the parts. It has only been acting this way for the last few years and has gotten steadily worse to where it is now almost unusable. I was pretty sure I saw or did an adjustment for this same thing once before, it may have been on an H cultivator? There was some kind of delay on those so that the rear mounted piece came down last....
 
You may be able to use an in-line hydraulic flow control valve.

It would have to be one of the more expensive units that would permit full flow in one direction (up) and limit flow in the other direction (down).

I'll do some searching and see what information I can find for you.
 
Ok. Here's what you need:

http://www.northerntool.com/shop/tools/product_200336354_200336354

Not sure what size fitting you would need but they have others on the site.

This would go in right before the "T" in your line.

This is the product description:

"Precision flow control and full shutoff in one flow direction, [b:c18cd1c84f]unrestricted flow in opposite direction[/b:c18cd1c84f]. Ideal for control of flow to hydraulic motors as a means of controlling motor speed. 3000 PSI, steel construction."
 
(quoted from post at 13:36:49 12/06/10) The Paulson loader on my M lifts and holds fine, but you can t lower it in a controlled manner. It is super touchy and will just drop instead of a gradual easy lowering. Impossible to contrl it for delicate type jobs,and its sorta dangerous and hard on stuff this way. The cylinders are one-ways and it runs off the belly pump. I remember having the belly pumps off on H s, and I seem to remember there was an adjustment for that somewhere on the pump? Been a few years and I don t recall now...ideas?
Click to expand...

I am bumping this back to the top. Maybe someone who knows the answer will eventually read this thread. An in-line flow restrictor will help, but that is a band-aid fix.
 
Yeah, kind of funny it has changed over time, but the "band aid" fix may be the easiest and simplest way to go. I would get an adjustable flow/check so you could control how fast it drops. Once set it should work great.
http://www.northerntool.com/shop/tools/product_200336354_200336354
 
(quoted from post at 06:42:37 12/08/10) http://ytforums.ytmag.com/viewtopic.php?t=198887&highlight=liftall
Click to expand...

That is an interesting thread, but we didn't have any of that stuff on dads' old H, and we could pick up a large round bale of hay and set it back down gently. No, you didn't want to just shove the control lever forward, because then it WOULD drop like a rock, but it was not at all difficult to "feather" the control and get the loader to lower gently.
 
Thanks for all the info and ideas. My other H s don t do this with loaders on or anything else, and this very M never did this before, so something is wrong- I don t believe it is "the nature of the beast" lol . I think adding a restirctor would work, however I want to figure out why it has come to be this way at all. I will repost when the solution is found !
 
Near as I can tell from looking at the one on the Super M, there's no way to get at anything external to the pump without dropping it out of the tractor.

Since it's been on that tractor for 40 years, I'd imagine the problem is simple long-term wear and tear.
 
I would tend to agree. Something has happened that led to the change in the lowering speed of the loader. The "correct" solution would probably be to drop the pump and go through it to find what it is.

I know on my H it lowers painfully slow! I've always figured it was because of the low weight of the snow blade I use - hence, not enough weight to push the cylinder back down fast. Now I'm wondering if I have a blockage or something. Either way I'm going to live with it for now and just try to be more patient in waiting for the blade to come down.

Hope you can find what's wrong with yours and share the information with us.
 
Thats the way a lot are. To lower the loader a check ball that holds the hydraulic oil from going back has to be pushed off its seat. When a heavy load is on the loader or a heavy loader the oil pressure trying to run back to the reservoir holds the ball harder. Lots of times it takes so much push pressure on the lever to release that it goes all at once. If just using one line from the pump with a tee to cylinders. Try hose on the rear port left side and see if its better. You will be using a different check circut that may be in better condition.
 
(quoted from post at 21:04:49 12/08/10) Thats the way a lot are. To lower the loader a check ball that holds the hydraulic oil from going back has to be pushed off its seat. When a heavy load is on the loader or a heavy loader the oil pressure trying to run back to the reservoir holds the ball harder. Lots of times it takes so much push pressure on the lever to release that it goes all at once. If just using one line from the pump with a tee to cylinders. Try hose on the rear port left side and see if its better. You will be using a different check circut that may be in better condition.
Click to expand...

The rear port on the left side is no different from either of the other two ports. I've had those pumps apart. There is nothing inside to make it any different. The so-called "delay action" had to be from some sort of external attachment.
 
(quoted from post at 07:54:54 12/09/10)
(quoted from post at 21:04:49 12/08/10) Thats the way a lot are. To lower the loader a check ball that holds the hydraulic oil from going back has to be pushed off its seat. When a heavy load is on the loader or a heavy loader the oil pressure trying to run back to the reservoir holds the ball harder. Lots of times it takes so much push pressure on the lever to release that it goes all at once. If just using one line from the pump with a tee to cylinders. Try hose on the rear port left side and see if its better. You will be using a different check circut that may be in better condition.
Click to expand...

The rear port on the left side is no different from either of the other two ports. I've had those pumps apart. There is nothing inside to make it any different. The so-called "delay action" had to be from some sort of external attachment.
Click to expand...

Is there not 2 ball checks with pasages from rear left to one ball check, and another ball check with passages leading to the other ports. I never made any reference about delay action.
 
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