Super A hydraulics

drmiller · Apr 4, 2011

Anyone know if it is possible to make the rear hydraulics on a Super A one way?

I want gravity to take over when lowering instead of shoving things in the dirt.

Thanks in advance.

David

Janicholson · Apr 4, 2011

The easiest way is to use a chain based or telescopic tube lift link. This allows easy change back to down force when needed for things like a rear blade. Jim

NawlensGator · Apr 4, 2011

I thought super a had the same hydraulics as the IH 140. 140's have one way hydraulics. On mine, the connecting arm from the rear 3 pt arm's has a sleeve that slides on the 1" rod from the touch control. The rod is threaded at the rear end and there is a lock nut on the rear end behind the sleeve. The nut provides a stop for the sleeve when the rod is going forward (up) which provides upward force for the 3 pt. When going backward (down) the sleeve can slide forward on the rod except the weight of the implement (gravity) keeps it against the rear nut until the implement hits the ground. When the implement is on the ground, the sleeve will slide forward on the rod if you keep moving the rod rearward.

Jim Becker · Apr 4, 2011

Assuming you are dealing with the regular rear rockshaft and the Touch-Control, you should be able to change it in about 10 seconds with one wrench. The lift rod that runs back from the Touch-Control arm to the rear rockshaft should be similar to what NawlensGator described. Add one more detail, the lift rod should have a set collar at the front end of the sleeve. Loosen the set collar and slide it forward so it doesn't touch the sleeve when the lift is lowered. If NawlensGator slides his collar the other way, he will get down pressure.

If this doesn't apply, you must have something different and will need to post a picture of what you have.

NawlensGator · Apr 4, 2011

You are corect Jim. The set collar stays forward several inches from the sleeve. In its current position you can't engage the collar before the rod travel runs out. I never need down pressure.

mkirsch · Apr 4, 2011

In the literal sense, NO, you cannot have true "one way" hydraulics with the Touch Control lift arms on a Super A. They are always two way; power up & power down.

What Jim and NawlensGator are describing is a way to disengage down pressure. The TC lift can't "force" the implement into the ground.

Unfortunately, the lift rod on a Super A does not have the sliding collar like on a 140. The sliding collar arrangement is part of the Fast Hitch design, which came out after the Super A.

On many Super A implements, you WANT pressure on the down stroke.

For those that don't need the pressure, they either used a chain or a spring-loaded link.

Can you describe better what you are trying to do, and why you only want one-way hydraulics?

Rootsy · Apr 4, 2011

My SA is setup with the adjustable collar. Whether it is original or added by someone afterward I do not know. If I try to use it in a down pressure situation with no play it'll just end up buckling the rod running from the touch control arm to the rock shaft. I got tired of straightening (and weakening it each time) it after a time or two.

Jim Becker · Apr 4, 2011

Fortunately, the Super A did have a sliding collar. Here is an illustration of the '48 version (reference #12).

And here is where it went on the '49 and up version, although the collar isn't illustrated (at reference #5).

drmiller · Apr 8, 2011

Thanks. I'm using a rototiller. I'll have to read the responses about 12 times before I finally get it, but at least its a start.

Super A hydraulics

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Jim Becker

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