H w/ saginaw three point question

sgtbull

Member
Actually, a couple of questions.
First, if you do NOT have the tree to have down pressure on your cylinders, will just the weight of the three point arms be adequate to return the fluid and let the arms go down?

Second, it seems that I can't get my hydraulics to "lock"... that is, raise something, for instance a dump wagon, only part way and stop it. It wants to go back down if its not ALL the way up with the handle "pin" pulled all the way back and hooked in the bracket. Am I doing something wrong or is there a problem with my system or is that "just the nature of it?"
 
I just bought a new saginaw last week for H, works good. On mine the weight of just the 3 point will not let the arms go down.
When I pull the rod all the way back it locks in that position until 3 point is all the way up,and then goes back to the neutral position.Automatically.
 
I'm not sure with the Saginaw if there is something different going on, but a working liftall system should be able to hold a cylinder at any level. I would try gently moving the rod back toward the hold position and see if maybe you are accidentally overshooting it and getting into the down position.
Zach
 
I never have had any problem with having downpressure, I put a valve in there, not a tree valve? It's plumbed up as a double acting cylinder.
 
Liftall lever should have three distinct positions.

back = lift
middle = hold
forward = down

If you are having problems finding the middle position, then the detent mechanism is badly worn in your liftall. To get it working again means take it apart, figure out what's wrong, and fix it.
 
The arms will creep down with no load on it. If you cannot get it to hold at a certain height there is something wrong with the system, what I don't know. It is not the "nature of it".
 
If the detent is supposed to hold it, what is the actual purpose of the "nib" that sticks down on the control rod? Is it to keep you from "overshooting" one of the positions? I have an original manual, and for whatever reason, it doesn't address it... (but it is a 1940 manual, and I believe the lfit was an option, so perhaps that's why it isn't discussed.)
 
The "nib" and the detent are supposed to be coordinated--keeps you from overshooting the detent.
 
The 3 point arms can be pushed down easily on my '40 H. Anything worth picking up with the tractor is heavy enough to pull the arms down.

I'm guessing that you have a weak spring in your Lift All. When you take it apart you will find that all of the springs are weak. It is possible that some of the check balls are dented or worn.

Greg
 
Two things I have seen will take the detent and nib out of sync. One is if the bolt is loose that holds the short arm onto the side of the belly pump. The other is if the arm that the control rod is held up by is bent or loose.
Zach
 
You may have to add weight to it, sometimes they will bind up a little. By weight I mean stand on the arms, once it gets over half way down they usually go down on their own.

Nate
 
I agree, the nib is the middle position and is the hold location. Lift is pull out all the way (internal detent and it self releases if the system goes to bypass from full extension of cylinder.)
To lower it must be lifted above the nib and pushed in. If it is not holding in the mid position, and lowers even faster if pushed in just a little from Nib position, the linkage is not correct, or the rod is the wrong length.
On ours the rod must be pushed in at least 2 inches before it lowers at all. Jim
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top