Super M Hydraulics

CNKS · Jun 5, 2012

I referred to this earlier, but I am still confused. Someone explain to me how the relief valve in the hydraulic reservoir works. Referring to 42 in the diagram, the seat (16) fits on the gasket (15), the ball (17) fits in the seat, the spring (19) fits inside the sleeve (18), the body (20) fits over the whole thing and the cap (21) fits over the body. However the ball does not fit into the bottom of the spring but is free to move up and down without resistance. Thus the spring does nothing far as I can tell. The previous owner had put in a couple of parts so that the ball seated into the spring. Unfortunately I did not pay attention to the way I disassembled it, so that I don’t know what the sequence is, I was going to rely on my parts manual but those parts are not shown. One of the parts can be put between the ball and the spring, but it is not in the diagram. Assembled according to the diagram I can’t see how the valve does anything.

Janicholson · Jun 5, 2012

Part 18 in the illustration is a spring seat/follower that prevents the spring from swallowing the ball. Jim

CNKS · Jun 5, 2012

18 is a sleeve that the spring fits in, the ball goes right through the spring. In case someone swapped parts the spring is new the ball is 0.375, I did not replace the sleeve, but its the spring that should stop the ball. I have an unlisted fitting that will keep the ball out of the spring, but as stated it is not in the diagram.

D Slater · Jun 5, 2012

Think you have everything. Think I have a relief
valve from one laying around. If I get a chance will look tomorrow and refresh memory. Sure its the correct spring? Late countershaft driven liftalls used the same relief valve.

CNKS · Jun 5, 2012

I picked up a new spring and seat from CaseIH today, and also the gasket that fits under the seat. They are identical to the old ones. The piece I have that is not in the diagram will fit inside the spring and hold the ball. Sure looks like it was made for the purpose. The PO also had a smaller diameter "seat" and a piece that the small seat would fit into. So there are really 3 pieces. I don't think it needs all of them. He had, I think, connections for 3 remotes and apparently had a loader on the tractor. Perhaps he was having problems and was trying to up the pressure so the relief valve would release later to do what he wanted, I don't know. I'm trying to put it back in original condition.

D Slater · Jun 6, 2012

Order is gasket, seat, ball, sleeve, spring, retainer and cover. Spring won't pass through the sleeve and sleeve has a seat for the ball. Guessing your sleeve has the end broke or gone.
Can post picture if needed. Noticed I typed order wrong the first time, so corrected. Dave

addeCNKS · Jun 6, 2012

Thanks, you explained my problem (Jim is correct with the first answer). The sleeve is NLA. Mine has no seat for the ball, if cut it was a good job. My sleeve is 3/4 in long, the piece I use as a seat will add a fraction of an inch. The PO apparently added 2 more parts to get the right length. How long is your sleeve? With no seat the length is 3/4, ID about 19/32, OD 0.675 or 21-22/32, my calipers or my measurement is not precise. Do you want to give up your sleeve, or the whole valve if more convenient? The seat, spring, and gasket are new, I can replace those if any of yours are worn. Or I can modify mine if I can figure how the PO did it. My email is [email protected].

CNKS · Jun 6, 2012

Dave, trying to get the adde removed from my handle plus the happy face above that I did not add. At the moment I have 2 handles.

sflem849 · Jun 6, 2012

The smiley is there because you typed the number 8 and then ) That will make this 8) when you put them together.

To get around it I would type (18 )

Super M Hydraulics

CNKS

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Janicholson

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CNKS

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D Slater

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CNKS

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D Slater

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addeCNKS

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CNKS

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sflem849

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