super c pressure relief

beer · Jun 5, 2009

where is the pressure relief valve on a super c witha fast hitch. Ihave been through books they don't identify it. Even archives here I can't find it.Is it on the pump itself where the screw and spring and ball are. Or is it in the touch control

Bob M · Jun 5, 2009

Per the exploded view in the I&T manual the pump has no integral relief valve. The touch control diagram however shows both a "safety valve" and a "pressure regulator valve". They are located together behind the cylinder head plate on the touch control housing.

Not sure the difference between the two valves - the text in the manual is pretty sparse. However I'd guess from the diagram the "safety valve" is the system pressure relief.

Unfortunately neither valve appears to be adjustable.

ScottyHOMeY · Jun 5, 2009

You do need to get a manual if you're going to get into this, but what I can say to get you started is what they call the pressure regulator valve and the safety valve are under the head at the rear of the T/C block. Investigating and curing that will mean removal of the T/C unit. If pressure turns out to be the problem and you need to go in that far, get the book and get the kit (consisting of 14,322 individual o-rings -- when you're all done you should have 8 left over if you did it right) and overhaul the whole riggin' while you're in there.

As far as testing the pressure, no-load low pressure will be too low to trigger a gauge, 40# or less. Pressure under a load (operating arms rigged with something substantial to lift -- the manual suggests a couple of wheel weights) should fall into the 1100-1500 psi range. If you've got something heavy on you FastHitch, that will suffice.

The gauge does hook up in the area you mentioned. It goes into the rear pipe plug of the manifold that joins up to the T/C block.

HTH

beer · Jun 5, 2009

I have all the books and the touch control is rebuilt. The problem I have is the pump stripped the teeth off my cam gear.When I was using the loader. this tractor also has a fasthitch.The way I plumbed the loader is the valve for the fast hitch I took the hoses off and Installed T's then 2 ball valves on each T. So if 2 valves are open the fasthitch works, Then close those open the other 2 and the loader works.I thought I was pressure protected because ther is no pressure relief on fasthitch

ScottyHOMeY · Jun 5, 2009

Not sure from your description of those ball valves, but is it possible that you're drawing directly off the pump and completely bypassing the safety/relief valves?

I'd say next steps then are to look your plumbing over and, if you can get hold of a gauge, check out the pressure in the T/C.

Janicholson · Jun 5, 2009

I think (but do not know) that you have tapped into the system between the pump and the pressure relief.
I see 2 issues with your valving setup, it needs a reservoir to allow at least 2 gallons of oil to be in reserve (supply to pump), and not just what is in the cylinders. This will allow substantial cooling of the fluid. On the the relief issue I would buy a pressure regulator adjustable between 0 and 1500 psi with a flow rating of 6 gpm or more. It should be plumbed in the lines after the valves that go to the loader. It is piped with A "T" in each line (pressure and return) with the valve in between. JimN

beer · Jun 5, 2009

There is a tank on the loader frame it is a loader for a c made by international so I have plenty of fluid It is piped into the fill on the touch control. The T's I put in are on outlet of fasthitch valve.so fast hith lever operates the loader or the fast hitch.Basically I have a diverter valve so it either runs fast hitch or loader but I did it with T's ball valves

Janicholson · Jun 5, 2009

Then the pressure regulator is in the circuit. It needs to be checked for operation when a new gear is installed. Check all three gears in that system for chipped or damaged teeth. replace any suspect gears (maybe all of them) Sometimes gears go bad, or have some other object get between them and wedge them into bits. I would check the pressure regulator, then put it back together. JimN

Anonymous-0 · Jun 5, 2009

The valve listed as safety valve is the relief valve, regulator valve is the unloading circuit which operates in conjunction with the screen orfice and the regulator land on control spools to return system to low neutral pressure . Same basic idea as 300, 400 560 etc. The extra valve to operate hitch is a flow through type ported through the base to utilize same relief valve as rest of system. You can hook a gauge into the line going to hitch to check relief valve. I would advise using a flow rater or a valve in line with the gauge so you could very gradually restrict flow just in case some one installed something wrong in relief (safety) valve giving you too much pressure. I don't know pressure off the top of my head but I am thinking 1200 psi.

Janicholson · Jun 6, 2009

Good suggestion. JimN

504-2 · Jun 6, 2009

I have the same loader but with a diverting valve,I would guess that you might have had a valve move, so you went to a dead short for lack of a better word,causing a back up to the pump at full PSI. Just a thought and not trying to be a b#t. Also mine has shut off valves on both loader cyl to keep the PSI off of the lines when the loader gets bouncing around.

super c pressure relief

beer

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Bob M

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ScottyHOMeY

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beer

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ScottyHOMeY

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Janicholson

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beer

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Janicholson

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504-2

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