Farmall Super C -Noisy hydraulic system

brumik · Feb 22, 2010

I just replaced worn out Hydraulic Pump with a New one. I had very poor lift on my front loader.
Now My front loader lifts Great and a lot of weight. Though, the touch control for the belly lift seems a little slower than before replacement.
The big problem is -- the system Whines VERY LOUD when i engage either my remote lever for loader or the touch levers for the belly lift. Not sure if it's the pump - or what.
I did use the recommended Case brand HY-Tran fluid.
Any Ideas from any one omn what the noise is?
Thanks, Bruce

Dave_Id · Feb 22, 2010

Did you bleed all the air out of the system according to the directions given in the owners manual?

erik dekeyser · Feb 22, 2010

Also did you clean the filter screen in the hydrolic box. It might be pluged. Take the fill plug out and run the leavers back and forth until there is no more air in the system. If that doesnt work the hydrolics might be staying on high preasure.

brumik · Feb 22, 2010

I actually did put a New Screen in the tank.

what do you mean "staying on high pressure" ?

brumik · Feb 22, 2010

yes, i followed owners manual.

do you think it could be air in system?

Dave_Id · Feb 22, 2010

Yes.... If I remember correctly, the plug needs to be not installed, then move the levers forth and back a dozen times or so, then refill, then fill to correct level, and reinstall the plug.

erik dekeyser · Feb 22, 2010

Well i have heard of the system staying on high preasure. Its suppose to do that under load but then return to normal. If a valve is sticking or out of ajustment it will stay on high. Maybe some one else can explain it better like the tractor vet.

Anonymous-0 · Feb 23, 2010

My "C" had the same thing wrong with it. I tried all the other ideas until a old mechanic told me that the screen would be collapsed on the pressure regulator valve. He was right, that old knowledge is hard to beat. To get at the orifice you will need to remove the cylinder head which is held on with 14 bolts. They will be either 3/8 or 7/16 bolts. Mine had the 7/16 bolts which used a gasket #354354R3 and the orifice-screen #355372R93. This screen-orifice is about 3 inches long and 1/2 in diameter with a vent opening on the threaded end. Gasket was $11.44 and orifice was $77.67. Cured the problems on mine.

mkirsch · Feb 23, 2010

"staying on high pressure" basically means that something is blocking the flow of oil when you're not trying to do anything.

Normally once you let go of the lever, the oil just flows through the center hole of the valves at low pressure. When you pull a valve, it blocks that center hole and redirects the flow into a cylinder. Because the oil is being forced into a confined space, it builds pressure and the cylinder moves.

Farmall Super C -Noisy hydraulic system

brumik

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Dave_Id

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erik dekeyser

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brumik

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brumik

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Dave_Id

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erik dekeyser

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Anonymous-0

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mkirsch

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