Chief 4 position valve

dusty082000 · Apr 25, 2023

Hi everyone. I installed a tractor supply
Chief four position valve on my Superior
Loader. The Gresen valve I had was 3
position so I didn't have power down on my
lift cylinders. The pump is crank mounted
and the oil reservoir is in the loader
frame. My question that I have is there
any adjustments I need to make to this
valve setup? I have to fully pull the
levers all the way forward or back. If I
don't the tractor bogs down or stalls. My
other valves I could feather so I could go
slower if needed. Any information is
appreciated. Thanks (1957 Ford 860
tractor)

Jim.ME · Apr 25, 2023

My first thought is the new valve's main relief pressure may be set higher than the old one, which would cause more engine loading when feathering and deadheading during lifting and rolling the bucket. You should check what it is set at now and adjust it if needed. I think I said before I expected your pump was 10gpm, or more. If the pump flow is higher than the valve 10gpm rating, you will see some loading when feathering through a partially open spool as the relief has to open to pass the excess flow. And if the new relief is set too high it will load the engine as the excess is pushed through the relief, even more so if the relief valve is a bit small for the pump flow.

Muir hill 101 · Apr 26, 2023

Ford 860 pump is 4.8 gpm from what I come up with

dusty082000 · Apr 26, 2023

That is the internal pump at 4.8 gpm correct? The loader has a crank driven pump on the front of the tractor

Jim.ME · Apr 26, 2023

4.8 gpm is the Ford's internal hydraulic system pump. When he was looking at this valve he posted that he has a crank driven pump for this loader, and then again here. Those front mounted pumps were in the 10 plus gpm range. I saw an advertising brochure for Superior loaders that mentioned a 14gpm pump and the generic loader pump this site sells is 14 gpm. I believe his pump has 10 gpm or more flow, likely nearer the 14 gpm.

wp6529 · Apr 26, 2023

You'll only get 14GPM flow if the engine is running at the pumps full rated RPM. If you're running at a more normal medium RPM you'll have less flow. Either way, a pressure gauge needs to be installed and the relief valve operating pressure set appropriately for the loader.

dusty082000 · Apr 26, 2023

This valve has a 10gpm flow. Does this
mean I may not be able to adjust it or if
possible a different pressure relief?

wp6529 · Apr 26, 2023

(quoted from post at 10:48:52 04/26/23) This valve has a 10gpm flow. Does this
mean I may not be able to adjust it or if
possible a different pressure relief?

You will be able to set the pressure relief properly if the pump is running at 10GPM or less flow. If you are not running the tractor at full RPM you will not be getting 14GPM flow. You should be able to set the pressure relief just fine at idle speed.

If you are running full RPM you will be exceeding the relief valve's capacity so the pressure will exceed the set point unless there is another relief valve in the system that is also working which may accomodate the excess flow.

You need to check the pumps rated RPM, which could potentially be 3600RPM. If the pupm is rated 14GPM@3600RPM (like a gas engine application) you would get around 7GPM at 1800RPM which would be about the top for a diesel tractor and direct drive to the pump. I don't know about you, but I don't typically run my diesel tractor above 1500 RPM.

used red MN · Apr 26, 2023

I see the description says it has anti-drop check valves. Do those have to be overridden or disabled to move the cylinder? Could they be set too tight for his application? Anyone know how they work?

Chief 4 position valve

dusty082000

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Jim.ME

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Muir hill 101

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dusty082000

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Jim.ME

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wp6529

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dusty082000

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wp6529

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used red MN

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