Update Farmall 450

Mark in Upstate · Mar 7, 2014

All, previous posted about the Hydra -touch hydraulics on my 450 staying at high pressure after cycling, returning to center. I discussed with a dear friend and mechanic. He said I was very thorough. But this had him stumped. I pulled the relief valve apart again, removed the bypass screen that is unscrewed with a driver. I double checked all openings. The orifice on the screen was only .010 and Pete23. had noted that. 040 would work to bypass and relief the 'fulloffice pressure 'manifold issue. I opened it to. 060 because that is all I had. It solved the pressure issue. Thank you Pete23.
.040. will work very well when I replace the screen.

Mark

Janicholson · Mar 7, 2014

The .040 size is likely to be needed in the warmer weather. .060 will work when it is in thicker fluid.
Good fix, and keep an Eye on it. Jim

pete 23 · Mar 7, 2014

I was going to say that also, the .060 will probably allow too much fluid to the unloading piston when fluid gets warm and in that case you would not be able to build any pressure. The right size is where they quit their belching but still go on demand quickly when all warmed up.

Update Farmall 450

Mark in Upstate

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Janicholson

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pete 23

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