ford 801 hydraulics

WI Rick · Apr 5, 2013

I"ve had a 1959 841 ford for about 6 months. The rear hydraulics were good enough to lift a light back blade, but not enough to lift a plow or disc. I took off the pump to rebuild it and found out that somebody else had done that not to long ago. When they had done that, they did not install any seats on the balls to the spring to the cover. So I put those in, but the cover does not fit tight against the body now, installed it anyhow, and have no lift whatsoever. I primed the pump, but still wont lift at all. Any ideas? Thanks

jeff pk · Apr 5, 2013

Hi Rick, you might have more luck posting this in the Ford Tractor section... Lots of experts over there.

chuck41 · Apr 5, 2013

Hi Rick, Remembering yrs ago, sometimes they had
to be primed over again. One method was taking
the top plug off and filling with oil. Over the
yrs we had better luck with forcing compressed
air in the dipstick hole. That would force oil
upward and would prime the pump (had to hold the
compressed air for a bit)Chuck

JMOR · Apr 6, 2013

" When they had done that, they did not install any seats on the balls to the spring to the cover." What does that mean? Guide pins, maybe?

WI Rick · Apr 6, 2013

In the body of the cylinder are 6 cylinders where the seats belong. I went ahead and rebuilt the cylinder again with the seats removed and it worked temporarily. No guide pins, just balls in a cylinder about twice their diameter.
The three point hitch lifted a 5' wide disk harrow with about 200# of block on top (400 to 500# total.) Tilled one area and it went great. Went to the next spot to til, turned the engine off for 5 minutes, started it up and there was hydraulic fluid spurting out between the cover and the body of the pump.
Just pulled up to garage and am draining the fluid right now to pull the pump off again and take another look.
I have the original manual and that's pretty good, but I've heard of a video on old Ford hydraulics, or the I&T manual. Are either of those more helpful than the original manual?
Thanks for the advice.

JMOR · Apr 6, 2013

(quoted from post at 14:27:26 04/06/13) In the body of the cylinder are 6 cylinders where the seats belong. I went ahead and rebuilt the cylinder again with the seats removed and it worked temporarily. No guide pins, just balls in a cylinder about twice their diameter.
The three point hitch lifted a 5' wide disk harrow with about 200# of block on top (400 to 500# total.) Tilled one area and it went great. Went to the next spot to til, turned the engine off for 5 minutes, started it up and there was hydraulic fluid spurting out between the cover and the body of the pump.
Just pulled up to garage and am draining the fluid right now to pull the pump off again and take another look.
I have the original manual and that's pretty good, but I've heard of a video on old Ford hydraulics, or the I&T manual. Are either of those more helpful than the original manual?
Thanks for the advice.

here should only be separate 'seats' on the inlet valves (6). The seats for outlet valves are integral part of valve plate.

ford 801 hydraulics

WI Rick

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JMOR

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WI Rick

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JMOR

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