Famall H Lift all

660 guy · Mar 25, 2011

Hello: The H I have has a modell 31 loader and I thought after I rebuilt the cylinders on it I'd be good, but it'll only pick up @300lbs or so barely. Anyone ever rebiult a pump on a 1941 H before? Any help greatly appreciated. Mark R.

sflem849 · Mar 25, 2011

They were a throw away even way back then. This is all I have ever heard. I thought there had to be a way to shim them and make them put out more pressure or ??? but I never heard a word on anything like that.

pete 23 · Mar 25, 2011

First simple test. With engine shut off does the lever latch in raise position? If it does, start it up, pull to raise and see if lever stays there while lifting or attempting to lift. If it kicks the lever off you know the relief valve is leaking as it is designed with a trip button on relief valve and when fluid flows out relief valve it trips you back to neutral. If lever just stays and won't lift the pump gears them selves are leaking too much. May be worn out body or gears or both. Lots of times springs go through gears and raise heck with them. Now on the other hand, if your lever will not latch and stay, it takes an experienced feel to tell if relief valve is problem or not. You should put a gauge on it while trying to lift to see what it is capable of doing. About 700 psi would be a minimun you want. They need a 30 wt oil to operate unless they are in very good shape. Far as being repairable, have done hundreds but now days I doubt you could find affordable parts except for springs, gaskets, balls , relief valve seat etc.

Joe Dowling · Mar 26, 2011

I've had problems with my '52 H lift all twice. Once the lever return spring broke and jamed the gears, twisted off input shaft. New gears fixed that. Another time I had a needle bearing go bad and chew up the pump housing. I had a machinist friend repair the housing as it is not available. My bet is your pressure relief spring is too weak. I shimmed mine to up the pressure so I could lift a small building with the loader to put it on a trailer. Pressure guage is the way to tell. Good Luck.

DanR · Mar 26, 2011

Yeah I rebuilt one. BIG MISTAKE! When it was all said and done I had way more $$ in it than I could have bought a new live pump for. Live and learn I guess.

riverbend · Mar 26, 2011

I had the pump apart on my '40 H recently. It is easy to work on and when something is wrong, it is pretty obvious. I'm sure it is several pages back, but I had posted the free length of the new springs.

The only trick is to jam the pump gears with a length of strap iron to remove the drive coupler. Clean the outside before you open the reservoir and keep the inside spotlessly clean.

When mine wouldn't lift the cap had come off the pressure relief valve and several of the springs were bad.

Greg

660 guy · Mar 26, 2011

Thanks to all !!!!!!!!!!!!!

660 guy · Mar 26, 2011

Thanks to all !!!!!!!!!!!!!

Famall H Lift all

660 guy

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sflem849

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pete 23

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Joe Dowling

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DanR

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riverbend

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660 guy

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660 guy

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