SA hydraulic pump

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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Gerry Powell
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SA hydraulic pump

Postby Gerry Powell » Tue Aug 30, 2016 3:14 pm

SA pump.pdf
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I have a hydraulic pump that I'm trying to rebuild and it's missing a few parts. What is missing is the check ball and the check ball spring and was wondering if anyone could give me some dimensions on these two parts. Since they're not available any longer, I hope I can match something.
The pump is I think a Pesco, which has ALCOA cast into the body. The numbers stamped on the pump are 360687R92 and 05101208301.

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AL Farmall Boy
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Re: SA hydraulic pump

Postby AL Farmall Boy » Wed Aug 31, 2016 1:26 pm


I see what you're talking about but I haven't ever ran into one with these parts. I wonder (like in the TC auxillary remote valve) if it would still function properly without these 2 parts ?

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Re: SA hydraulic pump

Postby lwhiway » Thu Sep 22, 2016 4:40 pm

What is missing is the check ball and the check ball spring and was wondering
Sometimes I hesitate to say things like this, but.....................

As I've worked with hydraulics, transmissions as an amateur with the help of others of knowledge, it's been my opinion from experience that using a suitable sized spring that will allow the ball to move off it's seat with positive flow, but stiff enough to force the ball back on that seat once flow in that direction has ceased, will work.

Same as the size of the ball that will cover the seat adequately. The right sized ball bearing etc and sized spring will work.

Of course having another pump or similar pump to get the specifics off of goes a long way quicker.


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