Re: Farmall h / m hydraulic specifications?

Posted by Nat on August 26, 2005 at 08:27:31 from (64.80.108.52):

In Reply to: Re: Farmall h / m hydraulic specifications? posted by freeman28139 on August 26, 2005 at 05:44:22:

Original belly pumps were around 500psi. Later on they were upped to 750psi, and you could rebuild an original for the higher pressure. Odds are that the belly pump has been rebuilt at one point in the tractor's lifetime, so it's probably at 750psi if it's any good. Distributor-drive hydraulics, aka live hydraulics, are good for around 1000psi.

Real quick on the "Super" series tractors... The stages refer to the additional features added to the tractors as they gradually transitioned from the original Hs and Ms to the 300s and 400s, not just hydraulics.

Stage 1 was basically the same as the original, except they had higher horsepower engines, faster gears, and disk brakes.

Stage 2 added distributor-drive (live) hydraulics, external hydraulic reservoir, and moves the battery back under the seat.

Stage 3 added live PTO and torque amplifier. The "Stage 3 Super H" was never produced. It became the 300.

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