Re: Hydraulics on old Farmall A: common?

Posted by LenRahilly on November 06, 2006 at 12:58:27 from (24.50.99.60):

In Reply to: Hydraulics on old Farmall A: common? posted by DennisT on November 06, 2006 at 11:44:15:

The Farmall A came out with a PNEUMATIC lift. The EXHAUST was diverted into a huge cylinder that lifted the implement. I have heard that eventually the exhaust corroded this mechanism. The one advantage of this system over the conventional lifts of that time (some mechanical, as on F-20 and Oliver, some hydraulic, as on F-12)is that the lift could be worked even with the clutch disengaged. Most of the other power lifts from the 30s and early 40s operated off the transmission or PTO drive, and so, if the clutch was disengaged (at the end of a row of corn, for example), your lift went dead. If you wanted to come up very close to a fence, you had to shift to neutral, engage the clutch, lift the implement, shift back into gear before moving on. You COULD lift the implement on the go if you had room before turning. One of the problems with this plan is that you needed the engine running pretty fast to get some pump pressure for a quick lift; this meant you could run into the fence if you weren't quick about your turn. Independent hydraulics, driven off the engine, are wonderful by comparison. I believe that independent hydraulics were availble on the Super A.

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