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gordon: There are rumours that a few A in late 47 did have hydraulics. I have never seen any proof of this, other than my uncle did have a tractor with A decals and hydraulics. This however is not proof as I don't know the serial number. In the case of your tractor it is now 50+ years old and a lot of water has gone under the bridge. You could have a tractor built from two or more tractors. It could be as simple as someone has replaced seat mounts. If you look on engine block, just under No. 1 plug there is a flat machined surface with letters and serial number stamped on, not cast in. That number should be close to tractor serial number. If far appart you may have a tractor built from parts. The next item is to check casting codes. Each major casting has one. Casting codes are those numbers and letters having what appears to be a round head, blade type screw between digits. These are all cast into casting. Month and day are by number, year is done by letter. X is 1952, Y is 1953, Z is 1954 and A is 1955. V was not used thus you can go foreward or backward from there. If you find you have castings more than one year appart, you definately have a tractor built from one or more tractors. A and Super A parts wiil almost all interchange except two major hurdles; the A engine block is not drilled for hydraulic pump. The A torque tube is round on top, whereas the SA torque tube is flat on top to facilitate mounting of touch control unit. This does not mean your tractor is junk or anything of the kind. Some very nice tractors have been built in home shops from parts. Just look at the hoopla over those HTA.
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