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rotorwrench · 05-12-2020, 12:34 PM

It's sort of typical on those old Ford transmissions with the oval tag for the part number to be gone. They were painted on so time and the elements have removed the paint.

It's a small case unit and appears to be air cooled so it would be consistent with the 1954 Ford or Mercury cars. It has the selector and throttle valve arms & control rods on it. The throttle control rod should mate with a bellcrank up top on the manifold behind the carburetor. The linkage controled by the engine throttle to adjust the operating pressures for the transmission.

The stamped on numbers indicate the assembly plant and the sequential number of the unit if its the same as the way they marked them in 1953. I don't have a 1954 book for the Merc-O-Matic but it likely is a PAE-7003-A or B. These are very similar to the first units made in 1951 but they have some better upgrades incorporated in them that the first units didn't have. Folks would swap in a Ford unit as long as it fit and the 54 Ford units are pretty much the same as 54 Mercury.

05-12-2020, 12:34 PM	#8
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,425	Re: 54Merc Transmission Mystery It's sort of typical on those old Ford transmissions with the oval tag for the part number to be gone. They were painted on so time and the elements have removed the paint. It's a small case unit and appears to be air cooled so it would be consistent with the 1954 Ford or Mercury cars. It has the selector and throttle valve arms & control rods on it. The throttle control rod should mate with a bellcrank up top on the manifold behind the carburetor. The linkage controled by the engine throttle to adjust the operating pressures for the transmission. The stamped on numbers indicate the assembly plant and the sequential number of the unit if its the same as the way they marked them in 1953. I don't have a 1954 book for the Merc-O-Matic but it likely is a PAE-7003-A or B. These are very similar to the first units made in 1951 but they have some better upgrades incorporated in them that the first units didn't have. Folks would swap in a Ford unit as long as it fit and the 54 Ford units are pretty much the same as 54 Mercury.