MM model designations

agonair · Feb 22, 2015

Curious as to what the designations mean and how MM set their tractor models? You have G series, M, U etc...

mmfan55 · Feb 22, 2015

In the letter series tractors; smallest to largest was R; Z; U; G. The first letter is size; next is series; A; T; and B. then style- U; S; N; E. For instance; a UTU is a u size; T was built from late 30s til '55; U is a tricycle with dual tires. B series was the start of the foot clutch in all but the G size. It remained hand clutch. The last letters denote: S-standard tread wide front; U-traditional narrow front with dual tires; N-narrow front with single tire; E-wide front with adjustable tread width. It does get a bit more complex; but that is "general" information.

MM diesel · Feb 23, 2015

The early tractors R, Z, U, and G all had a "T" as the second letter designation for tractor. On these models, the third letter designated the front end with N for single front end, U for tricycle (dual) front end, E for row crop wide front end, S for wheatland (standard) front, I for Industrial, and C for cane (hi-crop available only on the U). All G's had the wheatland (type S) front to the best of my knowledge. The ZT was replaced by the ZA in 1949, and then the ZB in 1953, and the third letter continued to designate front ends as mentioned above. In 1952, the UB replaced the UT as a row crop tractor. The UTI and UTS continued production until 1956. UB production continued through 1956. The 5 star replaced the UB in 1957.
The 5 star was produced through 1959, and in 1960 the M5 was introduced. The successors to the M5 were the M602 in 1963, then the M670 (1964) and M670 super (1966). Email me if you have any more questions

Michael Moeller
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MM model designations

agonair

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mmfan55

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MM diesel

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