Re: Help me identify this tractor

Posted by chadd on March 30, 2007 at 08:00:44 from (155.92.32.35):

In Reply to: Help me identify this tractor posted by Derek Staha on March 30, 2007 at 07:12:22:

I think that you are missing a part of the serial number. If it is a McCormick Deering W6, it should look like this:
WBK xxxxx ____
WBK stands for a W6
the xxxxx is the serial number, and can range from 501 to the last number tractor produced.
The ____ is the suffix code. This code informs you "what came on it from the factory." The reason I put this in quotes is because it really doesn't tell you much. Early tractors will not have a suffix. The suffix represented an option package that could be checked by the purchaser that gave them the features that they wanted. However, most people mixed and matched, and so they got the same features, but do not show this on the serial number plate. Our W6 has only a W1 (which is what I think you probably have) suffix, which indicates high-compression gasoline engine. However, it was equipped with electric starting, lighting, and swinging drawbar as well.

The W6 is the standard tread version of the Farmall M tractor, and was generally sold for use on middle sized farms that did not raise cultivating crops, but still required a large tractor. The WD-6 is a W-6 with the start on gas/ switch over to diesel fuel engine. It is a fully functional diesel engined tractor, and weighs about 500 pounds more than the W-6. The O-6 is the orchard version of the W-6, that includes sheetmetal fairings over the rear wheels, a louvered hood with side panels, sheetmetal to protect the operator from tree branches, a lower seating postion with revised brake pedals (note that they were also the one of the first IH tractors to get disc brakes standard), and under-hood air intake, and an exhaust system that resides under the hood. The OS-6 was a special version of the O-6 that had the fairings over the rear wheels removed and replaced with fenders similar, but not identical to the W-6, but still retained most of the other changes. The engine side panels disappeared as well, I believe. The I-6 was the industrial form of the W-6. It could be optioned radically different than the other models, however, so they have their own parts manual. They could be equipped from the beginning with hydraulic disc brakes, pintle hitches, solid rubber tires, and a lot more features, as well. The Super W-6 was a W-6 with larger front wheels, slightly faster gearing, bored out cylinder liners for increased horsepower, and standard disc brakes. During this period, the cast iron tub frame was replaced with a channel frame, similar to that of the Farmall M, as well. The Super existed for all of the other models as well (Super WD-6, Super O-6). The Super W6-TA was a radically different tractor than the previous supers. It was fitted with a Torque-Amplifier which provided a planetary gear reduction that could be operated with the tractor under a full drawbar load. With the T/A forward, the tractor was in direct transmission drive, and it worked just like the previous tractors. With the T/A pulled back, the gearing would drop by 12% or something, increasing pulling power. This increased the number of gears from 5 forward, 1 reverse to 10 forward and 2 reverse. NOTE that the speeds created from having the T/A back could not be used on hills!! The T/A will free-wheel on hills, causing the tractor to speed up with no engine braking. The W6-TA was also nearly a foot or so longer than previous tractors.

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