The M was John Deere"s first model of the Dubuque line and along with the rest of the letter series until late 1951(?) used the thermo-siphon cooling system with out a water pump. the "M" series of tractors always had a tendency to run some what hot. The temp gauge is in the top water pipe where the water is the hottest. A loose fan belt, plugged radiator fins or unmixed coolant will all contribute to this system running hot since it depends on the principle of hot water rising and cooler water sinking to the bottom. This is aided by a copper finned radiator core that transfers heat rapidly and if all is working right these tractors still ran on the upper end of the temp scale just before hot.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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