Jim, Good choice in my book! I have an HD3 highlift - good machine. Typical Allis Chalmers product - nice comfortable machine, easy to operate, lots of power. The diesel engine is not always the easiest to start, need a good hot battery and a good starter. A lot of parts are available for the tractor. I had a lot of trouble finding bottom roller seals for it, but I understand the AGCO is making them again. The engine parts are readily available from most any place that sells rebuild kits for industrial equipment. I can say that they are NOT CHEAP. I recently rebuilt the engine in mine, and have about $2000.00 in it (complete out-of-frame major - sleeves, pistons, rings, ground the crank, new valve train, water pump, starter, radiator recored, etc.). But it runs like a new one, and hopefully will for a long time. The tranny was a different story. The HD3 was the ONLY tranny that used the gears it uses. They're a constant-mesh, so most of the wear is on the "dogs" the shift collars mesh with. This will cause it to jump out of gear. The only way I've found to rebuild is used. But if the machine has had any care at all, it should be okay. Final drive parts (bull gears, pinions, drive axles, etc.) I have been able to find new aftermarket, and they have been excellent quality. A good tractor, if you have time to work with it. As I always tell people about these tractors: As long as you keep in mind 3 things - it's old, it's slow, and it's small - it will last you a long time. Let us know if you get it and how it turns out.
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