The issue is voltage to the ignition system while cranking. SMTA tractors need high CCA batteries 800 will do. They also need heavy battery cables because they are long, and the engine is tough to crank, If it is cold out it can draw 550 amps. The cables need to be 00gauge wire which is about 3/8 of an inch of wire diameter, not including insulation. The connections need to be soldered on and shrink tube sealed to assure tight and high amp conductivity. The ground should connect to the starter motor mounting bolt clean and shiny, then painted if needed. Welding cable, or OTR truck material is best for construction. Jim
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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