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 - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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