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Re: SMTA starting/ignition problems


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Posted by Janicholson on May 18, 2014 at 04:43:12 from (74.60.94.18):

In Reply to: SMTA starting/ignition problems posted by wicksfield on May 18, 2014 at 03:53:40:

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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