My first public safety ride. I believe it was a 1953 vintage, ex Mass Electric truck. Real hard to start with a 6 volt system. Any ideas on the model?
Here is a sure fire way to solve the starting problem on any IHC made vehicle:
find the battery cable that goes from the battery to the FRAME, and remove, toss in the wastebasket. Get some 00 or 000 gauge battery cable and run from the battery to the starter mounting bolt. Problem solved!
Since the ground strap is known to be a problem, it would be a good idea to run some 2-4 ga welding cable as a jumper from the block to body and frame.
With the battery hooked directly to the highest amp draw componant on the truck with the fewest possable connection points, it will crank just fine.
It was a problem with IHC in the 30's and continued to be one into the 90's or may still be as far as I know. They saved a few pennys on cable and had problems whenever the vehicle aged.