Harry Posted July 30, 2009 Share Posted July 30, 2009 A client of mine has just imported from the States a 1960 Mack, Model B85.I have been asked to check out the starting fault and found the truck to be a 12v system and positive earth, can someone tell me if this is standard? or have the batteries been fitted incorrectly?The truck is fitted with a petrol / gas motor and set up as a fire engine.any help would be greatly appreciated.Harry Quote Link to comment https://www.bigmacktrucks.com/topic/10188-1960-mack-model-b85/ Share on other sites More sharing options...
Rob Posted July 30, 2009 Share Posted July 30, 2009 A client of mine has just imported from the States a 1960 Mack, Model B85.I have been asked to check out the starting fault and found the truck to be a 12v system and positive earth, can someone tell me if this is standard? or have the batteries been fitted incorrectly?The truck is fitted with a petrol / gas motor and set up as a fire engine.any help would be greatly appreciated.HarryBeing a gasoline, (petrol) powered unit this would be correct. Positive ground, (earth) was very common in the timeframe before alternators became the normal application for battery charging.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/10188-1960-mack-model-b85/#findComment-38598 Share on other sites More sharing options...
3rdWrightBrother Posted July 31, 2009 Share Posted July 31, 2009 Being a gasoline, (petrol) powered unit this would be correct. Positive ground, (earth) was very common in the timeframe before alternators became the normal application for battery charging.RobMy 65 B75 was positive ground also.Russ Quote Link to comment https://www.bigmacktrucks.com/topic/10188-1960-mack-model-b85/#findComment-38622 Share on other sites More sharing options...
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