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Ford 1510 voltage regulator putting out 19.5 volts !!!

D

davb38967

New User
Hi folks,
My cousin has a Ford 1510 tractor that had the battery explode a few weeks ago. Come to discover that the charging system has been overcharging the battery & apparently had boiled all the water out & shorted across the plates. He purchased a new battery & checked the voltage that the alternator/voltage regulator was putting out & it is 19.5 volts. He ordered a new voltage regulator from the same aftermarket supplier thinking that the 1st one mite be bad & the 2nd one is also putting out 19.5 volts too. The alternator was replaced several months prior but is working as it should. The voltage regulator is a manual type(not electronic).
Hoping someone can shed some light on this. We've searched for a electrical diagram(schematic) to no avail.
Thanks for any & all help,
David B in Mississippi
 
(quoted from post at 02:11:26 12/15/17) Hi folks,
My cousin has a Ford 1510 tractor that had the battery explode a few weeks ago. Come to discover that the charging system has been overcharging the battery & apparently had boiled all the water out & shorted across the plates. He purchased a new battery & checked the voltage that the alternator/voltage regulator was putting out & it is 19.5 volts. He ordered a new voltage regulator from the same aftermarket supplier thinking that the 1st one mite be bad & the 2nd one is also putting out 19.5 volts too. The alternator was replaced several months prior but is working as it should. The voltage regulator is a manual type(not electronic).
Hoping someone can shed some light on this. We've searched for a electrical diagram(schematic) to no avail.
Thanks for any & all help,
David B in Mississippi
Click to expand...
hat in the world is a "manual" voltage regulator? Do you just keep you hand on it? Next, try a different voltmeter.
 
I had the same problem with one of my tractors, three new
regulators all charging at 19 volts. Bought a better regulator at
NAPA that cost three times than the cheap on line regulator,
fixed the problem. I haven?t bought any cheap electrical
components since, I try to buy the best if I can. Not saying this
is your problem but a possibility.
 
Saw this exact same thing the other day on a similar vintage Kubota. You have an open circuit in the wiring between the regulator and the rest of the electrical system. You most likely have an open circuit in the wire that feeds the "sense voltage" to the regulator. Since the regulator can't "see" anywhere near normal voltage, it full fields the alternator thinking it needs to put out more to get the voltage where it needs to be.

Carefully follow and inspect your harness after it exits the regulator. Look for any broken wires or rub points. Pay particularly close attention to the terminals going into the connector. This is where I found the issue with the Kubota - everything looked OK until I gave the wires a "tug test".
 
By "manual" regulator, he means one that is not electronic, but rather one that has moving parts inside such as contact points. These were common in pre-1970s cars.

As for "trying a different voltmeter", it's pretty safe to say that the voltage is too high after boiling out the water and then exploding the battery.
 
Thanks for the reply Bern !!!
I read it to him & he's gonna check all your suggestions !!!
Thanks again !!!
 
Thanks for the reply Felix !
Buying a more expensive one from the local tractor dealership had crossed his mind but he decided to try a 2nd one from the cheaper site. That could be it yet. I'll try & keep y'all posted on the progress.
Thanks again !!!
 
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