Mechanical Voltage Regulator Solid State Version?

[RedDragon]

I have a Economy Tractor that is not charging the battery. It uses a combined Starter, Generator and I need to replace the Mechanical Voltage Regulator but wanted to know if there is a Solid State Version that would work. It uses the same Voltage Regulator that is also used on John Deere. You can look up the Voltage Regulator on the store page. John Deere Voltage Regulator, External, 12 Volt Part Number VR1816.

Thanks,
Casey

 

[wore out]

I don't know of a solid-state replacement regulator for the starter-generator VR's.

That being said, how do you know yours has failed?

If you don't have detailed troubleshooting/repair info check out the link below.
Delco starter generators

 

[John T]

While I have seen plenty of solid state voltage regulators to replace standard mechanical units, I'm not aware (still could be some, Im
ONLY saying Im unaware) of replacements used for those combination starter/generators. The field windings and current they carry is higher
on those units then on standard gennys.

To see if its charging or not put a volt meter on the battery and see what it is tractor not running. A full charged lead acid at rest and
stabilized would be around 12.6 volts. Then measure the voltage when running at fast RPM, if it rises to at least 13 and up its charging
but if it never rises its not. Some of those combination units made for smaller engine or lawn tractors don't charge at a high rate like a
standard unit.

Dont forget BOTH the genny as well as the VR need good grounds to work, insure that on your tractor.

If you can find a solid state unit exactly suitable for your combination starter/generator I wouldn't hesitate to use it

John T

 

[electro]

The shunt field current, the part regulated by the regulator, for the common Delco starter generators is basically the same as for a common 12 volt tractor generator, around 2 amps or so. It is not higher.

A S-G is somewhat self regulating through the series cranking field and need little special in terms of current limiting from the regulator.

Any 12 volt "A" circuit regulator should work, just be careful on the terminal positions since there are several types of mechanical regulators that vary in the terminal positions.

 

[fred kobs]

EXCELLANT link!! thank you very much! fred