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AR15.COM
3/24/2011 5:53:53 PM EDT
My dad has a 6500 w diesel generator that all of a sudden only puts out 100 volt on the 120 side and 200volt  the 240 side.. Any have any ideas?? its only a couple of months old.. It is Steel products He bought a a ranch supply...
3/24/2011 6:06:38 PM EDT
[#1]
Quoted:
My dad has a 6500 w diesel generator that all of a sudden only puts out 100 volt on the 120 side and 200volt  the 240 side.. Any have any ideas?? its only a couple of months old.. It is Steel products He bought a a ranch supply...

likely the engine speed governor has come to be set incorrectly.
does the diesel engine have an RPM meter?  
lacking a gearbox, it has to be 1800rpm (4 pole generator head) or 3600rpm (2 pole generator head).

ar-jedi

3/24/2011 6:11:40 PM EDT
[#2]
SenDec is your friend.  Total elapsed hours and RPM.   Easy to install.  

http://www.northerntool.com/shop/tools/product_200319029_200319029
3/24/2011 6:42:37 PM EDT
[#3]

Check engine speed.  Low engine speed will also effect frequency along with voltage.  If you have a multi-meter that can measure frequency, you can judge engine speed by reading freq. at the plug.  If engine speed is correct, but voltage is still low, it would be a regulator issue.
3/24/2011 6:52:19 PM EDT
[#4]
Thanks guys It was the engine speed he had it working before I finished posting this.. He just didn't bother to call me back and tell me.. Again thanks