M51 - 24 volt charging route

[Al Capone]

So not getting charging at batteries. I have 27.58 at post on back of generator . So tracing wire it goes into harness and looks like maybe into a silver box on for wall ? Looks like the smaller wire from 24 side of batteries might go into that box as well ? Hard to tell they all wrapped up in harness

 

[NDT]

If you are getting 24 volts to the excite wire at the alternator, sounds like the alternator is not working.

 

[Al Capone]

There are two wires on generator. One large one and one small one . Truck not running large one has 24 volts . Running it has 27 volts . Did not check small one .

 

[NDT]

Oh good your alternator is working. But you are saying the battery voltage stays at 24 while the at alternator voltage is 27?

 

[Al Capone]

So far yes . I have not had time to track down why it’s not getting 27 volts to gauge or back to battery . With all this rain don’t get lot of time