OK ejl6658. So I didn't test for voltage across the diode when I used the test light. I just used the test light. I figured it wouldn't lie.... So you're saying that I should use the test light and check for voltage?
You really need to use a voltage meter to check a diode. I am not familiar with your test light and how much voltage will make it light up. If you got conflicting results checking with HF meter with diode test I was giving you the info to test with a battery and voltmeter and what the voltages across the diode should be forward and reverse biased. Wiring diagram is to small for my old eyes to read and suggest what the diode function is.
My other response to Billy O was an explanation of why you see diodes spliced into tractor wiring.
One day a guy who owned a dozer was at my house saw it,, and had to have it.
So, my Lincoln welder was gone, but, I got a new Miller Bobcat engine welder.
I did adapt a small automotive muffler to it,, the original muffler was LOUD!!
ejl6658 I really appreciate that.
Under the symbol for flashing diode, it looks like it says 3A.
The two circles on the lower left portion of the diagram are the brass rings with the brushes and under that it says ROTOR FIELD.
.....We paid for it (~$300) .....................................I did adapt a small automotive muffler to it,, the original muffler was LOUD!!
That's a great deal there CADplans. This thing is very loud too. I wont even start it without ear muffs on.
The oval muffler pointed up,, the Lincoln sounded like an electric motor with that muffler on.
"The magneto flashing coil picks up dc voltage from the Kohler engine magneto. This dc voltage 'flashes' the exciter field in the alternator to restore residual magnetism for the purpose of initiating power output. "
Some Generators will not make power after sitting a while.
I have a coleman gen set I got new maybe 15-20 years ago and in the service manual with it, it describes how to "reflash" using a small lantern battery to excite it if it no longer produces power.
I've never had to do it.