MEP 803a governor question

[CallMeColt]

Definitely not normal. Looks like you're ground wire is missing and grounding elsewhere? The grey box looks out of place as well.

 

[2Pbfeet]

Hey @LuckeyD, thanks for all the pointers. I finally had a few minutes today to jump back into this mess.

So I followed your recommendations and found 12.1 ohms from terminal 5 to 6. From terminal 7 to 8 I had 1.1ohms. Then I went to TB3. All the combinations you listed were at 0.4-0.5 ohms. Is that close enough to 0? Also, when you say "while checking one set also measure that set from one wire to the other T winding sets for cross shorting in the main gen. These are the weaker points," I am assuming that means with one wire disconnected, check from that wire to the other combinations? If I am understanding that correctly, what I did was disconnect T1 and measure to T4. I got 0.4ohms. With the T1 still disconnected, I measured to T2, and T3. T2 was 0.4ohms. T3 was 5.6ohms. Am I doing that correctly, and why the jump in resistance from T1 to T3???

Also, nothing to note in the bottom of the generator aside from dust. No birds nest of wire, and no smell either.

What would you recommend now? I am planning to follow procedure 4-10.3 and see what that leads to.

Lastly, I was reading and checking @2Pbfeet's posts and noticed this on the back of the output lugs. Does this look normal?
View attachment 953543


Thanks!

I think that is the terminal eye for a what @CallMeColt called out. It looks like a missing ground for one of your EMI suppressors. (GND to neutral?) You might be able to scrape a little of the compound out of the way and resolder it. By the looks of it, it sheared when some one was really torqueing the nut.

I think that your ground wire (100E10) is heading up and to the left in your photo, but double check. If it is missing, it goes from there over to the negative terminal on the engine.

All the best, 2PbFeet