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  1. Guyfang

    MEP-004a DC wiring problems

    No attachment. The "Bad" thing about the S9 Speed switch is that unless it actually over speeds, you get no idiot light. Since you have no idiot light, no one looks at, or resets the S9. Back in the 70's we had so many problems with the S9, we all got to pressing the reset button whenever we...
  2. Guyfang

    MEP-004a DC wiring problems

    I will look a bit later, but anytime I could not get one to start, the first thing I did was reset the over speed switch, and if that didn't help, removed the over speed switch C-Plug, and stuck a paper clip into pins A&B. Then tried to start it. THEN when that didn't work, started...
  3. Guyfang

    MEP-004a DC wiring problems

    The schematic is hard to read. Bad copy. It's best to look at both the 004A and 005A schematic to find the "best" copy. The circuit where K5 and K3 are in line, is hand drawn in the schematic. In the 70's, the gov was too cheap to spend money on fixing the problem, and in the 80's-90's figured...
  4. Guyfang

    MEP-004a DC wiring problems

    Looks like to me, that the K5, field flash relay and the K3 all need to work so the L4, (starter) can engage. So yes, I bet that's the problem. If you cant find the screws for K5, just take one out of the other relays. One is good enough. When ever I tested a S/P box, I never even closed it...
  5. Guyfang

    MEP-004a DC wiring problems

    You should be able to test the R13 without taking out the Special Relay box, (S/P box) by removing the J37 canon plug from the S9 speed switch, and inserting one probe of your multimeter, (+) set for VDC into the pin F of the plug. The other probe to ground. You should get 24 volts. If not. the...
  6. Guyfang

    MEP-004a DC wiring problems

    Do the panel lights work? Have you reset the CB1. Sometimes you have to pull it out, then push it back in. That's because it sometime doesn't always pop completely out.
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