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Need Tech Support for Old Miller Legend

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  • Need Tech Support for Old Miller Legend

    Just as a project, I bought an old Miller Legend engine welder. I think, but am not sure, it was made in 1980.

    -Where do I find the welder's serial number?
    -The Onan CCKMS737187J engine has no spark. The coil is getting 12V. Does this thing have points, or is it CDI?


    I should be able to handle the electrical diagnosis, as I have a PDF of the tech manual, but it tells nothing of the engine.

    There will be other questions, but that is enough for now.

    If anyone knows where I can get a PDF of the engine repair manual, that would really be helpful.
    ____________________________________________

    I don't need to find myself. I'm always at my lathe.

  • #2
    Is this your engine

    https://www.gravelymanuals.com/pdf/O...l_19860600.pdf

    Comment


    • #3
      To quote Monty Python, "Brilliant!"
      Yes. That's it. How ever did you find it? So grateful! Found the service manual on the same site! Now, to get to work.

      If I can do this, there are people out there who actually buy stuff like this.

      When I was in IT, half of the really tough questions I answered came from forums. If my employer had known, I would have been instantly fired. As it was, I got raises.
      ____________________________________________

      I don't need to find myself. I'm always at my lathe.

      Comment


      • #4
        Now, for the next question. Where's the serial number on the Miller Legend? Miller won't cite part numbers without the serial number.
        Last edited by buffumjr; 07-06-2018, 06:18 AM.
        ____________________________________________

        I don't need to find myself. I'm always at my lathe.

        Comment


        • #5
          Found it! I took a toothbrush to the corrosion on the faceplate. The serial number was between the settings knobs. Stamped in, but now hard to read. Had to guess the last two characters. Definitely 1980.
          \
          It's not a Legend, it's an AEAD.

          So far, the tank was atrociously dirty, the #2 cylinder intake valve was stuck open, it's not pumping gas, the fuel filter bowl leaks, and there's no spark. This afternoon, I investigate the spark.

          I took an amble over to a lawn and garden machine repair shop. Onan parts are pricey! Hopefully, they just need a good cleaning.

          The repair manual is really good. Reading it. Good explanations. Thanx Popscott.
          Last edited by buffumjr; 07-06-2018, 11:58 AM.
          ____________________________________________

          I don't need to find myself. I'm always at my lathe.

          Comment


          • #6
            Great news. The coil tests good. No shorts. Resistances are within tolerances. That's good news because the coil is a $233 part.

            Better news. It has points! Like on a '65 Chevy 283. The bad news is the points are shot. That may be where our spark loss lies. Now, to find points and condenser set.
            ____________________________________________

            I don't need to find myself. I'm always at my lathe.

            Comment


            • #7
              Anything Onan....plus $ plus $ plus $. Nothing cheap in a teal box, that’s for sure.

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              • #8
                Points and condenser inbound. $35. Not bad for 1980's tech.

                Tomorrow, I start investigating the fuel pump and carb.

                ____________________________________________

                I don't need to find myself. I'm always at my lathe.

                Comment


                • #9
                  For parts try Onanparts.com

                  Like anything vintage, be thankful that parts are available at all, even if they are pricey.

                  Speaking of parts, anyone try the chinese coils that are now available on ebay?
                  MM250
                  Trailblazer 250g
                  22a feeder
                  Lincoln ac/dc 225
                  Victor O/A
                  MM200 black face
                  Whitney 30 ton hydraulic punch
                  Lown 1/8x 36" power roller
                  Arco roto-phase model M
                  Vectrax 7x12 band saw
                  Miller spectrum 875
                  30a spoolgun w/wc-24
                  Syncrowave 250
                  RCCS-14

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                  • #10
                    Waitin' fer parts. (sigh).

                    Can't diagnose the engine further until I start it.
                    Can't diagnose the generator until the engine is running.
                    Can't diagnose the welder until the generator is working.

                    Stalled.
                    ____________________________________________

                    I don't need to find myself. I'm always at my lathe.

                    Comment


                    • #11
                      Defective spark plugs. How 'bout that? Filed the points, and they I got spark with an old plug. Tomorrow, I buy new plugs. A vendor had sent new points, but they weren't the right ones.
                      ____________________________________________

                      I don't need to find myself. I'm always at my lathe.

                      Comment


                      • #12
                        Easy enough. Glad you got to the bottom of it.

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                        • #13
                          Link to the History of the machine. I owned 1987 and 1992 models, make sure you match the size of the welding leads for the distance and amps you expect to be using in order to get the most out of the machine. http://stickweld.com/old-welders/the-miller-aead-200le/

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                          • #14
                            I plan to replace the oddball connectors with industry standard Dinse sockets. Today, I paint the gas tank. It had rust under the original paint. Two days to let the paint cure, then I mount the tank and try to run the engine. Lots of rust inside the tank. I may have to weld up another tank.

                            Everything is taking so long.

                            They don't sell the face plate, anymore. I'm going to have to have a graphics shop reproduce one. If they want too much, I'll have to learn that skill. As soon as the forum's software stops griping about the file, I'll upload a picture.
                            ____________________________________________

                            I don't need to find myself. I'm always at my lathe.

                            Comment


                            • #15
                              Here's the photos. The first is how it looks now, the second is one downloaded from Google. There's some of the new that is too blurry to read. This was the best I could find.
                              Last edited by buffumjr; 07-25-2018, 11:54 AM.
                              ____________________________________________

                              I don't need to find myself. I'm always at my lathe.

                              Comment

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