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  • #1

    M-100 Repairs



    My church's youth group decided to renovate their building and the old m-100 they had sitting in a corner ended up next to the trash cans (and under threat of a baseball bat). I asked them about it and they said that I could have it. So, I have a few questions regarding it's restoration.</p>

    The first thing is that it won't start. When I flip the start switch and hold it on the start motor jumps back, engages a gear and tries to spin it, but can't. Also, when it jumps back, it doesn't always catch the gear. All the run switch seems to do is warm up the tubes.



    I read a few posts regarding similar issues that suggested that oiling might me the solution. If so, how would I go about doing this? I see three places where organ oil may be added (two white funnels and a pot-like thing). I'm not sure how much should be added to each place. Pretty much all of it seems dry. I added five drops to the sponge in the "pot" but it sucked it up so fast and completely that I wonder if it needs more. And I'm not at all sure of what I should do about the white funnels. </p>



    Anyway, I'm no organist (I play piano), so any other tips you might have regarding maintenance would also be appreciated. </p>

    Oh, and here's a picture of the front, if you wish to see. The organ isn't in the most beautiful condition, but even so, I don't see any reason to smash it to pieces, as some would have liked to do.

    </p>

    </p>

    Thanks!</p>
    Tags: None
  • #2
    Re: M-100 Repairs



    Yeah, very similar to my M-101 situation: </p>

    http://organforum.com/forums/thread/52944.aspx</p>

    I'd say fill it with a lot of oil. I still can't quite get mine to work, but I believe once I get my hands on some more oil (like you said on the sponge, and definitely the rest of the funnels) it will do it.</p>

    What I did was take the the chassis off the springs and wedged it upward, then I put my hand under the middle section and manually spun the tonewheels individually(don't do this unless necessary). I believe I have freed the tonewheels of the old rust and gum, but I think the additional "stuckiness" is from that generator with the sponge. So, that's what I'm gonna oil and you should too.</p>

    and thank goodness for saving it from the hammer!</p>

    Comment

    • #3
      Re: M-100 Repairs



      Yeah, I think you're right. After looking at it more and seeing a little on how it works, I think I'll be able to get it running with not much work. Thanks. </p>

      Also, David, I can't believe what you've had to go through to get yours working; I hope it's worth it.
      </p>

      Comment

      • #4
        Re: M-100 Repairs

        I have an M103 and the literature cautions against overoiling. More is not better. Clean before oiling. Fill the funnel cups just once. They are connected to threads that distribute the oil and it is important that they not gum up. For additional assistance try ToneWheel General on the internet

        Comment

        • #5
          Re: M-100 Repairs



          Rane,</P>


          I am a multi Hammond owner and have brought many back from the "dead". Your pic of the oil cup on top of the run motor concerns me. I can see threads wrapped around the sponge but do not see threads, four of them, exiting the cup enroute to the scanner and run motor bushings. It may just be the angleof the photobut they could be missing or broken. Replace if neccessary.</P>


          Oil it up and wait. She should free up in time. You can also spin the generator by hand to help free things up. Turn the flywheel (silver disc between run motor and generator) top toward the front of the console. I wouldn't worry to much about over-oiling this one, it looks dry as a bone. Fill each funel twice and get the spongevery wet but do not puddle or fill the motor cup. Oil the start motor shaft and bushings by hand and lube the gear and clutch that the starter pinionengages also by hand. Fill thefunnels again in a week or so.</P>


          It also looks like the organ had been stored with the generator cover removed. You may not even havea coveras I did not see it in any of the pics. It is very dusty in there. Be verycareful not to damage the small transformer wires when cleaning it up.The M100s are my favorite Hammond spinets. I own one and play it almost as much as my RT3. Best of luck with yours.</P>


          I can't believe the kids wanted to take a baseball bat to it. I'm glad you saved it from that fate.</P>


          H101</P>

          Comment

          • #6
            Re: M-100 Repairs



            thanks so much for the replies.
            </p>


            H101: the threads on the oil cup are, in fact, there, however, a couple of the threads going to the start motor were broken. I replaced them with some regular sowing thread by tying it around the outside edge of the bearing and running it back up to where the original string enters the oil tray. I wrapped what was left of the original string around the new one. Is that acceptable? </p>

            I added about three teaspoons of oil to the funnels (a total of three, not three in each funnel), and everything is coming to life. The start motor can now rotate the generator, however, not easily. I'm guessing that it will take a few days to get everything flowing like it should. I'm really looking forward to playing it.</p>

            I took the generator cover off to work on the organ. I live in the desert of California and up here dust seems to get everywhere despite what is done to protect from it, so that's why it's so dusty. One plus, however, is that it's so dry up here that we hardly get any rust, so give and take, I guess.
            </p>

            Also, it wasn't the kids who wanted to smash it, it was the (adult) youth leaders. I, one of the kids, saved it. As far as what would be commonly expected, I guess that is sorta' backwards.
            </p>

            Comment

            • #7
              Re: M-100 Repairs



              Very acceptable, you are doing great. Give it another week or so and you should be playing it. I'm Glad the run motor/scanner threads are intact. That is an intricate repair. The start motor is easy to lube by hand, not sure if they all had threads but no harm in putting them on. I use a long pinpoint oiler filled with Hammind oil and lube any bushing I can get to with that. With the generator tilted up you can get to some of them from the bottom. Watch out for the AC mains connections on the left front of the generator. They are exposed with the gen. cover removed. Unplug the Hammond when working in there.</P>


              I'm in southwest Riverside County near Temecula. My area is semi-rural and we get a lot of dust when the Santa Ana's blow. I know what you mean, dust is better than rust for sure. The low humidity sure helps some things but is tough on acoustic instruments. I run a humidifier in the house all summer to keep my guitars from getting too dry. Those strored in cases get in case humidifiers. Overall I thing it helps the hammond cabinets to have a 40-45% humidity. It does help keep the dust down as well.</P>


              I'm glad to hear you are interested in Hammonds at your age. Keeping these pieces of musical history alive is a good thing. </P>


              H101</P>

              Comment

              • #8
                Re: M-100 Repairs



                Well, I got impatient and decided to oil the generator from underneath, and, after doing so, it started right up! It sounds great. </p>

                Thanks for the tips, H101. I might try getting a humidifier myself. I have some guitars that could also benefit from one. ...Which brings me to another question: </p>

                I've heard that an organ can be run through a Marshal tube amp for distortion effects and such. I have a JSX tube amp, which would no doubt have similar effects on an organ as a Marshall would, however, I see no obvious way to wire a 1/4" jack to the organ, and I can't find any information on the internet about it. Does anyone here know how this would be done?</p>

                </p>

                </p>

                </p>

                Thanks for the help, everyone.

                </p>

                Comment

                • #9
                  Re: M-100 Repairs



                  Rane,</P>


                  This link will show you a schematic of how to build a line out for you Hammond spinet:</P>


                  http://www.dairiki.org/HammondWiki/LineOutFromASpinet</P>


                  There is a lot of other cool stuff to check out on the hammond Wiki site as well. If you just want to buy a line out, this one is nice:</P>


                  http://www.shopspeakeasy.com/sess/ut...D28SE-HDI%3D29</P>


                  Be careful with bass notes and pushing the guitar amp to hard. You can easily let the smoke out of the speakers. Do a search for "line out" on this forum, there has been a lot of threads on this topic.</P>


                  I'm glad you got your Hammond fired up. Now have fun!</P>


                  H101</P>

                  Comment

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