Horn Rebuild

[PK]

I am trying to rebuild a horn from my 1951 M38. It is receiving power but it hums. I have disassembled the horn and it is dirty and rusty. Any help woulud be greatly appreciated.
PK

[oilleaker1]

If the windings are still good, (hums is good), clean the contact points with fine wet or dry sandpaper, re-assemble, and turn the adjustment screw to get the tone. Test it on your pair of batteries. After that, buy a good one that works. They are cheaper to buy another than send it to a re-builder. I bought a 24 volt new sparton horn that had the same guts, but was different on the outside, , took the guts out and installed in my M 38 A1's body, and it worked. The cost was around 30 bucks. Save it if you can. John

[MODIFIED]

be sure you have a good solid ground when testing.