What you have doesn't sound like a stock horn. I doubt that soaking it in solvent will help much. The one I have on my 1951 can be disassembled, exposing the vibrating mechanism and allowing adjustment. You can see it in the photo of the engine compartment. The hemispherical cover on the rear comes off with a single screw, and the bell in the front then can be unbolted from the diaphragm assembly. You might be able to get an original horn from a member here. Try posting an ad in the swap meet section.
Last edited by klhansen; 03/22/20221:18 AM.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
I thought I had a bad horn and it ended up being a bad ground. I ran a new ground directly from the horn to the frame and the horn came back to life. 54 3100.
x2 on the grounds - Had spider nests in the 49 horns. Gave them a good cleaning - but I'd advise against disassembling too far. Like dgrinnan says, grounds are critical - in my case the little buggers had caused corrosion (affecting the grounding points) through the unit but I was able to clean and polish them back to life.
I ran a separate ground wire from the horn bodies as well and that's worked well.
1949 Chevrolet 3/4 Ton - Still Solid. Regular Driver OT Vehicles: 1925 Hudson Brougham Super Six 1950 Chevrolet Styline (Parts) 1952 Canuck Pontiac Sedan Delivery (Well Underway) 1973 F250 4x4 Highboy 1977 F250 4x4 Lowboy
34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
