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Joined: Sep 2008
Posts: 140
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2008
Posts: 140 |
I need some info as to how the horn works and how to analyize what is wrong with it. Yesterday the right horn was working perfectly and now it is just dead. I took it apart and all the connections seem to be OK. I don,t know which terminal is positive, or if it makes any difference. It is very hard to measure the coil resistance because it is so low - maybe 0.4 ohms. It obvously has been worked on before. Any help is appreciated. Thanks, Gene
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
The original 33 Chevrolet horn is a vibrator type. The most common problem is the adjustment of the points that cause the vibration. First step is to file the points. After they are cleaned (filed) they need to be adjusted. You will find an adjusting screw which is locked with a nut. Loosen the nut, adjust the points, tighten the nut so the adjustment will not change. The wiring circuit for the horn is a hot wire to one side of the horn constantly. To operate the horn the other leg is grounded to complete the circuit.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Sep 2008
Posts: 140
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2008
Posts: 140 |
Thanks Ray. I will try filing the points, reassemble and adjust with the screw. I guess it doesn't matter which terminal I connect the + wire. I still think it strange that it stopped working so suddenly. Gene
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Joined: Sep 2008
Posts: 140
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2008
Posts: 140 |
Hay Ray, Filing the points worked just like you suggested. Thanks! Honk! Honk! Gene
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Glad you solved the problem. As time goes along you can make further changes as may be required. Be sure and tighten the nut that locks the setting.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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