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Lucas Electric Horn Type HF 1140

Good Morning I have a lucas electric horn type HF 1140 It clicks when horn button pushed but no loud bark. It looks like it has 2 adjustments does anyone know how to adjust it and or does it need remagnatizing and can this be done ? Thank you all for your help Charlie

email (option): millcrocfarm@gmail.com

Re: Lucas Electric Horn Type HF 1140

My 1235 horn was seemingly shorted. What I found was the contact points were together. This means the magnet was energized.
The way the horn works is you need a gap between the points. That gap is set by an adjusting screw. When the electro magnet is energized it pull the points apart and you loose the electro magnet. With you still holding the button The electromagnet is energized again over and over again as long as you hold the bottom.
You said you get a click.
You may need to clean your points and or adjust the screw. Just remember if the magnet stays energized you will burn it up.

Me, I would take it apart and repair it on the bench. You will have to fiddle with how many paper gaskets to use to get you in the ballpark for fine adjustment.
I gave up on the paper and used copper washers to set the distance.

Mine how screams like a very angry Jersey devil.

email (option): cbhaws@verizon.net

Re: Lucas Electric Horn Type HF 1140

thank you for your help but not at all the same kind of horn (no shims etc.) do you know can magnetism be repaired? Thank you for your help Charlie

email (option): millcrocfarm@gmail.com

Re: Lucas Electric Horn Type HF 1140

Have you taken your horn apart and cleaned up the points? The shins are just a stack of gaskets to aid in fine tuning. Don’t get sidetracked. If your horn makes a click and you have not taken it apart and cleaned up the insides start with that. Then try the adjusting screw. It varies the gap between the points. Once it gets making a noise continue to adjust.
Good Luck

email (option): cbhaws@verizon.net

Re: Lucas Electric Horn Type HF 1140

There is quite a bit on the internet if you Google Lucas horns. Ron
https://www.nortonownersclub.org/sites/default/files/2019-02/Lucas%20Horn%20sectionL7partB.pdf

email (option): ronpier@talk21.com

Re: Lucas Electric Horn Type HF 1140

Thank you Ron You are the best just what I needed!!! Charlie

email (option): millcrocfarm@gmail.com

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