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Old 05-05-2018, 09:23 AM   #1
Gnico
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Default F.M. Horn Rebuild Kit Question

I have a Model FM Labs horn that most likely needs a new diaphragm. It works but only plays a long ahoo with no ga Not sure if the on line repair parts are the same for all horn models.
I see this kit on Mikes
http://www.mikes-afordable.com/product/A13804RK.html

or Snyders for this part
https://www.snydersantiqueauto.com/h...m-battery-type
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Old 05-05-2018, 12:25 PM   #2
Badpuppy
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Default Re: F.M. Horn Rebuild Kit Question

You mean EA Labs model FM. Mike's kit will rebuild most of it but you may need the ratchet too. If the adjustment and lube doesn't work, open it up and see if you can determine the problem. Says "Ah" when the motor spins up, "OO" while it runs, "Gah" when it spins down. Sounds like it just needs a little oil on the felts.
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Old 05-05-2018, 08:50 PM   #3
Gnico
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Default Re: F.M. Horn Rebuild Kit Question

Quote:
Originally Posted by Badpuppy View Post
You mean EA Labs model FM. Mike's kit will rebuild most of it but you may need the ratchet too. If the adjustment and lube doesn't work, open it up and see if you can determine the problem. Says "Ah" when the motor spins up, "OO" while it runs, "Gah" when it spins down. Sounds like it just needs a little oil on the felts.

Thanks, you are correct on the EA I will try some lube and see if I can get it to work better.
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Old 05-06-2018, 08:00 AM   #4
Steve Wastler
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Default Re: F.M. Horn Rebuild Kit Question

Also Make sure you have the paper gaskets on both sides of diaphragm, makes a huge difference in how it operates
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Old 05-06-2018, 01:07 PM   #5
Ron in Quincy
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Default Re: F.M. Horn Rebuild Kit Question

also keep the armature clean. Always use plain fine sandpaper to clean the armature.

the faster the armature turns the better the sound.

some of the replcement diaphrams are junk, the centter contact is poor quality and wears off fast.

keep the felts lube.

ron
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