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Problem with AFI air horn

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Old 07-28-2010, 05:56 PM
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Default Problem with AFI air horn

Duel AFI air horn not working. Pump seems to work, powers up and pumps out air. Air to horns seems ok, took apart and cleaned inside both horns. Still do not work. Can these pumps just fail enough to appear working but not pump out enough air to blow horn? Any help, thanks
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Old 07-28-2010, 10:53 PM
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It doesn't take much air to blow those horns. If you can blow in the hose the horns should sound. If the horns work, then you've isolated the problem.
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Old 07-30-2010, 11:16 AM
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did you try tuning them? ... not sure what model you have but i have to dial mine in to get the right sound then tighten the lock nut.
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Old 07-30-2010, 02:21 PM
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I have seen the diaphram in the horns go bad. You can get replacement parts. I have replaced the diaphram and it worked fine. I have replaced the diaphram in others, and they still didn't work, I had to replace the whole horn.
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Old 07-30-2010, 06:34 PM
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I have a single trumpet horn on my boat. This year I had to take out the diaphragm and clean it thoroughly; a lot of salt and corrosion had built up.

Once I cleaned it up and reassembled, it worked perfectly again. Before that, all I heard was a rush of air.
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Old 07-31-2010, 08:32 PM
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Originally Posted by gerg View Post
I have a single trumpet horn on my boat. This year I had to take out the diaphragm and clean it thoroughly; a lot of salt and corrosion had built up.

Once I cleaned it up and reassembled, it worked perfectly again. Before that, all I heard was a rush of air.
Ditto. Remove the clear plastic diaphragm, clean and dry it, should do the trick.
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Old 09-11-2010, 09:04 AM
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Want to thank you guys for the advice. Was having problem with air horns not working, did google search and found this posting. Took apart my airhorns, cleaned the clear plastic diaphrams (they were filthy), they now work beautifully. I registered to this site 5 mins later. Thanks again!!
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Old 03-25-2012, 03:04 PM
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Default AFI Air Horn Replacement Diaphragm

The diaphragm on my AFI air horn is cracked. Can someone please tell me where I can order a replacement? Thanks!
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