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Colombianguy_III

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 #1 
Hey Tim. I had some questions to replace the bellow gaskets on my Hohner Corona III.

What tips do you suggest to have a good seal on the bellows to keep air in?

1. Will there be old glue or residue that needs to be removed once gaskets are taken off (I imagine an x-acto knife would be the proper tool)?

2. I understand that Hohner sells the bellow gaskets as self adhesive. Anything special I need to do with the gaskets? Or, do I just replace?

3. What if I replace and there is still air escape? What could I have done wrong?

I'm trying to get as much research done before I get this done to my box. I can hardly play due to the air escape on the treble side. I fixed the popping-out of bellow pins issue (added some rubber cement to the ends of the pins). There is still a lot of air coming out, so wanted to see if the gaskets were the problem.


 

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artlsx10

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 #2 
Your gaskets are probably ok and the wooden bellows brace may be warped cause the gaskets to not seal properly. I replaced mine thinking the gasket was bad but still had leaks. That's when I noticed that the bellows brace was warped.

I tried using cardboard "shims" to help seal the areas that leaked. It just kept shifting my airleaks around. I made a cardboard "gasket" and it worked perfect. I'll try to find some pics of what I did.
artlsx10

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 #3 




I used some gift boxes that you would wrap clothes in for a gift. I used one on one side and I needed two for the other side. It actually seals better than when it was new. Keep in mind it is a panther and not the higher quality corona. Anyway, worth a try before you spend some $$$ on replacement gaskets.
luistorres344

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 #4 


this is what i used on my vintage corona guys, its like a 1/4" thick but if you press it it reduces in size i tryed alot of different stuff even the card board and so far this is the best, its made out of the same material as the original gasket, on the  picture it says rubber foam but if you go to home depot youll find different kinds i got polyfoam with adhesive on one side, 1 roll and did both sides of the bellows and still had some left over, it costs less than 4 dollars & worth it all the way. my box leaked a lot of air thru the gasket and to be honest it looked warped but this gasket fixed it & its easy to remove 2.

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Colombianguy_III

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 #5 
Luis, thanks for the information. I've been looking for something like this. Now I can go locally to get it. Did you remove the original gasket or just put the new over the old?

Art, I also appreciate your response and want to check out to see if anything is warped. The cardboard was cut precise. Did you use an x-acto to cut it? How did you get it perfectly cut? Nice pics guys!!!

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artlsx10

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 #6 
Lol, not too precise. I traced the bellows onto cardboard. I rough cut it with scissors then cleaned it up with an exacto.

Also, when I replaced my bellows gasket, I used a plastic scr@per to remove as much foam and adheasive. Then I used goo-gone to remove what was left. Make sure to go back and clean it with rubbing alcohol. This will help clean up the oily residue, from the goo-gone, and help the new gaskets stick to a clean surface.
luistorres344

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 #7 
No i removed the old gasket and cleaned ir really well with a sharp blade, make sure u remove any adhesive residue and if the celluloid has a rough surface where the gasket goes, make sure u scraipe it with a blade til its smooth and put the gasket with the adhesive side to the bellows. If just in case ur bellows are warped this will fix it because its thick.
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Colombianguy_III

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 #8 
Great tips guys!!! Man, I feel like I want to do it this weekend.

Art, just to make sure, the cardboard goes first before the foam correct (common sense says yes)?

Luis, there is no need to cut the foam to shape (width) for it to fit properly?

Thanks for your help. It is really appreciated! Perhaps a repair 101 should be added to the forum with pictures as the ones shown. People can contribute repair tips! BTW, the width of my bellow gaskets are about a 1/4" wide.

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artlsx10

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 #9 
Not sure what you're asking...
The cardboard was used as a cheap (free) way to fix the leak. No adheasive is used. It just sits between the box and the bellows. Kinda a cheap way to make your gasket "thicker" by adding more gasket to it by using cardboard. Hope that helps.
luistorres344

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 #10 
No there is no need to cut, at least i didnt have to, if u buy the roll from home depot its like a 1/4 inch wide & 3/8inch thick, just install it like it is and if u are going to replace it there is no need for the card board because the gasket is thick enough to fill in if your bellow is warped
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Colombianguy_III

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 #11 
Luis, went ahead and bought the same stuff from the picture. I installed it this morning over the old gasket (didn't feel like taking off old stuff). I had to press it down for a while to get the pins in. However, I did succeed! Man, no air escape! Awesome. I'll test it through out the day to see what happens. It plays and sounds better. Certain areas on the bellows, the foam kind of pops out, but that's not a problem (we can cut around that if needed). Thanks guys for the help. This was truly a great fix after years of air escape.

Btw, Art... You answered my previous question. I thought there was a need to glue the cardboard on to the bellows.

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luistorres344

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 #12 
Glad it helped, however i would have taken the old stuff off because thats were it was leaking from originally but o well, it wasnt that expensive you can always doit again
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Colombianguy_III

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 #13 
I figure if it falls off with time I can go ahead and glue it on. Been playing all day and even the pins stay in.

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lcpl_sanchez

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 #14 
You can buy weatherseal at Lowes/Home Depot. I recently repaired one of my boxes that had a leak...

http://www.reyesforo.com/post/My-70s-Hohner-Project-5678254


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Colombianguy_III

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 #15 
It helps a lot. I need to repair my other box. I just took the weather seal and put it over the old gasket. It plays awesome!
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therose

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 #16 
I just did the weather seal job on an old corona II. I removed off the old black gasket as well as a flimsy weathrseal that was over the original gasket. It's better to do it right by removing all from the surface the first time as was evident in my discovery. No air escaping...easy fix. The bracket was a little warped but by using the same seal as was pictured on this post by Luistorres344, it seals the bellows just right. Thank you everyone for the great advise over the years.
luistorres344

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 #17 
Glad it worked for u too (therose), its been almost a year since i intalled mine and its still working the same as when i first did it, worth the $4.00 dollars spent. P.S just in case there was a shortage of weather seal at home depot, i bought 2 extra rolls for future use, lol.........
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"Los músicos no se retiran: paran cuando no hay más musica en su interior." autor: Louis Armstrong
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