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Tractor Talk Discussion Forum

Can a carb float be repaired

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old

10-13-2006 17:42:25




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Got a float from an Allis D-17 that has a leak in the seam. Has any one ever been able to repair something like this and if so how?? Thanks.




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Jim K

10-13-2006 19:10:29




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
Yes I've done it a couple times with success on older Tecumsa snow blower engines.



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coflyboy

10-13-2006 18:43:06




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
Check your email.



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Ron (N. AZ)

10-13-2006 18:19:04




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
Old, take a look at this page. Maybe it will help.
Look under the section on brass floats.


Brass Float



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Janicholson

10-13-2006 18:10:11




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
No problem Old,
First it is necessary to get the fuel out. Turn it so the crack is down and gently squeeze it with your fingers a bit to give it a wee bit of incentive. repeat till it stops coming out. An alternative to this is to use an electric pencil soldering iron of 35 watts (not a big iron ,they are too hot, or a gun, they have sparking triggers) and with the crack down, heat the material in pulses to force the fuel out under vapor pressure. When no more comes out, look over the float. you will find a spot of solder that is alone and not by a seam. Unsolder this by heating it and brushing the solder away with copper wires fuzzed from the end of a stranded piece of electrical lead, or mini wire brush. (this allows repair without pressure on the seam). Prep the crack by using 250 paper on it to shiny.
Use rosin core tin/lead solder (not silver, it takes way too much heat) and solder the crack shut. Let the float cool, then with a hot dab of solder on the pencil tip of the iron, re solder the "vent". Simple 10 minute job. do not over heat the brass as the entire thing will come apart. It takes a bit of noodeling to flow the solder but it is a nice repair. JimN

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jmixigo

10-13-2006 18:02:26




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
Old I helped a feller do one when I was a kid.
It was off a big ol gasser dump truck. He opened it up first to clean the iside good, he said it would "blow out" when we heated it if they was any fumes inside. Then he used soldering paste to make the joint cold an then worked it with a big soldering iron. He heated the iron with propane an worked the joint after he "silvered" the tip with wire solder.
Wish I could tell you it worked but in truth the old truck had so many problems it was hard to tell if we done much good.

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Gerald J.

10-13-2006 17:57:08




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 Re: Can a carb float be repaired in reply to old, 10-13-2006 17:42:25  
It should be possible to solder a brass float without adding too much weight. The hazard is that heating one place can crack another.

It would be easier to seal that seam with SealALL a duco type cement that withstands gasoline and ethanol. After cleaning, a little smear along the seam should do it. I've seen it at walmart and hardware stores.

Gerald J.



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CENTAUR

10-13-2006 18:34:36




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 Re: Can a carb float be repaired in reply to Gerald J., 10-13-2006 17:57:08  
Yes I have repaired many as this was my work for years.If it is collapsed first you will find a soldered over small hole.Melt the Solder till you see a hole.Then blow air across this (orafice)till it comes back into shape.This will also remove any gasoline that may be in there.This will return normal buoyancy after you seal that hole you made earlier.You also have to fix the reason if gas got in there.I also used the sealers.

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