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Will bleach eat rust?

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super99

11-18-2006 16:00:30

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Has anyone ever used bleach to free up rusted parts? I was told of a guy that restores old 1 cylinder engines and that if they are stuck bad, he pours cylinder full of bleach and lets it set and they come free. Read somewhere, (maybe here) that someone would wrap a bleach soaked rag around a stuck part and in a day or 2 it would come apart. A machinist told me long ago that if a part was loose on shaft, pour bleach on it and it would scald it together. I have a shaft out of a disk that was ran loose and packed with dirt and rust and can't get bearing off to change blades. I've tried diesel fuel and all kinds of panther pee and cant get it loose, wondered if bleach might work? Thanks in advance, Chris

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T_Bone

11-18-2006 23:36:13

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Re: Vinegar Eats Rust! in reply to super99, 11-18-2006 16:00:30

Hi Chris,

It's vinegar that eats rust. Turns it too a black oxide that can be easy washed off. I've been using vinegar for years to remove rust but have never tried to free a stuck piston. Others on the Tool forum have with good results. Do a search on the Tool forum archives for "vinegar" and there will be several past discussions about using vinegar.

As the others stated, chlorine will rust steel very quickly and the "off gas" will kill you quickly.

T_Bone

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John A.

11-18-2006 21:10:54

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Re: Will bleach eat rust? in reply to super99, 11-18-2006 16:00:30

Supper99, There is No-Way-In-Hades,that Bleach in any form removes rust. If anything it makes rust!
Down herein Central Texas we have what is know as "Oak Wilt" or "Oak Decline" it is a diesese that kills most all oak trees in short order. We use straight bleach to steralize our chain saws when trimimg trees in an area where it is know to exist. Also to eliminate the chance of spreading the diesese from infected trees to nnon-infected trees.....Anyway bleach a saw late one evening and put it up in the truck,,,,by morning it will be rusted almost to the point it wont turn at all. So based on that info and personal experience Bleach is not what to use!!!!!
Later,
John A.

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Oldmax

11-18-2006 18:38:21

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Re: Will bleach eat rust? in reply to super99, 11-18-2006 16:00:30

I wouldn't think Bleach or 5% "Chlorine" would do much to free up anything as it is very corrosive 100% Chlorine will rust the best Stainless Steel in a mater of months. And if uou add water will form Hyocloric Acid . I worked with Chlorine Gas for 30 Years Repaired Chlornaters that Metered Chlorine Gas for Water & Sewer Plants . Unless you know about Chlorine DON'T MESS WITH IT .

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super99

11-18-2006 17:11:52

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Re: Will bleach eat rust? in reply to super99, 11-18-2006 16:00:30

It's an old John Deere with sealed bearing that you take apart and rebuild. I did one a couple of years ago and parts were about$75, so I don't want to ruin bearing if at all possible. Torched blades off and have tried a press and hammered myself silly trying to get if loose. Nothing yet. Have read on here about putting atf fluid in stuck cylinders in engine to loosen them up, wonder if that might work? Cut a barrel in half and get some used atf and soak it? Chris

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Nebraska Cowman

11-18-2006 17:03:48

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Re: Will bleach eat rust? in reply to super99, 11-18-2006 16:00:30

water works as good as anything but not after you put oil on it. the diesel fuel will keep the bleach out I think. But yeah, I'd keep soaking it down with the garden hose. Whenever I dissasemble rusted equipment I try to do it after a rain. You'd be surprised how much better things come apart.

Even bad boys are just as good as they can be

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Janicholson

11-18-2006 16:22:40

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Re: Will bleach eat rust? in reply to super99, 11-18-2006 16:00:30

In my opinion bleach will do very little to penetrate that bearing. If the bearing is going to be replaced, slice it nearly in half with a abrasive cutoff saw (maybe in a 7-1/4 elecrric saw, or a side winder grinder) on one side and use a cold chisel to split it. If the bearing is good, warming it up with a torch uniformly till it is way to hot to touch, but not starting to change color may loosen it enough to drive it off.
Tou can also drive on it with a suitable piece of pipe in the opposite direction you need to go, then polish the vacated spot with 250 open coat cloth and lube it befor driving it off in the way it needs to go. If the blades are in the way, smoke them off with a blue flame wrench and have at it. Good luck, JimN

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