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this is the best way to remove a steel bolt that is in aluminum housing due to oxidation and corrosion.
Manifold studs break, and most extraction methods include drilling it out, and ruining the aluminum threads. Here's a neat way to use a battery and a welder ...
24 Νοε 2016 · Do a cone drill and a cone bolt tip, arc weld the bolt. Do a passing-through drill almost the bolt diameter to make it weak, then pass another threader, and then the one the bolt was. Use salted water electrolysis to dissolve steel. Then finish unscrew it by any means :) My experience: Propane torch, very few tries, but see they need a lot of heat.
15 Ιουλ 2016 · Smacking the head of the bolt a few times with a hammer can help, as can doing a small 'tightening' turn before loosening it. However, the best way is to hit it with heat. The aluminum case itself is going to expand significantly faster than the bolt, so that can break up the corrosion enough to unbolt it.
A common problem when working on older furling systems is that the screws are often frozen in place from either corrosion or sometimes Locktite. And sometim...
Heat the corroded bolt by placing the neutral flame of the oxy-acetylene torch 3 to 4 inches away from the head of the bolt. Aluminum will draw heat from the bolt, so you will need to heat the bolt longer than a standard carbon bolt.
13 Ιουν 2013 · Heat the bolt or stud up to red hot and quench it as best possible. You might have to repeat this several times, but what it is doing is shrinking the threaded section so it will pull away from the corrosion.
