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Advise on stuck fasteners

F

flyingace

Member
My tractor is 45 years old. It seems like every repair involves removing one large, frozen nut or another. For instance, I have wheel weights I need to remove to fix my right brake, but the bolts holding them on are STUCK! Rusted and immovable.

Can I get some ideas from the experts out there about the best way to get these things off?
 
Heat with torch or use a 50-50 mixture of acetone and automatic transmission oil as a rust buster.

When you put it back together wire brush/clean everything and use anti-seize
 
It is something that you learn to play around with based on what works for each case.
Many times, I heat the nut, then cool it down quickly with PB Blaster or your favorite over priced miracle spray lubricant. The cooling process pulls some of the lubricate in to the threads.
If possible, use a good air impact wrench. It will typically hammer it off for you.
Then, when putting it back together, do what others say about anti sieze.
 
(quoted from post at 09:52:59 07/24/11) It is something that you learn to play around with based on what works for each case.
Many times, I heat the nut, then cool it down quickly with PB Blaster or your favorite over priced miracle spray lubricant. The cooling process pulls some of the lubricate in to the threads.
If possible, use a good air impact wrench. It will typically hammer it off for you.
Then, when putting it back together, do what others say about anti sieze.
Click to expand...

The heating/lube/cooling seemed to do the trick. I got them off. The air impact wrench was a necessity.

Thanks all for the help.
 
Another help sometimes is to try to tighten the nut and then try to back it off. The air gun works great for this.
 
In the 20+ years since I discovered it I
have not broken a fastener with Kroil.
Soak it good and let it sit. If still a little
stubborn, put a propane torch to it to
heat and it will break free.
 
Don't know what the heat and cooling is all about. Heat expands the nut. Cooling shrinks it back down. Was taught in shop class in 1952 to use carbon arc on th enut to make it red hot. when red hot turn the nut off. If it tightens down as it cools you heat it up red hot and turn some more until it is off. Taking stuck rusted nuts off bolts while red hot has worked like a charm for my since 1952.
 
Here and there you find fasteners that you can't get true replacements for, or the fastener is close to something sensitive, but 90% of the time you can spend your time on something else by just grabbing the flame wrench and blasting it off. At the end of the day Friday I noticed that I had a bearing gone on the thrower on my baler. I pulled it to the shop, performed a little disassembly, then cut the inner race off the shaft. I had to work judiciously around the frame, but the race glowed red, while the shaft stayed black, as I cut a groove, and the race practically fell off.
 
like the other posters advised, heat and a good penetrating oil. another thing that helps, if there is a lot of corrosion around the fastener, use a small sandblaster and clear the rust away it, then apply your penetrating oil. if you have an impact, turn it down to a lower setting, or cut way back on the air pressure and rattle the nut/bolt forward and reverse several times, and keep applying penetrating oil. this will get the oil to soak in better. sometimes you need to soak em for a few days, and rattle em with the impact. a few whacks with a hammer will work too.
 
Spraying solvents on hot steel will get you.Brake cleaner is bad in this respect.Welders have landed in the ER welding on parts that have been cleaned with brake cleaner.
 
I second the worth of an air impact. Had some studs and nuts holding exhaust parts to an exhaust manifold that I thought I would never get off save using a hacksaw or torch. Using a cheap air impact wrench did the trick. Alternately five seconds counterclockwise and five seconds clockwise, etc., helped a lot I think. Soaked it in penetrating oil during a couple of weeks before though.
 
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