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Removing Rusted Toilet Tank Bolts


rusted tank bolts resized 600Rusting toilet tank bolts can be surprising. Either you didn’t realize it, or you noticed a drip which caused you to look at them. Sometimes during a quick adjustment, you lift the lid of the toilet tank and you see two giant balls of rust. Underneath all of that rust are the heads of the tank bolts. It’s a good idea to replace them even if they aren’t yet leaking.

You may find that when looking underneath the tank (there the bolts are held to the bowl with washers and nuts) that there is a large amount of rust and corrosion here too.

The first step is to remove the old rusted bolts. Usually, you would use a screwdriver and a wrench. The screwdriver is for the bolt head and the wrench for the nut underneath the tank. However, with all of the rust and corrosion, you won’t be able to get it to budge. Sure you can try, but you may even snap the bolt, which is fine.

Try a hacksaw and cut through the bolt. This will allow you to pull the tank off of the bowl but you will be left with the stubs of the bolts sticking out. Tap lightly on the stub and push the bolt head out. You will need to clean up the area where the old bolt head was or you may develop another leak if the new washer doesn’t sit right.


We have the rusted, leaky bolts--tried sawing, but after 3 hours, gave up. Would Liquid Wrench help disolve the rust? If not, is there any other way to lossen these frozen globs of metal??!!!
Posted @ Friday, February 17, 2012 12:01 PM by Rosie
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