Removing faucet mounting nuts is somewhat similar to removing lock nuts on a toilet tank. Once you have cut through the nut, use the flathead screwdriver to push the two ends apart, then remove the lock nut with your hands. Use caution as not to go too deep or cut through anything else. Wearing safety gear, use the angle grinder to cut through the plastic nut carefully. This method may not always do the trick because some angle grinders will not fit in the close quarters of the tank. If all other methods fail to do the trick, you can try using an angle grinder to slice through the plastic.
Using both hands, grip the pliers while rotating to spin the nut. Come from either the top or bottom, not the side. Set the pliers on the narrowest setting that will fit around the lock nut. For this method, you need a pair of locking pliers. Now, if the locknut is still firmly fixed in place, you can try to use a pair of pliers to unscrew it. Once you have heated the lock nut, use a strap wrench, basin wrench, or pipe wrench to attempt to remove it.
This should help lubricate the lock nut enough to remove it. Hold the hot wet rag or towel against the lock nut for a few minutes. Hold the rag under hot water until it is saturated, then wring it out. Strap wrench, basin wrench, or pipe wrench.To remove the stubborn lock nut, you can try to use a hot wet rag or towel to lubricate it. Once that has sat for a while, attempt to remove it using your hands or a pair of pliers. Simply apply the plumber’s grease to lubricate the plastic nut, then let it sit for 10 to 15 minutes. One of the best ways to remove a difficult lock nut is by using plumber’s grease. Plastic lock nuts can be tricky to remove as they can damage easily. Now, if you have completed the steps outlined above and the locknut refuses to budge, you have a couple of options you can try. Turn the plastic nut counterclockwise to remove it. To remove the nut, you can use whichever tool you choose: a pair of pliers, a spud wrench (specifically designed for removing hex nuts), or an adjustable wrench. It should be right above where the coupling was connected to the tank. Once you have disconnected the water supply hose, locate the lock nut. On the underpart of the toilet tank, there is a plastic piece that connects the water supply hose to the tank. Take another towel and lay it out on the floor underneath the tank. If there is residual water in the bottom of the tank, use a towel to soak it up. Continue doing so until the entirety of the water has drained. To drain the tank, press down on the handle to flush the toilet. Remove the lid of the toilet tank and carefully place it aside. Next, drain the water in the toilet tank.
Once you have located the supply valve, turn the handle all the way to the right to cut off the water supply. Simply follow the supply hose to where it connects to the supply valve, which is located on the wall. The water supply valve on the toilet is easy to find.
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