Then try to loosen it using a correctly sized wrench.
Toilet lock nut stuck.
So you probably won t run across this problem to.
Moving the nut in any direction is progress.
Some nuts have wings that you can grasp with your fingers.
Then finish loosening the nut with your fingers.
If the nuts don t have wings lock a pair of locking pliers around each one in turn.
These are used in a toilet chiefly to secure the fill valve in the toilet tank.
Mamacanfixit mn i am trying to remove a plastic lock nut so i can replace the fill valve assembly.
Jarring the nut can break its bond to the bolt.
There are many ways to remove stuck and stubborn nuts bolts here are some of the ways that i ve found work best these methods contain both simple options and some that use luxurious tools such as an impact gun or welder.
Lock nuts are used to hold fixtures securely in place from below.
Locate the coupling nut on the underside of the toilet tank.
While turning these stabilize the bolt from above with a screwdriver.
The lock nut threads onto the fill valve inlet just above where the water supply hose or tube coupling attaches.
How to remove a stubborn nut bolt.
Gently pull the nut down.
Most of the better companies supplied a brass lock nut and a brass coupling nut to connect the water supply tube.
Super glued locknut on toilet fill valve under tank author.
Tap with a hammer.
The end of the water supply line will come away from the connection.
After breaking the fins off the nut while using wrench i tried holding the nut and turning the part in the tank.
Empty the bucket and place it underneath the water supply line.
Use a pair of pliers to just loosen the coupling nut.
Eventually and in an effort to save money some of the companies started shipping these ballcocks with a white metal nickel composite lock nut and coupling nut.
To make sure you hit the nut itself and not the surrounding threads place a center punch on the nut and strike the punch with a hammer.