Remove the fill valve.
Toilet lock nut clockwise.
Some nuts have wings that you can grasp with your fingers.
Remove the nut washer and lock nut.
Use your pliers to loosen the nut under the tank.
Empty the bucket and place it underneath the water supply line.
These are used in a toilet chiefly to secure the fill valve in the toilet tank.
The end of the water supply line will come away from the connection.
Lock nuts are used to hold fixtures securely in place from below.
Raise the pipeline from the overflow tube.
If the nuts don t have wings lock a pair of locking pliers around each one in turn.
Step 3 replace the valve.
The lock nut threads onto the fill valve inlet just above where the water supply hose or tube coupling attaches.
Use a pair of pliers to just loosen the coupling nut.
When you unscrew the screw the pliers will hit against the toilet bowl and prevent the nut from turning and it will loosen.
Position the new valve in place of the faulty one.
Then finish loosening the nut with your fingers.
To be honest before i grabbed the hack saw i would always set up a straight 6 pipe wrench inside the toilet tank and position it at the base of the fill valve with the handle up against the toilet tank.
Tightly secure the lock nut washer and nut.
The valve is connected to a rubber ball float.
Using various methods to remove the nuts and the bolts when the toilet bolt won t tighten gets your project back on track.
Gently pull the nut down.
Prepare the toilet turn the water supply shutoff valve clockwise to turn.