Step 3 replace the valve.
Toilet lock nut clockwise.
Prepare the toilet turn the water supply shutoff valve clockwise to turn.
Empty the bucket and place it underneath the water supply line.
Gently pull the nut down.
The end of the water supply line will come away from the connection.
Using various methods to remove the nuts and the bolts when the toilet bolt won t tighten gets your project back on track.
Lock nuts are used to hold fixtures securely in place from below.
Raise the pipeline from the overflow tube.
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.
Remove the nut washer and lock nut.
Remove the fill valve.
I then would proceed counter clockwise with a second offset 6 pipe wrench and try to loosen the nut.
Some nuts have wings that you can grasp with your fingers.
The valve is connected to a rubber ball float.
If the nuts don t have wings lock a pair of locking pliers around each one in turn.
While turning these stabilize the bolt from above with a screwdriver.
Use a pair of pliers to just loosen the coupling nut.
These are used in a toilet chiefly to secure the fill valve in the toilet tank.
Position the new valve in place of the faulty one.
Locate the coupling nut on the underside of the toilet tank.
Then finish loosening the nut with your fingers.
Tightly secure the lock nut washer and nut.