Use a pair of pliers to just loosen the coupling nut.
Toilet unscrew lock nut.
To locate the supply valve follow the water supply line or hose from the underside of the tank to where it meets the supply valve at the wall.
Some nuts have wings that you can grasp with your fingers.
Start by rocking the bolt by tightening then loosing this may be all you need to break through the rust.
While turning these stabilize the bolt from above with a screwdriver.
I have done this before and always seem to have a problem.
When you unscrew the screw the pliers will hit against the toilet bowl and prevent the nut from turning and it will loosen.
Loosen the nuts with an adjustable wrench.
Try and avoid 12 point wrenches and sockets as they likely to slip and strip the bolt head.
Most of the better companies supplied a brass lock nut and a brass coupling nut to connect the water supply tube.
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Another great tool i have found that is made by irwin tools is there original locking wrench.
Step 3 spray penetrating lubricant in the threads of the plastic bolt if the nut does not unthread easily.
Shut the water supply off for the toilet where you will be removing the lock nuts.
This time i cannot remove the two plastic nuts under the tank holding the metal intake tube to the tank and the valve.
Grip the top of one of the bolts with adjustable pliers then fit an adjustable wrench around the 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.
If you can t grip the nuts with the wrench use a pair of pliers.
Locate the coupling nut on the underside of the toilet tank.
I am trying to replace the valves inside the toilet tank.
Hold the bolts in place with the screwdriver as you turn the plastic nuts on the underside of the back of the toilet s bowl.
If the nuts don t have wings lock a pair of locking pliers around each one in turn.
Cut off the stuck bolts if you cannot remove the screws.
Place the plastic nuts in a safe location and pull up on the back of the toilet s seat.
Once it begins turning release.
Empty the bucket and place it underneath the water supply line.
Turn the handle on the supply valve all the way to the right to cut the water supply.
Try a 6 point wrench or socket on your seized nut bolt.
Heat the tip of an old screwdriver and it ll split the nut when it melts through to the shank.
I have tried every wrench i have crescent plumbers and locking pliers and now the nuts won t come off and the tube and valve are moving instead when i.
Hold a hacksaw blade up to the nut where it meets the underside of the bowl.
Hold the bolt steady while you turn the nut counterclockwise.