Remove the old supply line and discard.
Toilet flange is broken concrete floor.
Turn off the water supply the first step is obviously to turn off the water supply.
Make sure you do this evenly from side.
Do so at the shut off valve.
The toilet and replacement flange and drain pipe all need to be kept in position so the seal is not broken.
Flush the toilet and hold the handle.
Remove the old supply line the next step is to remove the toilet floor bolts.
How to fix a broken toilet flange in concrete 1.
Remove the toilet floor bolts evenly from side to side.
3 sep 20 2009 it s your choice whether to screw the flange to the concrete floor and attach the toilet to the flange or to screw the toilet directly to the floor possibly going through holes lined up in the flange.