Disc type bathtub faucets generally do not cause any problems as there are very few parts in the faucet assembly. But if they happen to leak then you will have to know about bathtub faucet repair to fix the leak. Here’s what you may want to do.•    Remove the faucet handle by unscrewing the setscrew holding it.•    Next remove the cartridge screws and lift the cylinder out. Remove the cylinder and wash it in clean water.•    Take the seals off and wipe clean the openings with the help of a pad.•    Now put the seals and the cylinder back and reassemble the faucet.•    Check for any leaks. If there are leaks then you need to replace the cylinder itself.