If water in your toilet tank trickles continually and the problem isn’t in the inlet-valve assembly you may need to adjust or replace the float mechanisms or the flush-valve assembly such as the overflow tube, valve seat, tank stopper, guide rod, or lift wires. You may even need to replace the entire assembly. Here are 6 easy steps for relacing the flush-valve assembly.
1. Turn off the water supply and drain the tank so you may disconnect the water supply pipe. For a bowl-mounted tank remove the tank bolts and gaskets left off the tank. For a wall-mounted tank, remove the connection pipe by loosening the pipe couplings.
2. Then unscrew the locknut under the tank and remove the lift wires, guide rod and stopper. Now left out the valve and overflow tube.
3. Assemble the gasket on the new flush valve by inserting the assembly through the tank bottom. Position the overflow tube and assemble the conical gasket locknut. Once complete, tighten.
4. Slip the guide rod and collar down the overflow tube to install a stopper with lift wires. Once the guide rod is centered over the valve seat, tighten the adjustment the screw.
5. Hook the upper lift wire onto the tip lever. Than slide the lower lift wire down through the upper wire and guide rod. While using the adjustment screw, adjust the rod’s height.
6. So the stopper will droop straight down, screw the tank stopper onto the lower lift wire. Replace the bowl-refill tube and reconnect the tank then reverse the above steps.