Replacing Pop Up Assembly
Preparing The Work Area:
Before jumping start on this particular task, you must first be prepared to get the job done right at the first time.
In order to repair or replace a sink pop up assembly correctly, you must know about the possible complications that you might run through it and about the parts and tools needed for the job.
If you have a broken pop up, chances are that the rest of the sink plumbing underneath are also in bad shape and might also need to be replaced and, this could be one of the complication that you should be aware of.
A plumbing fixture that is directly connected with the pop up assembly is the tube p-trap and, in this case, I would recommend that you replace both systems at the same time.
So, below you will find a quick list of tools and parts that you will need for the job.
Tools, Parts & Accessories:
1 - Different sizes of channel locks
2 - Screwdrivers Phillips and flat heads
3 - Pipe saw or abs piper cutter
4 - Brush
Old rags, a bucket, paper towels, cleaning products
1 - New pop up assembly
2 - New U P-trap
3 - Tail piece
4 - Teflon Tape
5 - Plumbing Putty
6 - Thread Sealant
The Sizes Drain Pipes:
Although most sink pop up assembly have 1 ¼” in diameter, most drain piping behind the wall usually measure 1 ½” in diameter, which this means is that, if that is your case, you will have to make a transition right in the tail piece or just before connecting in the wall.
If you want to make easy on yourself just make the change in size in the tail piece, in fact, you don’t have to do anything at all, just buy a tube p-trap that measures 1 ½” in diameter because the new trap comes with gaskets with two different measurements, 1 ¼’ and 1 ½” so, you won’t have any problems in making the change in size.
Removing Old Plumbing:
Step 1: Cover the floor under the sink with old rags and put a bucket under the p-trap, this will protect the floor and will reduce the amount of cleaning in the end of the project.
Step 2: With a pair of channel locks remove the p-trap from beneath of the sink and remove the rod from the back of the pop up assembly drain.
Step 3: Remove the pop up assembly by twisting off the drain flange from inside the sink, and remove the entire pop up system.
Step 4: Clean out the sink really well, remove all the old plumbing putty from the bottom of the sink.
Installing The Drain And P-trap:
Step 1: Grad the new flange and place plumber putting around it. Put the new flange assembly into the drain hole. The whole assembly must stay connected.
Step 2: Put the rubber gasket joint, the nut and washer through the short tail piece that is attached with the flange and tighten the washer against the bottom of the drain, until the flange is really tight. Remove the excess of plumber putting, the leftover.
Step 3: Grab the other thread section of the drain, put Teflon tape on the thread and install it directly into the flange, make sure to use a channel lock to tight really well.
Step 4: Time to connect the pop up and rod. Insert the pop up stopper into the drain but don’t let it drop it just yet. Keep holding until next step is also connected.
Step 5: Install the horizontal rod by first putting the plastic gasket and then, the pivot seat in front of the plastic ball, and then insert them into the hole behind the drain under the sink. Make sure that the rod goes through the hole of the stopper, and then tighten the rod nut against the tail piece drain.
Step 6: Install the longer tailpiece in the drain upper section but, first, put Teflon tape around the thread and then, screw the piece until is firmly tightened together.
Step 7: Connect the horizontal rod with the pop up lever, to do this, you need to install the strap and screw and clip between them, once the whole system is connected, you will need to test the pop up.
Step 8: Time to connect the p-trap under the sink and the wall drain hook up.
1 – Do not tight horizontal rod too much otherwise, the pop up will be too hard to move up or down.
2 – Make sure to check the length of the strap between the horizontal rod and the pop up lever, you might need to adjust it several times, until, the pop up stopper is opening closing well enough, this will determine how well the water will drain into the drain.
3 – You might have to cut the tailpiece shorter in order to properly alight the drain p-trap, however, don’t do this until, everything is in place and you know for sure that, such a measure will be required.
4 – Make sure to check for leaks, that’s it.