Replacing a Dishwasher

Replacing a Dishwasher 3We’ll go through the steps on how to replace a dishwasher. So if you have an old existing one, the first thing you want to do is look at the water supply and in this case we have solid copper and I am just going to change that to a flexible stainless steel supply line. It’s going to make it much easier to move back and forth. And take a look at your discharge pipe and the hose, see how it is connected, in case you need any of the parts at the hardware store.

The first thing we are going to do is remove the bottom panel of your old dishwasher and we are going to test it with a tester, just to make sure we have the electric off. I like these non contact testers because you don’t have to open the box and take a chance in touching live wires. So we’ll go down, we’ll turn off the breaker, we’ll find which one operates that and then we’ll go to the next step.

I found the breaker that operates the electric for this and I doubled checked it, there’s no electric on, so I removed the cover to the box on the old dishwasher and it exposes the hot, the black wire and the neutral wire. We are using flexible metal conduit, which is grounded, and highly recommended by the expert appliance guys at

So you’re either going to have no ground, if you are using BX like this and it goes all the way back to the service panel and it is grounded or you will have ground wire that’s going to be tied to this metal box. Inside, what I am going to do, there is a nut that holds this strain relief and that flexible metal conduit to this electrical box. So I am just using a regular screwdriver and I am going to hit that nut and unscrew this.

Replacing a Dishwasher 2This will pull our electric away and I am going to use a small pan, put it inside here and using a small adjustable wrench, I shut off the water going to the dishwasher, then I am going to loosen the nut on that supply. So I disconnected the water supply and now I am going to disconnect the hose. Under the dishwasher, I just raised these feet a little bit, if you have a different height in your tile or wood, it’s nice to pull this up a little bit because the next step we’re going to loosen the screws or any brackets that hold the top of the dishwasher in place.

So now on this one, it just has two screws, so we’ll just unscrew them and that will allow us to bring the whole unit out. Once you have the top bracket or screws loose, you can just pull the whole unit out. I have the new supply line connected and I connected it to the valve. What you are going to want to do is take a bucket, open that valve and bleed out in case there is any debris or anything built up and let that run for a few seconds, until it runs clear, shut it back off and then you will be able to connect this to the new dishwasher.

The next thing we want to do is connect the discharge hose to either a garbage disposal, if you have one, or we are connecting it this time to a slip joint with a hose barrel by it. So we are going to connect it to this and then we are going to use a clamp to clamp it in place and make sure you are read your instructions. Different models are different, this one wants to be about 20 inches high with this loop.

So we have a cold cut into the top of the cabinet, which will set it at the correct height. Now that we have the new dishwasher, we pull off the bottom panel, so it exposes everything to us and now they have a chart for the back legs. Before we slide this into the opening, we are going to measure the distance between the floor and the bottom of the counter top and we are going to adjust this.

There’re going to have a few different settings for the back legs. We want to set that first because when we slide it in, we are going to level it by adjusting the front legs. Every dishwasher is going to be a little bit different. This one has a bracket that we are going to insert into a little slot here and then we are going to use a pair of pliers and we are going to bend these tabs up and we are going to lock it in place. This is going to allow us to screw it up into the bottom of the counter top.

This was getting a bit long for a single post, so we’ll continue on with more here in the second half… here.