We’re here to help you out with this DIY. You do not need any unique experience or expensive tools to complete this task, so it is worth doing if you have time and the will. And here is what you will need: a screwdriver, a wrench (or spanner), and a little patience. Let’s get started!
The function of your faucet depends on its position in the sink basin. However, the only two models commonly available are the single-hole and three-hole models.
Here’s how to take it apart:

Step 1: Turn Off the Water

First, you need to turn off the water flow. Some faucets have a simple three-way valve under the handle. However, the majority will have a plate or a screw-on top of a “Cartridge” (a small plastic container with a round sponge inside it). This cartridge will be installed directly on your sink basin and hold the sponges, with their respective handles still attached.
To remove this cartridge, you must insert your finger between it and the sink basin to separate them. Once they are separated, you can unscrew them with your hand or use the appropriate tool.
Once the cartridge is unscrewed, you will be able to see the sponges (or cartridges if they are not filled). They will be held by a clip on one side of the sink basin. Remove this small clip and remove your new part. Be careful, as there may still be some water left in them that you don’t want to spill around.

Step 2: Lift the Lever

Once you have removed the cartridge, pull out the lever. It is usually done by pressing on the tab located on its side and then pulling it out.
If this approach does not work at first, there could be a second lever under this one. So you will need to press on that one instead.
Finally, if there is a third one at the end of the faucet handle, that will be pulled by hand to pour water from it.

Step 3: Remove Screw

In this step, you will need to take out the Screw from the mounting plate. To do this, insert a screwdriver in the opening and turn to remove it.
Then, remove the plate and check if your faucet has this additional part on the other side. If so, unscrew it too.

Unscrew the Handle

The last step is to unscrew the handle. Please do so by turning on its back, on the opposite side of where you insert your fingers while using it. You will see that two screws still need to be removed, and then you can obliterate the handle.

Step 4: Take Out the Wand

You can now take out the wand by turning it counterclockwise. Once you have turned it enough for it to come loose, pull it out. If the handle has a handle, you will need to remove it too.
There are two ways to do this. If you have a screwdriver, insert it in the hole opposite of where the handle is connected. Then, pry outwards to remove both parts simultaneously.
If you don’t have a screwdriver handy, then try prying on the other end of the faucet pipe that leads into your sink basin.

Dismantle and Remove the Phalange

Now that you have taken the parts out of the way, it’s time to disassemble the faucet from its base. First of all, unscrew the plate from your sink basin with a wrench. This plate usually has a hole in its center and screws up and down on this hole, making sure that the faucet is attached solidly.
Once this plate is removed, you can take off the rest of your parts with your screwdriver or your bare hands, respectively.

Removing the Nut

You will now need to use a wrench or a spanner to remove the nut from your faucet. It’s located on the other side of your sink basin, and it connects the mounting plate with the tub. You will probably have a third option if this doesn’t work: unscrewing it with your bare hands.
It is different from a regular nut in that its thread is located outside the faucet.

Removing the Tub

The following two steps will be a little tricky but not impossible. First of all, you need to separate your faucet from its body, which means taking out the tub from its metal sleeve. To do this, you must insert a wrench or a spanner in the hole in the middle of your faucet and turn it to the left. It will disconnect it from your sink basin and give you access to your tub’s sleeve.

Step 5: Take Out the Cartridge

You will now need to take out the cartridge from the tub. It will be located where the tub meets the sleeve, and pulling it ought to detach it.
Now, if you’re lucky enough to have what’s called a “plunger” in your faucet, then look for its handle. If you can’t find it, unscrew what you need to take out this cartridge, but be careful! This process may still release some water.

Step 6: Take Out the Wrench

The last step is to take out the securing mechanism. It is the one that connects the mounting plate to the tub, so you need to take it apart with a wrench. You can also unscrew it with your hands if your wrench does not let you take it apart easily.

Putting Your Grohe Faucet Back Together

1. Replace the Nut

Now that you have taken everything out of the way, it’s time to put it back together. First of all, put a new nut on your faucet mounting plate. To do this, insert your wrench in the central hole on its side and tighten it until you hear a click. It is how it works with most nuts, although some require you to do this by hand.
Once your nut is tightened, you can now screw up its sleeve into your sink basin.

2.  Insert The Phalange

Next, you need to insert the cartridge into your tub. To do this, you should stick it as far as you can go and then pull it out as if to pour water. It will make a “click” sound when this operation is complete. You will also notice that its handle is now sticking up and ready to be installed.


3. Replace the Lever

Your next step is to replace the lever. To do this, you should put it in the hole and push it down until it’s secure. At the same time, you will need to press down on its previous location to insert the clip.

4. Turn Your Water Back On

Once your lever is in place, you can now turn your water back on. You should do this either from a separate shut-off valve or from the one in your sink basin if there is one. Make sure to check for leaks! Otherwise, it would be best if you repaired them right away.

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Conclusion 

The whole process of disassembling your faucet can be done in under an hour. It’s not complicated, but when you want to put it back together, you might have some problems at first. However, in most cases, if you have trouble doing it, some videos on the internet usually show people how to do it just fine. So follow them blindly if they don’t work for you.