Question about Moen Monticello Single-Handle Kitchen Faucet with Cathedral Spout ....
Even Moen faucets can wear out. The first thing you should do is check your warranty. Below is a link to there warranty information.
If the warranty period is over then your going to need to repair it or replace it.
In general, leaks are often caused by a scratched or torn cartridge, o-ring, or grommet. Typically, a cartridge repair kit or replacement o-ring will correct this type of leak so a repair is less costly.
Places like Home Depot, Lowe's or where you originally purchased the faucet should carry a repair ebuild kit. Most times on the back of the package there will be a diagram of the internal parts and how they assemble to help with installation. If not just take you time as you disassemble the faucet. First make sure the water supply has been shut off under the sink. Make sure you have a clean area to place the old pieces for reference. Having something to stack them on in the order they came out will help. Make sure that you check for any small set screws that may be used to lock things in place.
If you do this repair yourself and have any others questions or if you run into problems feel free to ask me for help.
Posted on Sep 08, 2009
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Posted on Jan 02, 2017
1. If it's "leaking" from the body then, the O-Rings between the body of the faucet got gunked up with minerals from your water. This interferes with the seal.
The answer is to take some grit cloth/very fine sandpaper and clean the inside of the spout body. Wipe clean. I would also suggest replacing the O-Rings on the faucet body, but at the very least wipe the O-rings and faucet body clean.
THEN: lubricate the inside of the spout body AND the O-Rings with silicone grease. It's translucent and readily available and the only thing I would ever use for a faucet repair. NOT plumber's grease, NOT WD-40.
Reassemble and enjoy.
2. If it's dripping, the you need a new cartridge. You can get them for FREE from the hardware store if you have the old cartridge to trade them. The problem is that Moen cartridges are water-sealed into place and you need a special tool to break that water seal. The special tool (just a tiny piece of specifically shaped plastic, really) comes, you guessed it - with the new cartridge.
Two possible solutions: a) bite the bullet and just buy the cartridge (~$25) or buy a Moen cartridge puller, usually available from the hardware store as well for about the same price. Ask, they might even lend you one.
The point of whichever tool you end up with is to rotate the cartridge itself inside the faucet body to break the water seal so that you can pull it out with a set of pliers. There will be a retaining clip to pull out as well.
Posted on Sep 09, 2009
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