How to Repair a Moen Shower/Tub valve

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How to repair a malfunctioning Moen Positemp shower/tub valve. This is one of the most popular shower valves installed today.
Step by step instructions on how to save hundreds of dollars on this easy to do repair.
This particular valve did not let any hot water flow. The problem could have been one of many others, limited cold water flow, dripping, or others.
I'll show you how to replace the Moen cartridge - which has the entire inner workings of the valve.
For more information go to http://DIYplumbingAdvice.com

See the companion web page for this project at:
http://diyplumbingadvice.com/faucets/moenpositemp.shtml

Music by Jon Hasz, Ramona Music Center
http://itunes.apple.com/us/artist/jon-hasz/id382796874

Category:

Howto & Style

Tags:

• moen
• posi-temp
• shower
• tub
• valve
• leak
• fix
• repair
• cartridge
• plumbing
• plumber
• DIY
• how-to
• leaky
• faucet
• HD
• Ramona

[jaimango1]

Thanks so much for posting this! We are redoing our bathroom from scratch and I was having a small leak from the new cartridge- this totally gave me the confidence to deal with this problem!

[ramonasplumber]

@jaimango1 make sure you use an OEM Cartridge not for Moen but By Moen. More expensive but dont leak.

[donald1715]

Moan for Moen? LMAO. That's for sure. Reminds me of an old diesel truck I had years ago... it was an Iveco but the guys at the repair shop called them Iwreckos because they were designed so badly, LOL.

I put that Moen valve in a good 12 years or so ago figuring made in the USA? Must be ok... arg. Nice to have internet info now so you can see what repairs are going to be like before you purchase your next valve.

[ramonasplumber]

@donald1715 Good thing you watched video first.....

[ramonasplumber]

@donald1715 I had a SAAB car,  same story.....

[donald1715]

Getting the new cartridge back in required a LOT of sanding to the inside of the brass tube as every time I'd try to work the new cartridge back in, the new rubber panels would simply bind and get stuck and the cartridge would start sliding in past them. This Moen faucet is the worst possible design for anyone with hard water... the WORST. It's all back together now and working but wow... what a struggle. : (

[ramonasplumber]

@donald1715

Actually Moen is not bad at all, compared to some. Ceramic Cartridges are best however, not Moen. sometimes I say Moan...... glad you won.

[donald1715]

Ya, got the puller at HD. It went on fine, and tightened snuggly, but the process of breaking the old cartridge free? It would turn but not come free or come out... I had to pull back as hard as I could and wiggle it slightly and strain as hard as I could and it would come out 1/8" and I'd have to rest... then again and again and finally 30 min later, it came out and the rubber side panels were in pieces. Huge struggle. Thanks to your video tho, I was able to remove it without destroying it, lol

[ramonasplumber]

@donald1715 No not a new valve body, possibly 10 yrs. old? I forget. The video was not staged, it was real time. Your story is not uncommon, yes water is the killer, it contains many un speakable things. I suggest a Body Glove POU Filter for Drinking. I try to keep the videos short as possible, not including all issues, yours included. Did you use the Moen Puller that is built to pull both size Cartridges ? Greg Chick

[donald1715]

Your video helped, but I'm going to guess that you demonstrated on a brand new valve, because even with the puller, it was a colossal struggle getting the old cartridge out for me. Maybe our hard water here reacted badly with the rubber panels on the cartridge? Getting the cartridge out meant pulling the cartridge past the two rubber side panels on the cartridge as they had completely adhered to the inside of the brass tube. They came out in pieces. Getting the new cartridge back in? OMG arg.