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How to Repair a Moen Shower/Tub valve

How to repair a malfunctioning Moen Positemp shower/tub valve. One of the most popular shower valves installed today.
This is a slightly longer version which includes thoughts on doing it yourself or hiring a plumber for this job.
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


  1. Don't you have to dry the whole and lube the new cartridge before inserting?

  2. Thank you so much my first plumbing DIY and my second DIY ever. Thank you for mentioning all the tips and the possible problems. The only video that addressed what to do if u installed the cartridge right but the still there is a problem a simple 180 degree turn and voilà . Thank u

  3. excellent video definitely gives me the confidence to do this project . mine is a moen also but w regular knob handle so a Philips screwdriver should remove knob no Allen key . il see next week .. awesome video

  4. Great instructions, my kids broke mine, and it was easy to follow this instruction and replace. I found tools from my toolbox that did that job, so I know save a couple hundred bucks. Thank you

  5. Thank you for including the info relating to "if the position is opposite of desired……"

  6. This tutorial saved me so much money! Thank you!

  7. This little goodie ☺️

  8. I got a free cartridge. Guy at the hardware store said moen warranties parts so everyone paying for cartridges are getting ripped off

  9. Thanks for the video.
    Question: how to find out which model to buy a new cartridge ?

  10. This was very informational. I have a broken diverter valve I know now thank you.

  11. 😂😂 pause it @ 8:15, then 8:41

  12. Thank you this is great much appreciated

  13. I have been trying to figure out why my hot water is coming out first after replacing the shower knob…thank you for explaining what I need to do to ensure cold water comes out first!!

  14. This was really an awesome posting, you took great time and explaining everything. I appreciate it, and it looks like everyone else here does as well!

  15. This is the same model that I have, does anybody know the model number so I can match replacement parts for it? I'd appreciate it!

  16. One question. Towards the end when you say if the water is not cold when you turn it on, to take the brass stem and turn 180°. It was OFF. You rotated 180° and it still stayed OFF. How was this possible? The main water lines were still ON yet no water came out when you rotated 180°. How? When I say OFF I mean no water is coming out of the faucet.

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