Bathroom sink facuet dripping (hot water side), cartridge replacement?

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Old 05-26-17, 02:02 PM
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Bathroom sink facuet dripping (hot water side), cartridge replacement?

So my bathroom sink faucet is dripping (hot water side). researched and found cartridge might need replacement. I removed the handle and saw the cartridge and seemingly a retaining nut. However, unlike most of the youtube videos showned, that metal piece holding the plastic cartridge is mostly round with a very shallow hex on the top. Essentially my wrench can only grab on the round area mostly, which seems to be strange design if that's supposed to be a removable part.

I tried to turn it but instead of the metal nut loosen, the whole base plate went loose and started to turn, and I can feel it was dragging the water lines down below so I stopped and came here to ask if that's the right way to remove the cartridge.

I attached a pix with some captions for your reference.Thanks a lot.

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Last edited by PJmax; 05-26-17 at 04:35 PM. Reason: pic
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Old 05-26-17, 02:45 PM
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The hex will turn independently of the round part. You probably need to put a pair of pliers on the round part and try loosening the hex with a better wrench, possibly closed end if possible. Don't forget to turn the water off at the stops
 
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Old 05-26-17, 03:17 PM
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You might need a helper to hold the valve body from below.
You can also retighten the body from below.
I've ran into this before, here's a typical Moen widespread faucet, others are similar:

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Old 05-26-17, 04:03 PM
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@chandler, are u sure that the hex part should turn independently? The hex part is only 3-4 mm tall, that I don't see any common wrench to be able to grab on for that much space...
 
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Old 05-26-17, 05:06 PM
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Any deep well socket that fits that size fitting will work.
There is no need for pliers or channel locks!
That bottom fitting will only turn so far and stop.
A simple tap on the ratchet will work better than trying to twist it by hand.
 
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