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Thread: How to remove Grohe Sinfonia Faucet

  1. #1
    DIY Junior Member atulc's Avatar
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    Default How to remove Grohe Sinfonia Faucet

    I need to replace the cartridge in my Grohe 20.655 Sinfonia two-handle lavatory wideset. This requires removal of the cross handle 1 and cap 5 (see the diagram and parts list). It is straight forward to remove the cross handle. But I can't figure out how to remove the cap.

    Grohe tech support recommended a strap wrench. I've tried, but the strap wrench keeps slipping because of the bell shape of the cap. As a last resort, I'd have to loosen the nut under the sink. But it is very crowded under the sink and I want to avoid this route. Any suggestions on how to unscrew the cap? Thanks.

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  2. #2
    Moderator & Master Plumber hj's Avatar
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    Wrap it with black electrical tape and use a good pair of Channelock pliers. Removing the faucet would not help at all.

  3. #3
    DIY Junior Member atulc's Avatar
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    HJ - thanks, I'll try out the electrical tape and channel lock pliers.

    Sorry, I didn't mean to remove the faucet but just the handle and cap. Thanks for correcting that.

  4. #4
    One who lurks Basement_Lurker's Avatar
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    Man I hate Grohe, heh. That escutcheon should unscrew. Hj's method will certainly give you a good grip, but you have to careful with how much squeezing force you apply. Another way to go is to wear gloves with a special rubber grip coating applied to the underside...that will allow your fingers to get a good grip if you can't get a rubber strap wrench on there.
    Broken promises don't upset me. I just think, why did they believe me? -Jack Handy


    www.blackbirdkitchenandbath.com

  5. #5
    DIY Junior Member atulc's Avatar
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    Finally got the cap off by wrapping it in plenty of electrical tape and using channel lock pliers. I can see now why it was so hard to unscrew - the cartridge and the inside of the cap are heavily corroded. Now to the next challenge - despite removing the cap, I can't get the cartridge out. It's frozen inside the housing due to corrosion. Time to call Grohe for more warranty parts.

    Basement_lurker - agree with your sentiment.

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