Absolute Newbie wants to fix own Grohe 33 625 shower faucet - good idea? bad idea?

Discussion in 'Shower & bathtub Forum & Blog' started by plumbernotme, Dec 8, 2011.

  1. plumbernotme

    plumbernotme New Member

    Messages:
    4
    Location:
    Massachusetts
    A 14-yr old Grohe 33 625 "Eurowing" shower faucet is leaking (constant dripping). Grohe very kindly sent pretty complete installation and repair instructions, plus the information that the part that needs replacing is the cartridge, part number 46 048. Now the hardest part seems to be just getting started by taking the cover off of the faucet, even now, with the instructions that show me which direction in which to try to remove it. It won't budge.

    I am generally fairly resourceful, but have to ask: Is this a good project for someone who has never done anything with plumbing? Or should I just cave in and spend the cash to have a professional tackle this?

    Your thoughts, please.

    "PlumberNotMe"
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,308
    Location:
    Yakima WA
    This might be a good time to consider upgrading to a anti scald fixture.
  3. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,819
    Location:
    New England
    Couldn't find that model's stuff on their website, so can't determine whether it has anti-scald technology, but I think this was introduced earlier, so it probably does. Since I can't see it, and aren't familiar with that model, can't help in suggesting how to best remove it. I have found that their tech support people are pretty good, and maybe worth a call during business hours would quickly resolve your problem.

    Can you post a picture of the new cartridge? If you look at it, does it have notches in it? If so, then it won't 'unscrew', but needs to be pulled straight out after the retaining mechanism is removed. That could be a nut or screw(s). They are often sealed via o-rings, and those can be quite stiff after that many years (and maybe torn, which is why it is leaking and hard to move). If it isn't already coated with plumber's silicon grease, you may want to buy some before trying to insert the new cartridge...it can make a big difference in how easy it is to seat it properly.
  4. plumbernotme

    plumbernotme New Member

    Messages:
    4
    Location:
    Massachusetts
    41gJs9lAB8L._SL500_AA300_.jpg

    Above is an image of the cartridge from Amazon. or see it here: http://www.amazon.com/Grohe-46-048-000-Cartridge/dp/B000P0BCNY

    Here is a look at the handle, and the cover that should come off:
    faucet diagram.png
    It is on pretty tightly, and so far I have not been able to remove it. Off to a great start!

    The water heater heat setting is kept low enough that scalding isn't an issue.

    Thanks for the quick replies, appreciate your help.

    PlumberNotMe
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,819
    Location:
    New England
    Okay, lift the handle up, look at the base of the handle and you'll probably find a setscrew. Loosen that and the handle should lift off. It might need a little persuasion, but as long as you loosen the screw enough (don't drop it in the shower!), it should come off fairly easily as it engages with plastic there - it's not a metal to metal joint if it's like I've seen on their stuff and from the picture. Then, just remove those two screws, lift out the cartridge, and install the new one.
  6. plumbernotme

    plumbernotme New Member

    Messages:
    4
    Location:
    Massachusetts
    The whole handle rotates, vs. lifting. No set screw, but thanks as I hadn't thought to look for one. But that gave me an idea - it could just be really stuck and needing something to loosen it. I wrapped it in a towel, then poured near-boiling water over the towel and let it heat the fixture for a minute. It loosened it enough to get the cover off. There is a big gob of 14-year old adhesive in there holding it on, that was the problem.

    Thanks for the support!

    PlumberNotMe
  7. plumbernotme

    plumbernotme New Member

    Messages:
    4
    Location:
    Massachusetts
    Wrong part ID'd by Grohe,do you recognize this part?

    Progress, sort of. I ordered the part identified by Grohe (cartridge part # 46-0848, pictured above), and then took the shower apart to make the replacement. Lo and behold, the innards don't look anything like what Grohe told me to buy. Lesson learned, dismantle it, then take the part to the store and buy the replacement.

    I've sent these photos to Grohe, but meanwhile, does anyone recognize this part? DSCN0736 (Medium).jpg
    DSCN0735 (Medium).jpg

    The outside handle looks as is pictured above (diagram).
    Thank you,
    PlumberNotMe
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