Moen hydrolock - how to open it?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jillians, Mar 17, 2010.

  1. jillians

    jillians New Member

    Messages:
    5
    Location:
    Austin, TX
    For the second time in two years, my side spray base has broken off under the countertop. I have the replacement part from Moen. I've noticed the plastic is a different color now, hopefully this one won't break. I'm assuming I need to disconnect the sprayer at the hydrolock in order to replace the base, but I can't find any instructions on how to open a hydrolock. I don't want to break it, but I don't seem to be able to push the tabs through on my own. Is there a trick to opening it? Any advice on how to keep the base from snapping off again? I swear I am not mistreating this sprayer...

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    Last edited by a moderator: Nov 2, 2013
  2. krow

    krow Plumber

    Messages:
    906
    Location:
    Ontario, Canada
    Squeeze the 2 prongs from the backside while pulling gently on the hose
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,837
    Location:
    Cave Creek, Arizona
    Remove the spray head from the hose and drop the hose through the base. Usually the only thing holding the spray head on is a "C" snap clip.
  4. jillians

    jillians New Member

    Messages:
    5
    Location:
    Austin, TX
    Actually the hydrolock is easy to open once you know how to do it. Sadly I couldn't find that info *anywhere* on Moen's website. Problem solved, took about 10 minutes.

    Follow up question: I used the wider side of the undercounter base. The one for thicker countertops. I could've used the longer side because of the size of the hole. This would've put my threaded connection partially through the countertop, and that's how it was previously installed. I'm wondering if that contributed to the breakage in some way, or does it really not matter as long as I have a firm connection between the spray base and the countertop?
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,837
    Location:
    Cave Creek, Arizona
    It probably does not matter. I question how it could have broken in the first place, since once it is tightened to the countertop, there should be no possible way to stress it.
  6. jillians

    jillians New Member

    Messages:
    5
    Location:
    Austin, TX
    I wondered that myself. All I can say is, twice in two years... I don't have kids who might be abusing it. I rarely even use it. Maybe overtightened? Too much torque? I just hand tightened it, which seems to be fine. It was a gray plastic threaded stem. This time the replacement has a white plastic stem, hopefully it's stronger.
    For some reason, this first picture wants to be huge...
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  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,837
    Location:
    Cave Creek, Arizona
    That was my point. Once it is tightened into the countertop, it is almost impossible to abuse it because there is no way to apply any leverage which could break it. And the only way it could break if it was tightened too much, would be if the countertop itself was "expanding" creating massive stress which would pull it apart. If that is the case, then even hand tight may be too much and it will crack again.
  8. jillians

    jillians New Member

    Messages:
    5
    Location:
    Austin, TX
    It's kind of a strange break pattern, which is why I posted the pictures. Unless you just squeezed the tube portion of the base with enough force to crack the stem. It's a granite slab countertop. Even if it could expand (seems unlikely, but I'm no expert), to break two in two years... I'd expect to have trouble with the other parts of the faucet. I'm thinking there was an inherent flaw in the plastic. Maybe the grey plastic stem looked more like metal but was weak or flawed.

    So this is not a common occurance with Moen side sprayers? I wonder...
  9. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,837
    Location:
    Cave Creek, Arizona
    It is not only uncommon, but I have never been able to break one off, and always have to unscrew them. The granite may not expand, but if it has plywood under it, that could if it got wet. The other parts of the faucet are metal so they should not have any problem.
  10. jillians

    jillians New Member

    Messages:
    5
    Location:
    Austin, TX
    No plywood. Good point about the other sink parts being metal. I guess time will tell if the white one lasts...
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