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Thread: Toto makes high-pitched noise

  1. #1
    DIY Junior Member FieldHouse's Avatar
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    Default Toto makes high-pitched noise

    We installed a Toto one-piece Ultimate Toilet #MS853113 with the Power Gravity flushing system in 2001. It has worked great until a few weeks ago, when it started making a high-pitched noise after flushing. It sounds like jet engines starting up, but the noise stops after water fills the tank. Any ideas how to fix this one? Thanks!

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    It could be two things.

    1) Make sure the supply shutoff at the wall is open.

    2) If that isn't it, it may need a new assembly cap, they sell for $1.99 at Lowes, and come with instructions on the back of the card.

    Instructions


    Servicing Instructions

    A. Turn off water supply. Flush toilet. Remove refill tube and snap off cover (A)
    B. Remove float by gently squeezing float arms inward. (B)
    C. While holding valve with one hand, twist cap 1/8 turn counter-clockwise and remove. (C)
    D. Lift out center tube. (D)
    E. Use pliers to remove strainer from center tube. (E) Clean strainer and cap by rinsing under running water.
    F. Re-assemble valve by reversing the above procedure. Note: If the main valve is worn out, (look inside cap), cleaning will not suffice, and a Replacement Cap Assembly, Hunter P/N R528 will be required.
    Note: If the fill valve turns on and off by itself, or runs continuously without spilling into the overflow tube, the problem is not the valve. The fill valve is running due to a slow leak in the tank, probably caused by a flapper. Either worn out or misaligned.

    Last edited by Terry; 11-01-2008 at 04:42 PM.

  3. #3
    Licensed Grump GrumpyPlumber's Avatar
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    Quote Originally Posted by FieldHouse
    We installed a Toto one-piece Ultimate Toilet #MS853113 with the Power Gravity flushing system in 2001. It has worked great until a few weeks ago, when it started making a high-pitched noise after flushing. It sounds like jet engines starting up, but the noise stops after water fills the tank. Any ideas how to fix this one? Thanks!

    Sediment buildup in the fill...maybe.
    Try removing the 7/8" compression nut under the tank and allowing it to drain into a small bucket - might help IF the sediment isn't packed.
    "The biggest regrets we have in life are the chances we never took."

  4. #4
    DIY Junior Member FieldHouse's Avatar
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    Thanks! We'll try it and see if it works. I'll report back.

  5. #5
    DIY Junior Member FieldHouse's Avatar
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    Smile Toto sounds like a dream again!

    Finally got a plumber to fix it, since we found out the supply shutoff valve needed to be replaced, too. Got a new angle valve and ballcock. Works great now. Still the best toilet brand around.

  6. #6

    Default Toto toilet noise

    I contacted Toto because my Drake (about 5 yrs. old) is making a loud, chattering noise when it fills. They emailed instructions (same as you have on the site) for cleaning the fill valve. I went through the procedure twice and it made no difference. The supply line actually vibrates during the fill process and makes a lot of racket! They didn't say anything about replacing parts so I'll phone them again.

    I'm disappointed because, up to now, Toto has been the best.

  7. #7
    Retired Defense Industry Engineer jadnashua's Avatar
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    If the shutoff valve at the wall is not a 1/4-turn ball valve, it could just as well be it, and nothing in the toilet. On an older valve, the washer can cause weird noises.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  8. #8
    Plumber Cass's Avatar
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    You may want to try replacing the fill valve. If the new one makes noise then you may have a bad shutoff / angle stop or you may have a bad PRV and high water pressure but I think a new fill valve will cure the problem.

  9. #9

    Default Toto toilet noise

    Thx for all your suggestions. The plumbing store where I bought my two Totos suggested replacing the entire fill valve and said that's common with "older" Totos. In fact, the first question the parts guy asked was "Is your toilet about 5 years old?"

    I bought just a replacement fill valve cap as a first step and will try that today. If that doesn't work, I'll replace the entire fill valve. Calls and an email to Toto yesterday went unanswered ...
    Last edited by mshandywoman; 08-21-2007 at 09:37 AM.

  10. #10
    Forum Admin, Expert Plumber Terry's Avatar
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    The Assembly cap, sold at Lowes for $1.99 fixes the problem.
    It takes about 30 seconds without tools to replace.
    The answer to your problem was already posted above with instructions and pictures.
    I'm sure any handy person can do this in less than a minute.
    I often show customers how to do this on their toilet before I leave the house. Then they can see how easy it is.

    www.terylove.com/hunter.htm
    Last edited by Terry; 08-21-2007 at 10:36 AM.

  11. #11

    Default Toto toilet noise

    Terry -
    Thanks for your note. I did read your posting but decided to ask the plumbing store where I bought the toilet. They suggested buying an entire new valve; I told them about the advice on your web site so I paid $3 for the cap (cheaper than having to drive to my nearest Lowe's) and came home.

    I replaced the cap this evening - in less than a minute - and discovered the orange ring/diaphragm was missing (eaten away?) from my old one. This seems to have solved the problem. No more noise. Hooray!

    BTW, the tech (Raul Dan) I have been dealing with at Toto has been extremely helpful in getting info to me, too.

  12. #12
    DIY Junior Member debcovey's Avatar
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    Talking Thank you!

    Quote Originally Posted by Terry View Post
    It could be two things.

    1) Make sure the supply shutoff at the wall is open.

    2) If that isn't it, it may need a new assembly cap, they sell for $1.99 at Lowes, and come with instructions on the back of the card.

    Instructions


    Servicing Instructions

    A. Turn off water supply. Flush toilet. Remove refill tube and snap off cover (A)
    B. Remove float by gently squeezing float arms inward. (B)
    C. While holding valve with one hand, twist cap 1/8 turn counter-clockwise and remove. (C)
    D. Lift out center tube. (D)
    E. Use pliers to remove strainer from center tube. (E) Clean strainer and cap by rinsing under running water.
    F. Re-assemble valve by reversing the above procedure. Note: If the main valve is worn out, (look inside cap), cleaning will not suffice, and a Replacement Cap Assembly, Hunter P/N R528 will be required.
    Note: If the fill valve turns on and off by itself, or runs continuously without spilling into the overflow tube, the problem is not the valve. The fill valve is running due to a slow leak in the tank, probably caused by a flapper. Either worn out or misaligned.



    I followed service instructions replacing no parts and worked perfectly!! no more noise. thanks so much.

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