(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 9 of 9

Thread: Pesky leak between tank and bowl

  1. #1
    DIY Junior Member jrutledge7's Avatar
    Join Date
    Sep 2011
    Location
    Ohio
    Posts
    3

    Default Pesky leak between tank and bowl

    Bought a Mansfield Waverly two piece HET. There are two tank bolts. I cannot get this thing to stop leaking and wonder if I am tightening too tight?

    Starting from the top of the tank this is the order: bolt head, metal washer, rubber washer, tank bottom, metal washer, nut, toilet bowl, rubber washer, metal washer, wing nut. I tightened the bowl down using alternating turns on the wing nuts until the tank made contact with the bowl.

    There is a consistent drip of 1 tablespoon of water after each flush. I assume it is coming from the tank to bowl gasket. It does not appear to be leaking around the bolts. Are these toilets not supposed to have the tank to bowl gasket completely compressed by tightening the tank to the bowl until the tank contacts the bowl?

  2. #2
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    Location
    San Diego
    Posts
    9,001

    Default

    The matal washer you placed inside the tank is, or will be, the leaker. You have contact between too metal, not so smooth surfaces....the top of the washer and the underside of the bolt head. That joint cannot seal out water. Inside the tank should be the head of the bolt, to rubber washer...that's it.

    But the description that it leaks after a flush points to something on the tank-to-bowl gasket. Maybe disassemble and take a look at everything

  3. #3
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,602

    Default

    quote; this is the order: bolt head, metal washer, rubber washer, tank bottom, metal washer, nut, toilet bowl, rubber washer, metal washer, wing nut.

    You didn't even have to list the order of the parts, because I knew what you had done as soon as I read the description of your problem. Remove the "underlined" metal washer it is the cause of the leak.
    Last edited by hj; 09-24-2011 at 09:00 AM.
    Licensed residential and commercial plumber

  4. #4
    DIYer, not in the trades LLigetfa's Avatar
    Join Date
    Feb 2011
    Location
    NW Ontario, Canada
    Posts
    3,675

    Default

    Quote Originally Posted by hj View Post
    Remove the "underlined" metal washer it is the cause of the leak.
    Why then, would it only leak when flushed?

  5. #5

    Default

    Quote Originally Posted by LLigetfa View Post
    Why then, would it only leak when flushed?
    Wouldn't this mean that the larger doughnut seal is not set right?

  6. #6
    DIY Junior Member jrutledge7's Avatar
    Join Date
    Sep 2011
    Location
    Ohio
    Posts
    3

    Default

    Thanks all - removing the metal washer in the tank makes sense. Not sure why I can associate the leak with a flush. This is the first toilet I have installed. Believe it or not...the toilet tank bolt set came with six washers and clearly states the order of assembly with one on the inside of the tank in the position I have placed it. Teaches me to not trust directions wrote overseas! I'll post back with the results.

  7. #7

    Default

    I would still think you need the metal washer under the bolt head then the rubber washer so the bolt head does not go thru the rubber washer. As you stated in the post above "I assume it is coming from the tank to bowl gasket" This is where it might be coming from if it only happens when you flush. JMO.

  8. #8
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,374

    Default

    A proper tank bolt has a fairly wide, flat head, sized appropriately to not pull though. You might only notice it leaking when you flush because you might move the tank slightly when you push the flush handle, or were leaning against the tank while sitting there. With a metal washer underneath the bolt head, water can leak between the metal surfaces. Without the washer, the rubber one is compressed all around the hole and the bolt head so it can seal.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  9. #9
    DIY Junior Member jrutledge7's Avatar
    Join Date
    Sep 2011
    Location
    Ohio
    Posts
    3

    Default still leaking

    OK...I removed the washer inside the tank. The order was bolt head > rubber washer > tank > rubber washer > metal washer > nut > bowl > rubber washer > metal washer > wing nut. Leaked just as bad.

    I then followed a suggestion in the toilet manufacturer's documents that said to go bolt head > rubber washer > tank > bowl > rubber washer > metal washer > wing nut. The leaks ceased for a few days. Now, it is back as bad as before.

    I have checked the doughnut gasket between the tank and bowl and seems fine. I shine a flashlight in and cannot see any noticable leak between the two, although I see wetness. I do notice a modest amount of extra material on one side of the bolt hole inside the tank. I wonder if that is causing the issue and will contact the manufacturer about it.

    Any other suggestions? There are no apparent cracks or other defects. I know this sounds like a hack fix, but what about using silicone sealant and caulking around the bolt holes and doughnut gasket?

Similar Threads

  1. Cadet tank/bowl bolt leak
    By nymlake in forum Toilet Forum discussions
    Replies: 0
    Last Post: 01-31-2010, 11:07 AM
  2. Pesky Leak that Can't Be Found in Old Tub/Shower
    By pthompso in forum Shower & bathtub Forum & Blog
    Replies: 2
    Last Post: 01-03-2008, 11:35 AM
  3. Toilet leak between tank and bowl
    By ddagsyn in forum Toilet Forum discussions
    Replies: 9
    Last Post: 05-02-2007, 11:17 AM
  4. Toilet leak between tank and bowl
    By ddagsyn in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 9
    Last Post: 05-02-2007, 11:17 AM
  5. tank to bowl leak in new Kohler Wellworth
    By rachelms79 in forum Toilet Forum discussions
    Replies: 1
    Last Post: 07-22-2005, 10:31 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •