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Old 08-02-2021, 10:32 PM   #1
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Water filter housing is leaking

I have a 2021 Rockwood A122S pop-uo. The unit did not come with a water filter. I camped several times without a water filter, and the pump worked fine without a leak.

I unscrewed the housing for the first time (it was very tight) and put in my filter. I screwed it back in. Whenever I turn on the water pump, water now shoots out of the lowest thread of the housing, as if it is not tight enough (I hand tightened it sufficiently). I have tried loosening and re-tightening several times to no avail. The thread appears intact and the o-ring on the housing is still there. Am I missing another o-ring on the base of the threads? Or am I doing something wrong? I've pictured the housing in question.
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Old 08-03-2021, 06:18 AM   #2
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I'd say it might be either the filter isn't seated right in the canister or it's the wrong filter.

Here's what I use: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-03-2021, 06:40 AM   #3
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That's a terrible o-ring design.

Look into the head to make sure there's nothing like a small piece of trash in the o-ring area that would keep it from sealing.

Try taking some lube (pool or personal) and lube the top of the canister and the o-ring and then tighten it into the head. You may wind up needing a wrench to get the canister to seal properly.
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Old 08-03-2021, 06:53 AM   #4
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Try reinstalling with out the filter and see if it leaks. If not then the filter maybe the issue. Also id you get a wrench to use on the filer? Later RJD
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Old 08-03-2021, 07:09 AM   #5
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Originally Posted by aceinspp View Post
Try reinstalling with out the filter and see if it leaks. If not then the filter maybe the issue. Also id you get a wrench to use on the filer? Later RJD
I agree with RJD above here. ^^^^^^
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Old 08-03-2021, 07:16 AM   #6
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Any chance it got cracked at the threads when you removed it.
Many of us have bypassed the onboard filter and just use an external filer on the city water hose.
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Old 08-03-2021, 07:31 AM   #7
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I had the same issue. Plumbers grease on the o-ring was the cure.
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Old 08-03-2021, 09:04 AM   #8
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The OP stated: "I camped several times without a water filter, and the pump worked fine without a leak."

Glad I'm not the only one with reading comprehension issues.
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Old 08-03-2021, 10:32 AM   #9
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Originally Posted by OYO View Post
The OP stated: "I camped several times without a water filter, and the pump worked fine without a leak."

Glad I'm not the only one with reading comprehension issues.
Just the act of opening the housing and reclosing it with the same filter caused mine to leak. Plumbers grease fixed it. Not a reading comprehension problem.
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Old 08-03-2021, 10:47 AM   #10
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I'll add one more thing to look for... since you mentioned it was tough to remove, you 'may' have cracked the canister especially since you say the water is spraying out near the bottom thread. Inspect the canister closely. A crack may be hard to see but it could spread when screwed on.
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Old 08-04-2021, 08:09 AM   #11
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I felt the threads on the both the male and female part of the housing and they all feel fine. I wanted to add a filter because I do a lot of boondocking, but now I regret it.
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Old 08-04-2021, 08:09 AM   #12
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I had the same issue. Plumbers grease on the o-ring was the cure.
Thanks, I will try that.
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Old 08-04-2021, 08:23 AM   #13
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I had the same issue. Plumbers grease on the o-ring was the cure.
“Plumber’s grease” is not necessarily what you need. For o-rings, you must use pure silicone grease. Some pure silicone grease may be labeled as “Plumbers grease”, and that would be fine to use, but most “Plumber’s grease” I have come across is not pure silicone. Read the label to make sure you are using pure silicone grease.

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Old 08-04-2021, 08:36 AM   #14
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Originally Posted by nomad297 View Post
“Plumber’s grease” is not necessarily what you need. For o-rings, you must use pure silicone grease. Some pure silicone grease may be labeled as “Plumbers grease”, and that would be fine to use, but most “Plumber’s grease” I have come across is not pure silicone. Read the label to make sure you are using pure silicone grease.

Bruce
Thank you. Side note: doesn’t it look like the housing is missing a big o ring or flat rubber ring at the base of the threads? Lubricant on its own seems like it wouldn’t do the job, but I also am an amateur, so just guessing.
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Old 08-04-2021, 08:41 AM   #15
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Originally Posted by juiceman View Post
Thank you. Side note: doesn’t it look like the housing is missing a big o ring or flat rubber ring at the base of the threads? Lubricant on its own seems like it wouldn’t do the job, but I also am an amateur, so just guessing.
No. That single o-ring is all you need. What can happen when you tighten a vessel sealed at the top with a non-lubricated o-ring is, the dry o-ring will grab at some point. Then, as you continue to twist, the o-ring remains stationary and it can stretch or “bunch-up” making the seal uneven, causing a leak.

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Old 08-04-2021, 08:41 AM   #16
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Originally Posted by juiceman View Post
Thank you. Side note: doesn’t it look like the housing is missing a big o ring or flat rubber ring at the base of the threads? Lubricant on its own seems like it wouldn’t do the job, but I also am an amateur, so just guessing.
No.

The seal (black o-ring) is at the top of the canister above the threads.
If that seals as it should, no liquid would get down to the bottom of the threads unless there is a crack in the canister.
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Old 08-07-2021, 11:41 AM   #17
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What nomad297 said but one additional comment. The synthetic grease I buy is food safe…. Good from -40 degrees F to 400 degrees F and is dielectric.
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Old 08-07-2021, 12:48 PM   #18
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Many of us got tired of dealing with filter leaks in hard to get at locations and simply plumbed the filter out and removed it. Then use an external inline filter for half the cost and none of the hassle.
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Old 08-14-2021, 10:25 AM   #19
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Same thing happened to me when I replaced the filter. Could only find the correct size filter from one company.
It seems that the original replacement I got was 3/8” longer than the OEM that came with my 214HW

Part # F100035511 -- water filter-- 5" Water Pur Company.

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Old 08-14-2021, 11:13 AM   #20
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IF filter housing was overtightened originally, the housing was not cracked upon removal, and the correct replacement filter was installed, then there is also the possibility that the o-ring seal was "flat spotted". Recommend checking the o-ring for full roundness (not referring to the housing diameter). As recommend above, would use a good o-ring lube upon reassembly. Good luck.
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