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03-05-2020, 09:46 PM
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#1
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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12V water pump
I noticed today that every 20 seconds my water pump would run for a second or two. I thought it must be because I have a faucet that is leaking or the toilet. Not the case. I did see that water was coming out my city hook up. Anyone know why and what I can do to fix it. It’s never happened before. Thanks
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03-05-2020, 10:58 PM
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#2
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,122
THOR #7035
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Are you talking about where you connect the hose to your RV is leaking? If so, that is your problem. There is an integrated check valve there which is supposed to prevent water from back-flowing out that connection when the pump is run. It probably needs to be replaced.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-05-2020, 11:12 PM
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#3
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by 16ACE27
Are you talking about where you connect the hose to your RV is leaking? If so, that is your problem. There is an integrated check valve there which is supposed to prevent water from back-flowing out that connection when the pump is run. It probably needs to be replaced.
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Yes...I think. I am not hooked up to city water so no hose. But that’s where the water is coming from.
Not sure I would know how to replace the check valve. Do you know how? Thanks
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03-05-2020, 11:25 PM
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#4
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,122
THOR #7035
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Should be 3 screws on the outside and a screw-on connector on the inside. Make sue you seal it with butyl tape when you install the new one.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-05-2020, 11:48 PM
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#5
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by 16ACE27
Should be 3 screws on the outside and a screw-on connector on the inside. Make sue you seal it with butyl tape when you install the new one.
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Thanks. I will look tomorrow and see what I can do. The pics really help.
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03-06-2020, 09:52 PM
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#6
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by 16ACE27
Should be 3 screws on the outside and a screw-on connector on the inside. Make sue you seal it with butyl tape when you install the new one.
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I had no clue how many different types they made. I finally found one that looks just like the picture you sent.... well it’s black not white but the one I have is black. Should get it in a few days.
Why do I need the tape you suggested I use? Where does it go? I get the plumbers tape.
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03-06-2020, 11:03 PM
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#7
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Senior Member
Brand: Thor Motor Coach
State: Florida
Posts: 1,241
THOR #1249
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Quote:
Originally Posted by jannnda
I noticed today that every 20 seconds my water pump would run for a second or two. I thought it must be because I have a faucet that is leaking or the toilet. Not the case. I did see that water was coming out my city hook up. Anyone know why and what I can do to fix it. It’s never happened before. Thanks
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Could be you just have a small piece of junk keeping the valve from seating.
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Former owner of 2015 Thor Vegas 24.1 in Ocala
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03-07-2020, 12:08 AM
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#8
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,122
THOR #7035
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Quote:
Originally Posted by jannnda
I had no clue how many different types they made. I finally found one that looks just like the picture you sent.... well it’s black not white but the one I have is black. Should get it in a few days.
Why do I need the tape you suggested I use? Where does it go? I get the plumbers tape.
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Butyl tape is used behind the flat part where it is screwed to the wall to prevent rain from entering the hole. Your local hardware or HomeDepot may have some:
https://www.homedepot.com/p/Gibralta...9415/205945574
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-07-2020, 12:10 AM
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#9
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by 16ACE27
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Thanks for your help.
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03-07-2020, 01:24 AM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 2,672
THOR #11781
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Pop the screen out of the end of the city water hook up and using a pocket screwdriver push in the center of the valve. This may clear a piece of debris and allow the plunger to seat curing the leak.
__________________
Lt Keefer
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings
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03-11-2020, 11:34 PM
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#11
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Junior Member
Brand: Thor Motor Coach
Model: Challenger LX
State: South Carolina
Posts: 28
THOR #12124
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By your statement it may be the city connection has a bad check valve or debris in it not allowing it to seal causing a loss of pressure telling the pump to run. Also the diaphragm in the water pump could have debris or is faulty not allowing the system to hold pressure as well. If you eliminate these scenarios and the pump still comes on intermittently I strongly suggest that you check for leaks along as much of the water system lines as you can possibly see or get to, many times leaks or seeps don’t show up until your floor has rotted.
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03-12-2020, 12:08 AM
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#12
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Junior Member
Brand: Thor Motor Coach
Model: Axis 24.1
State: Missouri
Posts: 9
THOR #17907
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Pump Check Valve
Had the same problem on the last trip. The pump would continue to start and stop (every 30 to 40 seconds or so). Got home and pulled the pump and could not see any problems with diaphragms. I pulled the check valve and found a bunch of grit (looked like fine sand) under the rubber check valve flapper. Thoroughly cleaned and blew out, reinstalled and eliminated the problem. Lessons learned - flush your hose thoroughly before connecting to your rig and use a filter on your hose.
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03-12-2020, 03:24 PM
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#13
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Member
Brand: Thor Motor Coach
Model: ACE 29.2
State: Texas
Posts: 89
THOR #1406
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Go outside and check the outside shower. Ensure all the valves are shut tight.
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03-12-2020, 03:26 PM
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#14
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Member
Brand: Thor Motor Coach
Model: ACE 29.2
State: Texas
Posts: 89
THOR #1406
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Also, if you are using city water, kill the pump. Not needed.
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03-17-2020, 06:16 PM
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#15
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by Lt Keefer
Pop the screen out of the end of the city water hook up and using a pocket screwdriver push in the center of the valve. This may clear a piece of debris and allow the plunger to seat curing the leak.
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That was the problem!! Now I did learn even more than “push in the center of the valve” ...... that is, don’t be looking into the hook up when you push it unless you want a shower. Would have made a great video!! Thanks for your help.
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03-17-2020, 07:02 PM
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#16
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Junior Member
Brand: Thor Motor Coach
Model: Challenger LX
State: South Carolina
Posts: 28
THOR #12124
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Lol . Glad you solved the problem. I think most of us have gotten sprayed!! Lol
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03-17-2020, 07:15 PM
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#17
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by SteveW
Lol . Glad you solved the problem.
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My wife is still laughing!! It was really funny.
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03-17-2020, 08:22 PM
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#18
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,122
THOR #7035
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Quote:
Originally Posted by jannnda
My wife is still laughing!! It was really funny.
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Better fresh water than black water!!
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-20-2020, 03:46 PM
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#19
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,280
THOR #16471
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Blackwater vs. COVID-19
Quote:
Originally Posted by 16ACE27
Better fresh water than black water!!
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Better black water than COVID-19!!
Just had to do that. But your comment got me thinking and not to hijack this thread, as I think it was successfully solved, but which would you rather have... A face full of RV black water or a confirmed COVID-19 sneeze?
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03-20-2020, 04:08 PM
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#20
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Senior Member
Model: 3719 Newmar
State: Arkansas
Posts: 656
THOR #14120
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Quote:
Originally Posted by OldWEB
Better black water than COVID-19!!
Just had to do that. But your comment got me thinking and not to hijack this thread, as I think it was successfully solved, but which would you rather have... A face full of RV black water or a confirmed COVID-19 sneeze?
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Can I select neither?
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