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Old 03-15-2019, 03:38 AM   #5
Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 1,096
THOR #6411
Originally Posted by Tampa.bankie View Post
I have a 2017 Hurricane 34J which has a problem with the fresh tank overflowing when hooked up to city water. A service tech told me that it was the backflow preventer in the pump that was bad and to replace it. I did this and it seemed to work at home when hooked up. I do have a pressure regulator set at 45 psi. When we went camping last week immediately the tank overflowed. I added an external check valve after the pump but the pump will not shut off.
Anyone else have this problem or how to resolve this?
The external check valve goes between the tank and the pump; not after the pump or the pump will run continually. The pump has two adjustments one for pressure relief and another for max pressure. These adjustments are separate from the anti-back flow valve. You don't have to replace the entire pump if the motor is still turning, only the pressure head.
Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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