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Old 01-07-2022, 01:52 AM   #1
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Brand: Thor Motor Coach
State: Maryland
Posts: 2
THOR #25708
Where is the water tank pump on a Thor Majectic 23A?

I have a 2015 Thor Majestic 23A and when I hook up the city water, I get overflow in the inside water tank. I surmise that the inside tank water pump check valve is dirty/stuck/broken. But I need to know where it is, and cannot find any diagrams, and looking at the plumbing it isnít obvious.

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Old 01-07-2022, 03:13 AM   #2
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 12,783
THOR #7035
Turn on the pump and open a faucet with shore water disconnected. This will flush the pump's internals and maybe clear the leakage plus you can then follow the sound to find the pump.
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Old 01-07-2022, 03:18 AM   #3
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Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
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THOR #16721
Pull the drawers out under/around the kitchen sink. Your gravity fill is just aft of the entry door. Your water tank is right below that. The pump is usually in that vicinity. Like Ace said... turn on the pump... you'll easily track it down from the noise.
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