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Thread: RainSoft AQ40T o-ring replacement (to start)

  1. #1
    DIY Junior Member mjdamore's Avatar
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    Default RainSoft AQ40T o-ring replacement (to start)

    Finally I MUST fix water softener. Symptoms lead to advice to replace 5 o-rings. Only have owners manual but no diagrams, etc. Where are the o-rings in such a unit? With a diagram, I know I can fix it.

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    In the Trades Akpsdvan's Avatar
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    Photo of the unit in question?

  3. #3
    DIY Junior Member mjdamore's Avatar
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    Default Pictures of AQ40T Rainsoft

    Are these pictures OK?
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    DIY Junior Member mjdamore's Avatar
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    The tanks on the left are the charcoal filter tanks so they are irrelevant except I need to replace the charcoal.

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    In the Trades Akpsdvan's Avatar
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    But the valve for your softener is of an older style that I am not sure if there are still parts for it..

    While they may not have the o rings they still might be found at a place like True Valve hardware store. I found o rings to repair a bypass valve..

    I do have a manual on that ,, but it is hard copy and not a pdf file...

    There is one piston with what is listed as 3 O rings, that is under the two white wheels, then there is the two flappers that are just to the right of that piston.
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    DIY Junior Member mjdamore's Avatar
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    Thanks a lot - this is the 1st parts diagram I've ever seen for this unit. This looks very close to what I have. If this doesn't work, then I'll replace the control unit.

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    In the Trades Akpsdvan's Avatar
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    The valve stayed the same while the control changed.

    The scann is from a book that I got my hands on some 15 years ago while I was working for a company that is now out of business but had me start my own years ago.

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