Forum Discussion

wallaceb's avatar
wallaceb
Explorer
Sep 06, 2014

A question for AF 1140 owners

I need some insight from fellow AF 1140 or TC owners. I have a situation where when I am hocked to shore water somehow my fresh water tank continues to fill slowly. This is the first time in the three years of operation this has happened to my knowledge. I am not sure why this is happening. My pump is not on when it occurs. Anybody have advice on this??? Thanks in advance.
Truck Campers

6 Replies

  • KD4UPL's avatar
    KD4UPL
    Explorer II
    Sep 07, 2014
    I had the check valve leaking in my ShurFlo pump. Every 1/2 hour or so it would run for about a 1/2 second. I purchased a rebuild kit for very little money and replaced the valve. Problem solved. There's no need to replace the entire pump.
  • n7bsn's avatar
    n7bsn
    Explorer
    Sep 06, 2014
    Typically Northwoods puts a ShurFlo pump in, maybe a 4008 if it's a recent unit
  • wnjj's avatar
    wnjj
    Explorer II
    Sep 06, 2014
    wallaceb wrote:
    Thanks KF4UPL and WCjeep. you've confirmed my suspicions. When I am dry camping (only on on board water)every 15 or 20 minutes the pump will "creep". That clue indicates a bad check valve. I wasn't sure but that is the only thing that makes sense. So new question becomes should I just cut a second check valve into the line or replace the pump?


    If it's a diaphragm pump, trying taking it apart first. It's only 6 screws on mine. There may just be a piece of plastic stuck in it. If nothing else, work the rubber pucks a bit, turn them and see if it's any better. You've got nothing to lose.
  • wallaceb's avatar
    wallaceb
    Explorer
    Sep 06, 2014
    Thanks KF4UPL and WCjeep. you've confirmed my suspicions. When I am dry camping (only on on board water)every 15 or 20 minutes the pump will "creep". That clue indicates a bad check valve. I wasn't sure but that is the only thing that makes sense. So new question becomes should I just cut a second check valve into the line or replace the pump?
  • wcjeep's avatar
    wcjeep
    Explorer
    Sep 06, 2014
    Do you have the valve before the pump normally used for water RV antifreeze? Place the line set aside for antifreeze into a potable bottle. Flip water valve to test water pump check valve.
  • KD4UPL's avatar
    KD4UPL
    Explorer II
    Sep 06, 2014
    I don't own one but I'd guess the check valve is leaking in your pump.

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