Help Needed and Quick!!!

Discussion in 'Tech/Mech General' started by pelliott1954, Feb 23, 2011.

  1. pelliott1954

    pelliott1954 Read Only Funster

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    Hi All,

    Was supposed to be going away for the first time this year tomorrow, went to fill the water tanks, which filled ok but can't get any water from the taps, just spluttering!!!!

    The MH is a Autotrail 635SE Cheyenne, 2007 and only done 5k so not had much use.

    I am a newbie and have only used the MH once before last November so not too good at troubleshooting.

    I have checked the strainer on the pump, that is clean, I have the dump valve in the system laying flat and closed.

    As soon as I swich the pump on at the switch over thr door it starts pumping even when tap is closed, I would expect that to happen for a very short time only whilst it pressurises the system, but, nothing happens and the pump keeps running which is a bit worrying as it seems to be dry.

    When I first took the strainer bowl off it had water in it, then I decided to have another look to make sure I had seated it right and it wasn't sucking air I found it bone dry, so to me no water is getting as far as the pump!!!

    I phoned Brownhills and they asked me to check the outlet pipe from the dumpvalve to see if that was sucking air in, as if the valve was stuck open but it wasn't, then they got me to unscrew the strainer again, with the pump on and a tap open and put my palm over the hole where the strainer goes to see if there was suction, there was some but not much and definitely no water!!!

    Tomorrows break is looking unlikely, can anyone offer any advice, Brownhills are no saying it sounds as if the pump diaphrams are possibly gone or blocked with something.

    If anyone fancies giving me a call I can add my phone number

    Regards Paul
     
  2. Geo

    Geo Trader - Funster

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    crude but effective
    Try sucking on an open tap to assist the pump
    once air is out thye system all may be well enough
    Geo
     
  3. Dodgey

    Dodgey Funster

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    Water heater.


    The water heater needds to fill up before the system will presurise, ie the pump will run and yes spluttering from any open tap will occure until water heater is full.
     
  4. Geo

    Geo Trader - Funster

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    Alternatively blow into filler to try and pressurise the system
    Geo
     
  5. Geo

    Geo Trader - Funster

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    make sure heater tank drain is shut
     
  6. rainbow chasers

    rainbow chasers Read Only Funster

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    It could be a damaged pump - have you tried giving it a hand in case an air lock is causing the problem? Usually a suck on the shower hose (take the head off! ) usually helps.

    I would check the pipes for splits as well, just in case one has popped. Make sure all you drains/valves are shut ...not forgetting the outside main boilier drain and the little garvity one right in the top corner.

    If all else fails, then a new pump can be fitted in half an hour with no knowledge of anything technical! Easily done.
     
  7. American Dream

    American Dream Read Only Funster

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    There isn't a vacuum in the Water tank is there? Try with the filler cap off?

    Spluttering suggests initially that the pump is trying to work but air in system or, as Dodgey says, it is filling up the water heater.
     
  8. pelliott1954

    pelliott1954 Read Only Funster

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    Hi Guys, thanks for the replies so far, I have tried sucking and blowing down all taps and shower hose with the pump on and off, I have tried it with the filler cap on and off, I only know of three valves to close, one is the waste water tank, one is the fresh water tank, both on outside offside underneath and tha last is the valve inside near the water heater which allows that to empty, all are closed, don't know of any others???
     
  9. American Dream

    American Dream Read Only Funster

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    Can you draw water to the pump by sucking on the inlet hose when disconnected or does it feel like there's a restriction in the pipe?. The water you found might be residual from last outing.
     
  10. Wildman

    Wildman Read Only Funster

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    if all of the suggestions fail, just take bottled water and sort the problem later.
    To bleed the system correctly start witht the taps nearest to the pump, then move outwards bleed both hot and cold water, no need to put the heater on but both need bleeding. (don't forget the shower, and the WC if its fed from the main tank)
     
  11. pelliott1954

    pelliott1954 Read Only Funster

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    Hi All,
    Thanks again everyone, sadly nothing works, I have it booked in at 8.30 in the morning at Countryside Motorhome Repairs near where I live so may still be able to go.

    I can only think it is a diafhram (how the hell do you spell that word!!!!) inside the pump.

    I will let you know how I get on!!!

    Just off to get a Large Scotch

    Thanks Again, Paul
     
  12. TDH

    TDH Funster

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    We've had a mystery glitch with the water system as well - good luck, and have a good trip (have two scotches!)
     
  13. American Dream

    American Dream Read Only Funster

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    Wishing you all the best and hope you get it sorted.:thumb:
     
  14. pappajohn

    pappajohn Funster Life Member

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    DIAPHRAM there you go...:Laughing:

    sounds like you wont be far wrong with as split diaphram.

    could have frozen as some water nearly always remains in the pump at draindown...good luck...and a new pump is around £75.
     
  15. Brisey

    Brisey Funster Life Member

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    We have to refill and test our water system tomorrow, could well be referring back to this thread.:thumb: Just hope our pump's diaphragm isn't u/s.:RollEyes:
     
  16. Geo

    Geo Trader - Funster

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    Have 3 scotch's make em doubles:thumb:
    You wont care if the pump works or not:Rofl1::Rofl1:
     
  17. scotjimland

    scotjimland Funster Life Member

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    If pump diaphragm damaged, save £££££££££ , buy a replacement/overhaul kit from any good caravan dealer.. If you can turn a screwdriver you can DIY.. :thumb:
     
  18. pappajohn

    pappajohn Funster Life Member

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    Geo, you hit the nail squarely on the head....

    cheap bottle of scotch and tip it in the water tank before winter.
    open the taps and pull it through.

    alcohol does freeze like water and there'll be no nasty Aftertaste to worry about when you recommission in spring....just a slight taste of 'matured' scotch :thumb::Laughing:
     
  19. bobandjanie

    bobandjanie Funster Life Member

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    Hi I would say if its " just spluttering " its air and the pump may be OK.:Smile:

    Make sure all drain valves are shut if you have a truma auto dump valve near the boiler make sure its UP.

    Shut all taps turn pump On and Open one tap at a time, I start at the sink, keep open then shut for 20 seconds then Open again after the pressure has built up again when water is coming out move to the bathroom tap and so on. :Wink: If that works cancel the dealers and have a good weekend. :thumb: Bob.
     
  20. Stewart J

    Stewart J Funster

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    The water heater can take some time to fill so pump can run seemingly forever, I leave all taps open (except shower) in fully hot position which helps heater vent properly. Hope you get it sorted soonest.
     
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