Grey Water Tank Access

Discussion in 'Motorhome Chat' started by namwaldog, Jul 13, 2015.

  1. namwaldog

    namwaldog Funster

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    I am trying to clean out my Grey water tank and associated feeds on our 2004 Lunar Roadstar 720. On the bottom of the tank there is what looks like a screw-on hatch cover ( see image) which looks as though it should screw off in order to gain access to the tank. I have tried gentle hand pressure to unscrew this with no success and before I get the big hammer out was wondering if anyone else had had and dealings with this type of fitting?
    Grey tank 3.jpg
     
  2. scotjimland

    scotjimland Funster Life Member

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    it has lugs on the side to facilitate removal.. try hitting with a soft mallet.. it should shift .. eventually

    failing that, can you gain access from above to insert a hose to flush out the tank ?
     
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  3. hilldweller

    hilldweller Funster Life Member

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    Y0u wrecker !

    Some half inch ply, a jigsaw and make a key.

    Or one of those chain wrenches use to remove oil filters. Maybe even a spider oil filter remover.
     
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  4. Mikey RV

    Mikey RV Funster

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    Are you turning it the right way. Not being rude just a suggestion.
     
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  5. Badknee

    Badknee Funster

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    Tchhh, good idea but you take all the fun out of it! :cool:
    If it won't move with the hammer you have .......... Get a bigger hammer!:LOL:
     
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  6. The Wino

    The Wino Funster

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    Before you get the big hammer out think how much you want to clean it against how much hassle it will be if the thread splits when you hit it ......twist or stick
     
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  7. namwaldog

    namwaldog Funster

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    Thanks for the replies. I dont know if it is an age thing or not but when I get under the MH with my face directly underneath the red 'cap' with both hands on the lugs my mind is telling me that I should turn it anti-clockwise as though I am holding a steering wheel when turning left but that just doesn't feel right (or perhaps its the fear of the non liquid contents of the tank going all over my face )
    I think, as Jim suggests, it may be easier to disconnect one of the inlet hoses and the outlet hose and just shove a running hosepipe in for a while.
     
  8. Badknee

    Badknee Funster

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    An oil filter removal tool, chain or strap might do it if it's not too big perhaps or as Brian says make a key. At least it will be at arms length when it comes off. :eek:
     
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  9. Bobby22

    Bobby22 Funster

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    It should turn by hand, i have used this to access the gauge for cleaning. It will move just put a bit of oomph into it.

    It actually looks easier to do than mine, which is recessed.
     
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  10. GWAYGWAY

    GWAYGWAY Funster

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    If you REALLY want to get it off then it is entirely what position you take when undoing it.
    Lie directly under it with you chest below the point and hold the plug with two hand one either side grasp and twist sharply, using a lot of body english, bearing in mind how resistant it was. I can now GUARANTEE it will drop open the moment you twist it.
    The tank probably has a load of greasy smelly slime in it which will stink and very adherent to everything.
    Go on you know it makes sense.
     
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  11. tonyidle

    tonyidle Funster

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    Clockwise is the correct direction - anti-clockwise to tighten!!
     
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  12. Ethle the wondervan

    Ethle the wondervan

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    Eh? Are you sure? It could be the other way round!
     
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  13. tonyidle

    tonyidle Funster

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    On your back looking up at it it's clockwise - just the same as undoing a nut or bolt.
     
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  14. Ethle the wondervan

    Ethle the wondervan

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    Clockwise to tighten, unless it's a left hand fred.
     
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  15. Mr Ed

    Mr Ed Funster

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    Please tell us (in all the glory details) how this goes,we do like a laff.
     
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  16. Ethle the wondervan

    Ethle the wondervan

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    Oi! We've got a serious technackerlogigal problem to solve 'ere!
    Ohhhh! Now I've lost me thread, pffff, thread! Get It?
     
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  17. Mikey RV

    Mikey RV Funster

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    Turn right to make things tight
    Turn left to undo and get covered in poo.
    Good luck. (y)
     
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  18. rosalan

    rosalan Funster

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    With a short length of flexible cord, fastened around the red thingy, turn it ANTI-clockwise. Grit and other road detritus will have entered part of the thread, adding to the resistance you feel. This can easily be overcome by attaching a lever to the cord; a six foot scaffold pole may help. If the whole tank comes away, it will give you so much better access.
     
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  19. bernardfeay

    bernardfeay Funster

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    Sounds like a job you might regret starting. It's grey water after all.
     
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  20. scotjimland

    scotjimland Funster Life Member

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    don't be a wimp man.. hit it with a mallet .. ANTI CLOCKWISE .. that's what the lugs are for.. it's not going to break.. trust me, I'm a doctor :D

    I can also provide CAK tanks contact details.. ;)
     
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