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Cutting Holding tank access hole

Discussion in 'Technical Discussion' started by Danvilletim, May 18, 2017.

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  1. Norseman

    Norseman Senior Member

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    The Jabsco Motor/pump is about 2.5-3 years old, if that.
    Replaced just before I bought the tub 2 years ago.
    No visible corrosion, wiring and power good.
    Probably an impeller problem, lack of use: Guesstimating 3 minutes each pump, 10 pumps per year. Rotten impeller and internal corrosion, maybe.
    No point in buying the cheapest macerator pump on the market, same problem over and over again.
    Been replacing and even overhauling these $110 Jabsco pumps on client’s boats, not my fondest memories.
    Would rather pay twice the price on my own boat for something that will last longer and work better.
    Hopefully this Raritan will do just that.
  2. chesapeake46

    chesapeake46 Senior Member

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    Ha, did you " gift " him the fish tape ?
  3. Pascal

    Pascal Senior Member

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    If the raritan fails bite the bullet and put a sea land. Yes you ll have to replace the hose and discharge TH

    Personally I don’t like under water TH for black water discharge. No need for it. Above the WL is fine and easy to install while in water.

    And before anyone says “yuck”, since you re only allowed to discharge 3 miles offshore, wave action will rinse the hull side just fine The fewer The holes the better ...
  4. Capt Fred

    Capt Fred Senior Member

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    The deck to holding tank hose could be collapsing under the suction. Have you investigated that area?
  5. Norseman

    Norseman Senior Member

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    Took a quick peak in there, but did not really investigate.
    I doubt this little impeller can create enough suction to collapse a proper sanitary hose, but I will take a closer look.
  6. Pascal

    Pascal Senior Member

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    These jabsco pumps are usually installed close to the tank, I doubt someone used a collapsible hose for that short run. The tank to deck fill hose is completely irrelevant in this case
  7. Norseman

    Norseman Senior Member

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    True.
    Will do a Pump-Out Cruise tomorrow Friday to suck everything dry, rinse, repeat then some with liquid soap and more water and suction before I start tearing into the system replacing pumps and hoses.
    Looking for friends and/or volunteers to help, We are all good buddies, stop by for a few minutes of manual labor doing hoses and hoses clamps with your face 6” from the affected area. I will of course supervise and the Coors Light is on me. Thx Guys. :cool:
  8. Capt Ralph

    Capt Ralph Senior Member

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    If your using that PVC hose, don't forget the hot air gun to soften the hose.
    Also, vinegar helps clear the odors quicker.
  9. Norseman

    Norseman Senior Member

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    Yup, will do, thx
  10. Norseman

    Norseman Senior Member

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    Almost ready for installation of new pump and new plumping.
    The surgery is being done through a small opening: Picture.
    Took me 2 hours to get the old pump and hoses out and disconnected, laying flat on the belly with a flashlight strapped to the noggin and sweating like a 220 lbs pig. :(
    Installation should be easier, 1/2 hour max..:rolleyes:

    3A5EB02F-8CF3-41BB-9426-A70D3F0DFEB4.jpeg
    Something to be said for bigger boats and more space..
  11. Capt Ralph

    Capt Ralph Senior Member

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    Looks just like a Jabsco pump to me.
  12. Norseman

    Norseman Senior Member

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    They all look the same to me..
  13. Norseman

    Norseman Senior Member

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    Just now realized I highjacked this thread.
    My bad, Mea Culpa.
    Should have started a brand new poo-poo-pump thread.
    Next time.
  14. Pascal

    Pascal Senior Member

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    This is why I always say the bigger boats are easier to maintain!!
  15. Norseman

    Norseman Senior Member

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    Rub it in Bro..:cool:
  16. Beau

    Beau Senior Member

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    Missing a double clamp on the inlet? There is also a soloution that uses bacteria to target the waste in the hoses. I think its a Raritan product? CO something....
  17. Norseman

    Norseman Senior Member

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    I knew some eagle eye would see the single clamp..
    That particular barb did not have enough real estate for a double SS clamp.
    I tried and measured, but forcing 2 clamps on a shortie could do more harm than good.
    Will look into the Raritan product you talk of...this one?
    https://raritaneng.com/raritan-product-line/waste-treatment/c-h-cleans-hoses/
  18. Beau

    Beau Senior Member

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    Yes I believe that's it. Let us know if it works as advertised if you use it ? My rairatian macerator has a rubber "nipple" on one end that you can slot a screw driver if it binds. I load mine with grease. Dunno if it helps....

    Single clamp was only an observation on a hose that does not lead from below the water line - so I think that was me being me?
    Last edited: Oct 6, 2019
  19. Norseman

    Norseman Senior Member

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    Not sure I need it.
    You get calcium buildup in the hoses if not pumping enough. On my tub I counted 18 strokes minimum on the handle to empty the discharge hose.
    Instructed guests and crew to do minimum 18, but bonus for 25 pumps.
    (Learned that the hard way on previous boat. Calcium clogged up the hose and caused the famous exploding head..:()
  20. Pascal

    Pascal Senior Member

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    At least he used the good stuff. Solid band.

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