I have a manual Jabsco head with a fresh water thru hull and a connection to the sink drain. I pumped out two weeks ago and ever since I cannot get water to fill the bowl. Check valve is open sink is plugged., yet nada. It will pump to holding tank. Any suggestions
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jabsco
Previuosly when i pumped the toilet to the holding tank and then moved the valve to the wet setting it would pull water in from the tru hull. Now no water comes in from the tru hull, but thanx i'll add water from the sink till I get this sorted out
Do you mean that you have a manual Jabsco head that has the intake plumbed into the sink drain line, which goes to a below the water line throughhull?
By check valve, do you mean the seacock that closes the sink drain line??
If the answer to both questions is yes, then the chances are good that the pump's seals are shot... at least on the intake side. If that is the case, I'd highly recommend replacing the head with a Raritan PHII or PHC, rather than rebuilding the POS that Jabsco makes.
One other question. Did you winterize the head, and if so, did you do so by closing the seacock and pouring antifreeze into the sink and pumping it through the head completely? If you winterized the head by pouring antifreeze into the bowl, you missed the intake side of the head pump and water expanding in there has probably damaged the system. IIRC, Peggie Hall said that there is a floating ball that is used as a seal in the intake side, and that if you didn't winterize it properly, the ball is now jammed into the intake, by the water expanding as it froze.
A couple of possibilities...
It may be only a coincidence that your ability to bring in any flush water happened immediately after pumpout...or it may not be. If your tank vent is blocked, the pump is gonna pull in air from wherever it can (if it can't get any air from anywhere, it can't pull anything out of the tank and can implode the tank)...which could have been the toilet. And if so, could have messed up the flap valve at the top of the pump.
Or the flap valve may have just be ready to fail.
Or the wet/dry cam has failed--a VERY common problem in Jabsco toilets made between about 1997-2007--leaving the pump in the dry mode no matter which way the lever is...jiggling it might help.
Or you may have a blockage in the thru-hull or a kink in the intake line.
Or....Is there actually a check valve in the head intake...or were you referring to the seacock when you said the check valve is open? 'Cuz a check valve could cause your problem.
Dog, if winterizing had anything to do with this problem, he wouldn't have been able to draw in any flush water BEFORE he pumped out...but even if it did, how antifreeze was used wouldn't have anything to with it. And there is no check ball in a manual Jabsco toilet.
It may be only a coincidence that your ability to bring in any flush water happened immediately after pumpout...or it may not be. If your tank vent is blocked, the pump is gonna pull in air from wherever it can (if it can't get any air from anywhere, it can't pull anything out of the tank and can implode the tank)...which could have been the toilet. And if so, could have messed up the flap valve at the top of the pump.
Or the flap valve may have just be ready to fail.
Or the wet/dry cam has failed--a VERY common problem in Jabsco toilets made between about 1997-2007--leaving the pump in the dry mode no matter which way the lever is...jiggling it might help.
Or you may have a blockage in the thru-hull or a kink in the intake line.
Or....Is there actually a check valve in the head intake...or were you referring to the seacock when you said the check valve is open? 'Cuz a check valve could cause your problem.
Dog, if winterizing had anything to do with this problem, he wouldn't have been able to draw in any flush water BEFORE he pumped out...but even if it did, how antifreeze was used wouldn't have anything to with it. And there is no check ball in a manual Jabsco toilet.
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