I recently replaced the jabsco toilet's pumping assembly on my Cat 30. Before closing the boat up after a sail, I close the seacock, and make sure the switch on the pump is showing dry pumping and that any water in the bowl has been pumped out. A few days later when I return to the boat I find that the water level in the bowl is close to the top. I'm sure I am doing something that is allowing this water to back up into the bowl. The holding tank I'm almost positive is not full to capacity. Any ideas? Thanks, Steven
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I need more info
Are you 100% certain that it's the head intake seacock you're closing, and not another one? (Sorry...but I have to ask!) Is the water in the bowl clean or dirty? You're ALMOST positive the tank isn't full..make sure. And while you're checking that, also make the sure the tank vent isn't clogged...'cuz if it is, your tank may be pressurized...pushing flush water back toward the toilet. And with a new pump that has a new joker valve in it, any water in the head discharge hose would seep through the joker valve slowly. You can find out very easily...just open the pumpout cap...very carefully, and with a hose handy...'cuz if your tank is pressurized, it'll spew. Check it after you've been aboard awhile and used the head a few times, not when you first come aboard...'cuz if that is the problem, any pressure is likely to be relieved while the boat sits.
Are you 100% certain that it's the head intake seacock you're closing, and not another one? (Sorry...but I have to ask!) Is the water in the bowl clean or dirty? You're ALMOST positive the tank isn't full..make sure. And while you're checking that, also make the sure the tank vent isn't clogged...'cuz if it is, your tank may be pressurized...pushing flush water back toward the toilet. And with a new pump that has a new joker valve in it, any water in the head discharge hose would seep through the joker valve slowly. You can find out very easily...just open the pumpout cap...very carefully, and with a hose handy...'cuz if your tank is pressurized, it'll spew. Check it after you've been aboard awhile and used the head a few times, not when you first come aboard...'cuz if that is the problem, any pressure is likely to be relieved while the boat sits.
Thank you all for your input.
Peggy, Thanks so much for your input. I will follow your advice and see what I find. Steven
Peggy, Thanks so much for your input. I will follow your advice and see what I find. Steven
C30 Specific cause
Another possibility (but a long shot) is the fact that on the Catalina 30's (at least older ones) the sink drain in the head runs to a "T" and backflows through the same through hull as the head intake. Any use of the sink (with the through hull closed) could potentially drain into the toilet. When known, it comes in handy to flush the head intake line (it can be the source of odor when left for a long time with stale seawater). Another reason to know your personal boat systems intamately. Good luck!
Another possibility (but a long shot) is the fact that on the Catalina 30's (at least older ones) the sink drain in the head runs to a "T" and backflows through the same through hull as the head intake. Any use of the sink (with the through hull closed) could potentially drain into the toilet. When known, it comes in handy to flush the head intake line (it can be the source of odor when left for a long time with stale seawater). Another reason to know your personal boat systems intamately. Good luck!
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