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Old 07-13-2010
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Ajf10—

It sounds like your head is in need of rebuild, since it should pump water through and the joker valve shouldn't be leaking normally.

Instead of rebuilding it, especially if it is an older Jabsco head, I would recommend buying a Raritan PHC or PHII LBA assembly and swapping it out. The LBA assembly is the entire head basically sans bowl. You would mount your existing bowl on the LBA and it effectively becomes a brand new Raritan PHC or PHII head, which is recommended as the most reliable and cost-effective head under $500 by Peggie Hall.

There should be a vented loop between the head and the holding tank that is higher than the holding tank's top while heeled normally. This will prevent the holding tank from siphoning back into the head. This is a step usually skipped by most boat manufacturers.
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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Last edited by sailingdog; 07-13-2010 at 04:36 PM.
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