holding tank replacement

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John

It's finally time to replace the holding tank on my 1991 P42 - from other Foum posts there are many of you that have done this - would appreciate sugestions on - lessons learned, sources for new holding tank, etc. Thanks much!
 
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Bill

Good Luck

We did ours a few years ago back in the middle of winter. Our boat is also a 91 and is on her 3rd holding tank. When we changed ours I upgraded to the 35 gallon from the 26 gallon that was in there. If you are having one custom made there's room for a even bigger holding tank than the 35 gallon. It took about 8 hrs. to do the job. Also the winds were blowing about 50mph and just as I was to start putting the floor boards down the power cord melted. WM had just closed so I had to wait until the morning to get a new cord. Things that you will need I have listed below. 1.Heat gun to put the hoses on to the tank. 2.Pry bar to remove the old foam. 3.Foam to spray in around the new tank. 4.Plastic to put around the new tank before spraying with foam. Helps for when you have to remove the tank new time. I also put plastic between the boat to help in clean up next time. 5.New hose as I r/r mine while I was at it. Good luck and e-mail me if you have an more questions or what it talk about the 42. We liveaboard ours and love it.
 
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Peggie Hall/Head Mistress

For tank source, see my reply to

"Water Tank 1983 H34...", about 5 posts down from yours on the list of daily posts. As for how to do it, read the article "Installing a Head and Holding Tank" and "Replacing Hoses" in the Head Mistress forum reference library (on the forum homepage). It would also be a good idea to read "Holding Tank Odor--Odor Out the Vent."
 
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John

holding tank materials

Peggy, Thanks very much - is the plastic better to go with than the original material (aluminum?)?
 
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Peggie Hall/Head Mistress

Polyethylene is the ONLY material...

that should be used for sewage holding. Urine is so corrosive that it will eat through a weld at a seam or a fitting on any metal tank, typically within 2-5 years...and turn the tank into a collander within 10 years. A thick-walled (at least 3/8") poly tank will last upwards of 20 years.
 
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John

holding tank dimensions

Thanks Peggy - now the trick question - I'm about 1000 miles from my boat, and would like to get the ordering process going. Called Hunter and they don't have (or won't give) dimensions of the tank - does anyone out there have the specs on the P42 holding tank? Otherwise it's another stinky week or two until I get back to measure and order! Thanks.
 
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