91 hunter 30t waste tank layout

Dil

.
Jul 13, 2020
57
Hunter 30T Neptune
hey all, looking for a schematic for 1991 30t have a leaking waste tank behind a wall I know I kinda need to cut the wall open but not sure where to cut it at. Thanks
 

jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,297
CAL 35 Cruiser #21 moored EVERETT WA
I am not sure I would rely on an internet recommendation to cut a bulkhead.

Sure your boat was a factory built boat. One of many... Are you the only owner? The boat is 20 years plus. A Previous Owner might have decided the factory did not know what they were doing and modified the tank. May even be why it is leaking.

First empty the tank, wash the tank and hoses out, then empty the tank again. What ever was in there will come out so make it as little and as sweet smelling as possible.

I would get a flashlight. Remove everything that is loose from the area you will be working. Put it in another area of the boat or on the dock.
Get a helpful friend...
1688396490173.jpeg
Inspect the tank by opening all of the accesses to the tank and see if it comes out without cutting anything.
If you decide cutting is a better choice than unscrewing the furniture, then cut once and enough to remove the tank as well, enough to put the new tank into the space.
I had to cut my bulkhead I tried to leave enough for the bulkhead to maintain it's strength, yet allow me to remove an engine.
1688396876211.jpeg
 
Jun 4, 2004
1,085
Mainship Piliot 34 Punta Gorda
Been may years since I had my 30t. I did replace the waste tank with a custom 22 gallon tank. I had to cut it out but don't remember the details now. Good luck.
 
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Dil

.
Jul 13, 2020
57
Hunter 30T Neptune
thanks guys I know I saw a post somewhere
about this. I had the pump out boat there yesterday but as I remembered last year I had it pumped near the end of the season and nothing much came out. today I intend to switch the discharge switch to overboard pump clean water and see if it still leaks out of the bulkhead wall of so then I must have a bad hose if not well more investigation.
 
Dec 2, 1997
8,871
- - LIttle Rock
today I intend to switch the discharge switch to overboard pump clean water and see if it still leaks out of the bulkhead wall /QUOTE]

If any crack in the tank is above the level of any contents in the tank, that won't prove a thing.
If the tank is metal, it doesn't matter where any leak is, the tank should be replaced 'cuz urine is turning it into a colander and the first leak in any metal tank is only the FIRST leak.

--Peggie
 
Mar 10, 2008
43
Hunter 27_1984 gibraltar MI
Replaced mine two years ago. vent outlet rotted off and some pin holes about 3/4 ways up. there is some good information on the model link on what to use and how to cut.
 
Dec 10, 2003
158
Hunter 30_88-94 Edmonds, WA
There is a file and directions in the Boat Info/downloads section by Roy Mosteller.