Fresh water tank problems, rotted floor

thomas g. warner

New member
Mar 24, 1998
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Have now inspected my 1976 Palmbeach and the rot is all the way through to
the foam insulation under the floor in front of the fresh water tank. It
extends to the LP tank cavity and possibly beyond, and under the sub floor
towards the generator, from what looks to be long time leaking of the tank.
How does one replace the floor? How can the foam be removed, to get at the
bottom of the floor?

Anyone got any expertise in this area?????

Also received the new fresh water tank from cinnabar. It is slightly higher
than the old one and not as much room where the hot air duct is supposed to
be routed. In discussions with cinnabar today they say it is the right tank
and something must be wrong with the coach. I tried to explain that my
setup looks the same as that shown in the manuals. Any one else have a
similar problem with tanks from cinnabar?
 
Had similar problem with new tank from Gateway. There was a piece of
plywood about 3/4 in thick under the old tank that was being used as a
spacer. I removed it and that took care of the problem of being too tall.
The duct problem can be worked around by modifying the mounting brackets for
the water line and the hold down straps. I have removed those brackets and
everything fits. I am in the process of thinking how to remake them so the
hold down straps can be reinstalled.

Russ Bethel
1976 Glenbrook
- -----Original Message-----
From: Thomas G. Warner
To: gmcmotorhome
Date: Thursday, May 07, 1998 10:19 PM
Subject: GMC: Fresh water tank problems, rotted floor

>
>
>Have now inspected my 1976 Palmbeach and the rot is all the way through to
>the foam insulation under the floor in front of the fresh water tank. It
>extends to the LP tank cavity and possibly beyond, and under the sub floor
>towards the generator, from what looks to be long time leaking of the tank.
>How does one replace the floor? How can the foam be removed, to get at the
>bottom of the floor?
>
>Anyone got any expertise in this area?????
>
>Also received the new fresh water tank from cinnabar. It is slightly
higher
>than the old one and not as much room where the hot air duct is supposed to
>be routed. In discussions with cinnabar today they say it is the right
tank
>and something must be wrong with the coach. I tried to explain that my
>setup looks the same as that shown in the manuals. Any one else have a
>similar problem with tanks from cinnabar?
>
>
 
Russ the piece of plywood that roughly is the size of the bottom of the tank
was originally installed to stop rot in that area from possible condensation
from the bottom of the tank. Removing it could cause you more problems

>Had similar problem with new tank from Gateway. There was a piece of
>plywood about 3/4 in thick under the old tank that was being used as a
>spacer. I removed it and that took care of the problem of being too tall.
>The duct problem can be worked around by modifying the mounting brackets for
>the water line and the hold down straps. I have removed those brackets and
>everything fits. I am in the process of thinking how to remake them so the
>hold down straps can be reinstalled.
>
>Russ Bethel
>1976 Glenbrook
>-----Original Message-----
>From: Thomas G. Warner
>To: gmcmotorhome
>Date: Thursday, May 07, 1998 10:19 PM
>Subject: GMC: Fresh water tank problems, rotted floor
>
>
>>
>>
>>Have now inspected my 1976 Palmbeach and the rot is all the way through to
>>the foam insulation under the floor in front of the fresh water tank. It
>>extends to the LP tank cavity and possibly beyond, and under the sub floor
>>towards the generator, from what looks to be long time leaking of the tank.
>>How does one replace the floor? How can the foam be removed, to get at the
>>bottom of the floor?
>>
>>Anyone got any expertise in this area?????
>>
>>Also received the new fresh water tank from cinnabar. It is slightly
>higher
>>than the old one and not as much room where the hot air duct is supposed to
>>be routed. In discussions with cinnabar today they say it is the right
>tank
>>and something must be wrong with the coach. I tried to explain that my
>>setup looks the same as that shown in the manuals. Any one else have a
>>similar problem with tanks from cinnabar?
>>
>>
>
>
>