gas tank leaks

[thom hole]

I also had leaks from the tops of my tanks (as well as other locations) and
found it to be coming from the 'sending unit' seal that fits betweeen the
tank and the sending unit. The seal is a large (4 inch or so) o-ring that
is held in place by a less-than-precise collar that turns under 3 tabs and
puts pressure on the sending unit. My o-rings had dryed up and leaked..

>There are baffles in the tanks. They were welded and occasionalling the
>weld breaks at the top of the tank. Some kind of epoxy or JB Weld was
>used to repair both of my tanks but to finally get to you question...I
>don't know how they drained the tanks.
>
>Seems to me you have to raise the coach some and drain into pans or big
>buckets. There are drain plugs for each tank.
>
>You may have to take a trip to use up some of that fuel.
>
> David Lee Greenberg
>GMC Motorhome Registry
> 200 MacFarlane Drive
>Delray Beach, FL 33483-6829
>

>>David...I did talk to Alex, he has some cabinets like mine, but just
>>describes
>>them as "usable". Seems I might take a chance, though.
>>
>>I now have a gasoline leak coming from the top to the passenger side
>>tank. I
>>know I overfilled, but now I have to get enough fuel out to drop the
>>tank and
>>find the offending line or? Thanks, Larry
>>

 

[thom hole]

Removal of the Collar can be done with gentle taps to the trhee 'ears' that
stick up from arond the collar. You only need to rotate it about 45 degrees
to remove it..

>If that is my problem (leaks under at the sending unit o-ring), do you really
>need the special tool shown in the manual to remove the sending units? Thanks
>for you advice. I've got 50 gallons to burn off.....and it has stopped leaking
>(I really filled those tanks!) Whe I get the level down to where I can drain,
>I will do so and drop the tanks, hoping I can tell what's bad.
>