Well,
I 'spect it can be done blind, but dropping the tank isn't that hard.

You have a large plastic tube with spiked endpieces that fit into rubber
grommets on top of the tank. Those grommets can be split, the tube can be
split, the spiked endpieces can be cracked and broken. The plastic tube goes
over the center chassis rail on the van while the tank sits below the rail.
B-yuck.

There are then the small 7mm tubes that go to the expansion tanks. Hard to
remember how they attach but that part can be broken also. The tubes can
crack too.

Then there is the vapor line running up to the fill spout. It goes in
through a metal pipe welded in the top of the tank. That line could have
split.

And finally, there is the large filler tube that goes outside that you put
the gas station hose into. It has a large rubber gasket  that can be
leaking.

Lots of points of leakage. The best bet is to replace all the rubber parts
and the crossover pipe assembly. I think Ken has a kit all made up for this.

tim in san jose

>Hi guys,
>
>Searched the archives about a gos overflow problem (spilling across the
>whole back side of the tank when I filled up tonight) and learned that it
>is
>likely that the grommets have to be replaced, and that it a job that needs
>to be done "blind" if I'm not gonna drop the tank.  Can someone tell me
>what
>I am looking at (no pun intended)?  Do the expansion tank hoses simply
>insert into the grommets, or over a nipple on the grommets, or what?  How
>many grommets are there that I should replace?
>
>I don't have a Bently (asked for one for Christmas), and the repair manual
>I
>do have doesn't discuss the tank at all.
>
>Thanks,
>
>deb
>'85 Westy "Gypsy"

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