30. "How do I remove my in-line filter that lives INSIDE my gas tank?"
Description
This article is from the Ducatis Motorcycles FAQ, by Duke Robillard duke@io.com with numerous contributions by others.
30. "How do I remove my in-line filter that lives INSIDE my gas tank?"
How to remove your in-line filter -- 750ss & 900ss & sl, 851 variants, 750
& 906 Pasos & 907ie, and assorted unnamed rubberbandheads.
by Michael Nelson, (nelson@seahunt.imat.com)
Predicament:
"With my recent flaky engine response and poor idling, I would like to look
at the contents of my in-line gas filter. My manual shows one INSIDE the
gas tank. Anybody play with these before? Any way to take it out for a
look/replace?"
Yes. If it's like the 851's, you have five or six 4mm allen screws that
hold the cap assembly in place. Remove them (only three of them actually
hold it in place... the ones at 12 o'clock, 4 o'clock, and 7 o'clock when
viewed from the seat... the others are dummies and don't need to be
removed). Lift that sucker off. BTW, I'd disconnect the battery (to avoid
sparks) before starting on this job, and do it in a well ventilated area
with no nearby flame sources (water heater pilot lights, etc.). Around the
perimeter of the aluminum casting that remains in the tank, there are a
series of 2mm or so Allens. Back each of them out so you can see about 1/8"
of threads. You don't need to remove them completely, but if you do, stuff
a rag in the hole first so you don't drop the little buggers in the tank.
When you get them all loosened, the aluminum fitting will be held in by
tension from the black rubber o-ring and the green rubber o-ring lower on
the fitting. Pull up firmly on it 'til it comes out, and then underneath
there will be a drain hose. Loosen the clamp and pull it off. Remove the
aluminum casting and set it aside.
Now you just reach down into the tank and the gasoline and feel around.
There will be numerous rubber fuel lines in there. Feel down toward the
bottom of the tank near the seat. That's where the fuel pump lives. The
fuel pump can be identified by feel because there are two wires going to it
as well as a couple of fuel lines. The fuel pump is mounted in a rubber
collar and is just a slip/tension fit in the collar and a bracket in the
tank... you can just pull it out. Once you pull the pump out, you'll be
able to pull the whole shebang including the lines and filters out above
the big hole in the tank where it is easy to loosen the clamps on the fuel
hoses.
Nifty cost-saving tip: the BMW K-bike filter is the same as the Duck one at
a considerably lower price. Went over to the BMW dealer in SF and picked
one up... $12.00. And yes, it's the same as the one Ducati sells for more
than twice as much. It's BMW part number
"13 32 1 461 265"
Remove the old filter, plug in the new one, reconnect the hoses and
re-tighten the hose clamps. Push the fuel pump back into its mounting, and
reassemble everything in the reverse order. It all sounds complicated but
it's a lot harder to describe the procedure than it is to actually do it.
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