Today's Message Index:
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1. 12:47 PM - Fuel Cap Leak ()
2. 04:08 PM - Fuel Cap Leak (Amy Hackworth)
3. 05:24 PM - Re: Fuel Cap Leak (Hugh)
4. 07:17 PM - Fuel Cap Leakage (Amy Hackworth)
Message 1
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Gentlemen:
I have an Allegro 2000, and am experiencing some fuel leakage out of the
main belly tank fuel cap (Plug). I believe the fuel is leaking out of the
key slot where you lock the fuel cap. At least the indication is that it is
coming from the key slot. There are streaks of fuel stain along the side of
the fuselage, and the source is clearly coming from the key slot. When the
cap is in place, closed and locked, the orientation of the key slot is at
three o'clock, and the plastic tab that rotates is at nine o'clock. Can some
one tell me if they have had a problem like this? Could I have the cap
itself rotated to the wrong position (i.e. is the key slot suppose to be at
a different position on the clock when the cap is in place and closed?
Hugh McKay
Allegro 2000
Rotax 912 UL
N661WW
Message 2
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Hugh,
I have a 2006 Allegro 2000 and had the same cap leakage problem. I
ended up sealing the keyhole with form a gasket and it leaked only a
tiny bit afterward and then has sealed itself for good. Aircraft Spruce
offers the same cap without the lock if you want to spend the money.
I am having problems with the fuel tank bleeder on the belly of the
plane. It keeps getting clogged with large black particles (nearly
every time I check the fuel for water). I can't figure out where they
are coming from, but have to remove the mechanism and blow it out each
time because it won't spring back up and seal. I thought it might be
the black silicone the fuel level sensor is held in with, but after
removing the remainder of that material I'm still getting particles. By
the way, I flushed the tank twice before filling the first time and have
checked the fuel cans as well. Incidently, I have changed the o ring to
the latest version and can see that it is still in good shape. Any
ideas???
Dale Hackworth
2006 Allegro 2000 Amphib
N306AD
Hobe Sound, FL
Message 3
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Dale:
Do I understand you just forgot about locking the fuel cap and completely
sealed the key hole? If you did what did you use to seal it with that would
not deteriate from coming in contact with gasoline? Is "Form a Gasket" a
material? Please explain this in more detail.
I understand the fiberglass belly tank of the Allegro is coated, or "lined"
inside with some type of material to prevent the fuel from coming in contact
with the fiberglass itself. The black material may be part of this lining. I
am guessing, but that is all I can think of at this point. I hope it is not
the lining, because I don't know how one would fix that type problem. Have
you asked The US Distributor if this has ever occurred before? However,
based on my experience with them, you won't get an answer.
Hugh McKay
_____
From: owner-allegro-list-server@matronics.com
[mailto:owner-allegro-list-server@matronics.com] On Behalf Of Amy Hackworth
Sent: Saturday, August 09, 2008 7:08 PM
Subject: Allegro-List: Fuel Cap Leak
Hugh,
I have a 2006 Allegro 2000 and had the same cap leakage problem. I ended up
sealing the keyhole with form a gasket and it leaked only a tiny bit
afterward and then has sealed itself for good. Aircraft Spruce offers the
same cap without the lock if you want to spend the money.
I am having problems with the fuel tank bleeder on the belly of the plane.
It keeps getting clogged with large black particles (nearly every time I
check the fuel for water). I can't figure out where they are coming from,
but have to remove the mechanism and blow it out each time because it won't
spring back up and seal. I thought it might be the black silicone the fuel
level sensor is held in with, but after removing the remainder of that
material I'm still getting particles. By the way, I flushed the tank twice
before filling the first time and have checked the fuel cans as well.
Incidently, I have changed the o ring to the latest version and can see that
it is still in good shape. Any ideas???
Dale Hackworth
2006 Allegro 2000 Amphib
N306AD
Hobe Sound, FL
Message 4
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| Subject: | Fuel Cap Leakage |
Hugh,
Yes, I did seal off the key hole on my fuel cap. I will be at the
hangar tomorrow and will forward the exact name of the material I used.
Yes, I did contact Allegro about the black particals, but they reported
no trouble on any of their planes. I'll keep studying the situation and
will let everyone know if I find a solution.
Thanks,
Dale Hackworth
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