----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
James: The torque value on the fuel pump cap is 30 + or - 5 inch
pounds
"Yes, we did and what it the torque value? I have left the little red
pamphlet service manual (from Univair) at Rutherfordton and am in Asheville
preparing to drive to Sevierville."
I must apologize again, because I made it sound like the restrictor is in the fuel line. The restrictor is normally in the outlet fitting of the fuel pump. The fitting is plugged except for a 1/16 inch diameter hole to let the fuel out. I believe this restricts the fuel flow to approximately 7 gallons per hour.
"Yes, we did and what it the torque value? I have left the little red
pamphlet service manual (from Univair) at Rutherfordton and am in Asheville
preparing to drive to Sevierville."
I must apologize again, because I made it sound like the restrictor is in the fuel line. The restrictor is normally in the outlet fitting of the fuel pump. The fitting is plugged except for a 1/16 inch diameter hole to let the fuel out. I believe this restricts the fuel flow to approximately 7 gallons per hour.
I have put all of Alon service bulletin # 16 and
most of bulletin # 19 in two different Alons. I do not believe that these are
required, as long as the system is working properly. I believe these as well as
some of the other Alon bulletins were put out because someone had trouble with
the fuel system and the legal department reacted.
If you have one wing tank cap with a vent hole and
one without, as well as a vent hole in the header tank cap, I would plug the
hole in the wing tank cap and test fly the airplane to make certain that fuel
flows properly from both wing tanks. One Alon I worked on had fuel troubles,
which turned out to be trash in the header tank. I tried vents in the wing
tanks, but found it worked better with the thermos bottle type.
It does sounds like you may have had a fuel pump
failure, and if so, I would order a rebuilt pump for a C-90. As I said before, I
do not recommend using an automotive pump.
I am glad you are learning about the Alon fuel
system and are talking to us about it. Hopefully, you will find the
problem(s).
Lynn Nelsen
============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
