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Hey Ed: I would imagine, if you have obtained a parts catalog, that most of
your questions have been answered. The number and type of hardware that hold
the brake support assembly and brake pedal on are listed in figure 13 on
pages 16 and 17. And the fuel system for your serial # (4398) is shown on page
27, figure 20. You are fortunate to have one of the most knowledgeable
mechanics
about the Ercoupe located near you in Springfield IL (John Wright, Sr. phone
217 546 0585) He may already be familiar with your particular aircraft.
The floor boards have often been modified on these older airplanes, and
been replaced with non aircraft plywood. This is usually thicker than the
original floor boards, which then causes a problem with the fit of the
hardware,
etc. You can easily check this by looking at the edge of the floor board
pieces. If they are 5 ply 1/4 inch aircraft plywood, they are the original
size.
If they are 4 ply 5/16 or 3/8, then they have been changed.
Assuming you have the original size floor boards, the triangular plates
that hold the brake pedal are held down to the large floor board with two
(each) AN 3-5A bolts and AN 365-632 nuts. The brake arm is held to the
brackets
with an AN 3-17 bolt, AN 320-3 nut using an AN 960-10 washer and AN 380-2-2
cotter pin. These are put on so that the brake arm will move freely and come
out of the hole in the forward floor board. You must put the brackets and
brake arm on prior to mounting the forward floor board. The brackets each have
a
#10 nut plate mounted to them so you can put #10-32 screws in to them to help
hold the floor board in place. After you have them mounted, you can put the
brake pedal on which is held in place by two 7/8 inch long screws. (I believe
they are AN 515-6-14 screws with AN 365-632 nuts)
I believe the plate that surrounds the control column was held on
originally by 11 #6 sheet metal screws approximately 3/8 inches long. Yes, the
seat
pan should be fastened down. It is held to the ribs of the center section
assembly with # 10-32 screws approximately 5/8 inches long. It should also be
fastened to the front spar cap with two # 6-32 screws. Removal of these screws
allow you to lift the seat pan and check/lubricate the pitch cables/bell
crank.
The fuel gauge is a very simple cork float arrangement which shows the
fuel level in the left tank. This also includes the fuel in the RH tank due to
the cross over fuel line (# 5 and 7 of figure 20 in the parts book). As long
as the crossover line is installed properly, the fuel level in both tanks
will be approximately equal in level flight or sitting on level ground.
I do not understand your question about the hole in the brake pedal. The
two screws that hold it to the brake arm go through in such a manner that
the pedal is up, and the screws are near the bottom. There should not be
another hole in the brake pedal.
Good Luck in getting it all back together and welcome to the Couper's net.
Lynn Nelsen
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