Section 9: Landing Gear Assembly And Installation - Hangar 9 J-3 Piper Cub Assembly Manual

Section 9: Landing Gear Assembly and Installation

3. Turn the fuselage upside down. Use a ruler to measure
rearward approximately 5-1/4
a mark on the fuselage with a pencil. The pencil should
leave a light indentation in the covering.
Note: In order to prevent interference with the former inside the
fuselage, it is imperative that the measurement is from the
front edge of the firewall and not the edge of the fuselage
itself.
4. Using a pencil and a straight edge, draw a line
perpendicular to the fuselage through the mark made in
the previous step. This line will serve as an alignment
guide for the aluminum landing gear.
5. Precisely align the landing gear so that the front edge of
the gear is even with the alignment guide drawn
previously. Once you are satisfied with the alignment of
" from the firewall and make
the landing gear, mark the mounting hole locations
through the landing gear onto the fuselage and remove the
gear from the fuselage.
Note:It is imperative to the ground handling characteristics of
the aircraft that the landing gear is straight.
6. Using a 1/8 " drill bit, drill the three mounting holes as
marked. Prior to drilling the mounting holes it is
important to ensure that the mounting hardware will not
interfere with the fuselage former or the triangular braces
within the fuselage.
7. Attach the landing gear with the remaining 4mm screws
and nuts. Use Blue Locktite 242 to secure the nuts in
place and tighten.
CONTINUED
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