Great Planes Piper J-3 Cub 20 Kit - GPMA0158 - Manual (Page 38)

D 1 Cut the hinge slots for the rudder and test fit the
rudder to the fin with the tail gear wire in position When
satisfied with the fit, remove the rudder Coat the wire with
petroleum jelly where it passes through the bearing, to
prevent it from becoming glued to the bearing Use
30-minute epoxy to glue the tail gear wire bearing into
the fuse.
D 1 Install the 5/32" wheel collars (not included) against
the inside bend of each landing gear wire Install the main
wheels and the other 5/32" wheel collars to secure the
wheels to the landing gear Place the wheel collars as close
to the wheels as possible without interfering with
free rotation
D 2 Pack the tail gear wire hole in the rudder with
epoxy, then install the rudder in the same way as the
elevators using two hinges
D 3. Cut the hinge slots for the ailerons and test fit the
ailerons to the wing When satisfied with the fit, remove the
ailerons Coat the aileron torque rod with petroleum jelly
where it passes through the bearing to prevent epoxy from
entering the bearing.
D 2 Mark the landing gear at the outboard edge of the
wheel collar Remove the wheel collar and cut off the
excess landing gear wire to allow the hubcaps to be
mounted to the wheel.
D 4 Pack the torque rod hole in the aileron with epoxy,
then install the aileron in the same way as the elevators
using three hinges on each aileron.
D 3 File or grind a flat spot where the wheel collar set
screw contacts each axle.
D 5. Insert the rudder and elevator pushrods in the
fuselage and connect the clevises to the control horns
Insert the throttle linkage in the guide tube and connect the
linkage to the throttle arm on the carburetor.
D 6. Install a propeller on the engine If you are using a
spinner nut to hold the propeller on the engine, install it at
this time. D 4 Reinstall the wheel and wheel collar using liquid
thread locking compound on the set screw, and glue the
hubcaps to the wheels with thick CA
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