Hangar 9 J-3 Piper Cub Assembly Manual page 10

Section 3: Installing the Aileron Servos
8. Now mark two equidistant holes as shown on the servo
cover where the servo blocks are to be mounted. Two
sheet metal screws, included with the J-3 Cub, will be
used to mount each block to the servo cover.
9. Using a 1/16" drill bit, drill the servo cover at the four
marked locations.
10. Holding the servo in place, drill four 1/16" pilot holes into
the wood servo blocks.
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11. Using 30 minute epoxy, glue the servo blocks in place,
then screw them into position with 4 sheet metal screws.
12. Center the aileron cover over the aileron cut-out in the
wing and drill four 1/16" holes at each corner of the
aileron cover through the wing's bottom surface.
13. Screw the aileron cover in place with four sheet metal
screws as shown.
14. Now repeat these steps to install the servo on the other
wing half.
15. Remove the aileron covers from the wing halves.
CONTINUED