Aileron Servo Installation - Hangar 9 P-51D Mustang 20cc Instruction Manual

30. Remove the control horns from the control surfaces. Apply
epoxy to the slot in the aileron and fl ap. Make sure the epoxy
gets into the slot for a good bond between the surfaces and
control horn.
31. Before the epoxy fully cures, remove the tape from around
the control horn. This will allow the epoxy to fl ow around the
control horn, creating a small fi llet between the control horn
and surface for a fi nished look and secure bond.
 Repeat this section for the remaining aileron installation.
 AILERON SERVO INSTALLATION
32. Use a hobby knife or other sharp tool to puncture the covering
at the screw holes that will secure the cover to the wing. Also
remove the covering for the aileron servo arm in the cover.
33. Use a hobby knife with a #11 blade to remove the covering
for the aileron servo arm in the cover.
34. Place the cover back into position. Use a pin vise and 1/16-
inch (1.5mm) drill bit to drill the mounts for the servo covers.
Use care not to drill through the covering on the top of the
wing.
EN
35. Thread an M2 x 10 sheet metal screw into each hole
using a #1 Phillips screwdriver. Remove the screws before
proceeding.
36. Apply a small amount of thin CA to harden the threads
made in the previous step. Allow the CA to fully cure before
installing the aileron servo cover.
 Prepare the flap servo covers at this time as well.
37. Use a pin vise and 5/32-inch (2mm) drill bit to drill the
holes for the servo mounting screws. Make sure to harden
the holes using the technique outlined in Steps 30 and 31.
Use the screws provided with the servo and a #1 Phillips
screwdriver when installing the screws.
38. Secure the servo to the cover using a #1 Phillips screwdriver
and the screws provided with the servo.
39. Secure a 12-inch (300mm) servo extension to the servo using
a commercially available fastener (SPMA3054).
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