Piper J-3 Cub - Hangar 9

Section 3: Servo Installation (Aileron) Step 7Tie a wheel collar onto a piece of string. Drop the wheelcollar into the wing from the root and retrieve it from theservo opening. Step 8Tie the string onto the servo extension. Gently pull theextension through the wing using the string. Untie thestring when the servo lead has been pulled through. Usetape to secure the servo lead to the wing to prevent it fromfalling back into the wing panel. Step 9Secure the hatch using four #2 x 3/8" screws.16