
42
Hangar 9 Jackal 50 ARF
22. Thread the ball end on the pushrod wire. The
position will be adjusted in the next few steps.
Important
: The wing installation in this section
is only for adjusting the retracts. Please follow the
procedure in “Wing Installation” for the complete
details for the wing installation.
23. Slide the wing tube into the wing panel.
24. Slide the wing panel into position in the fuselage.
Use a 4-40 x 1-inch socket head screw and #4 washer to
hold the wing in position. You don’t need to tighten the
screw, it is just holding the wing in position.
Note
: Setting the linkage correctly will take some time
and patience. Work slowly and make small adjustments
to the linkage so the main gear retract operates
correctly.
25. Use the radio system to move the retract servo
to the up position. Move the linkage so the main gear is
in the up and locked position. Connect the ball end to the
ball on the servo arm. You may need to adjust the length of
the linkage to get the ball end to align with the ball on the
servo horn.
26. Use the radio system to move the retract servo to
the down position. Check that the gear is down and locked at
this time. If not, adjust the length of the linkage as necessary
to make sure the gear is down and locked.
Note
: Check to make sure the nose gear and main gear
are moving up and down together. If you find the nose
gear up when the main gear is down, remove the servo
horn from the nose gear retract servo and rotate it
180-degrees so the gears move in unison.
27. Use the radio to cycle the gear a number of times,
checking that the length of the linkage is correct. Although
it is important the gear locks in both the up and down
positions, it is most critical it is fully locked when down or
it may collapse on the runway during takeoff or landing.
Also make sure the servo is not binding at either position,
as this will quickly drain the receiver battery. Take your time
to set the linkage perfectly. Once complete, tighten the 2-56
nut against the retract actuator to prevent it from changing
position.
28. Repeat Steps 21 through 26 to prepare and install the
remaining main landing gear retract.