Hangar 9 P-51 Mustang ARF Assembly Manual page 9

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Step 4
Slide the aileron into position on the wing by guiding the
hinges into the hinge slots in the wing. Push the aileron
so there is little to no gap between the aileron hinge line.
 
Step 5
Check the position of the aileron in relationship to the
wing tip. It must be as close as possible and still be
able to move without rubbing against the wing tip. If
it is not close enough to the wing tip it may interfere
with the flap operation.
Section 1: Hinging the Ailerons and Flaps
 
Step 6
Remove the T-pins from the hinges. Deflect the aileron
slightly without changing the hinge gap between the
aileron and wing. Apply thin CA to each of the hinges
and allow it to soak into the hinge. Do not use accelerator
as it will not allow the CA to soak into the hinge. Make
sure to apply enough CA to fully soak the hinge,
both top and bottom.
 
Step 7
Once the CA has fully cured, gently pull on the aileron to
make sure the hinges are glued securely to both the wing
and aileron. Use care not to crush the wing or aileron.
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