Hangar 9 P-51D Mustang Sport 40 ARF Assembly Manual page 39


Step 11
Use side cutters to remove any excess from the servo horn
so it doesn't interfere with the operation of the retract servo.

Step 12
Slide a clevis retainer on a clevis. Thread the clevis 12-turns
on the retract servo linkage.
Hangar 9 P-51D Mustang Sport 40 Assembly Manual

Step 13
With the radio system on, set the endpoints to 0 for both the
UP and DOWN positions. Install the servo horn and linkage
as shown. The valve should be in the middle of the throw, so
adjust the clevis as necessary to center the valve throw.
Important: The pin in the clevis must be positioned
vertically as shown in the photos. If the pin is not
vertical it will cause premature wear on the valve and it
will begin to leak and not operate correctly.

Step 14
Use the endpoints of the radio to set the throw of the servo.
Slowly increase the throw from 0 until the throw is correct.
Make sure to set both the up and down throws for the servo.
LInKAgE InSTALLATIon
AnD ADjuSTMEnT FoR MInI SERvo

Step F
With the radio system on, set the endpoints to 0 for both the
UP and DOWN positions. Install the servo horn and linkage
as shown. The valve should be in the middle of the throw, so
adjust the clevis as necessary to center the valve throw.
Important: The pin in the clevis must be positioned
vertically as shown in the photos. If the pin is not
vertical it will cause premature wear on the valve and it
will begin to leak and not operate correctly.
39