Hangar 9 P-51D 1.50 ARF Assembly Manual page 17

 
. .Step 5
Assemble.and.install.the.linkage.using.the.4-40.x.1/2".
threaded.rod,.ball.end.and.metal.clevis..Attach.the.clevis.
to.the.retract.actuator,.and.use.a.2-56.socket.head.screw,.
#2.standoff,.#2.washer.and.2-56.nut.to.attach.the.ball-link.
to.the.servo.arm..(Hardware.not.included,.use.genuine.
Hangar.9 ® .hardware.and.servo.arms.for.the.installation..
of.your.retract.servo.)
Section 3: Retract Installation
 
. .Step 6
Check.that.the.retract.fully.locks.at.both.up.and.down.
positions.without.stalling.the.servo..Adjust.the.length.of.
the.linkage.and.the.position.of.the.linkage.at.the.servo.
until.both.up.and.down.locked.positions.are.achieved.
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