16
Required Parts
•.Wing.panel.(right.and.left). •.Mechanical.retract.(2)
•.6".servo.extension.
•.4-40.nut.(2)
•.4-40.metal.clevis.(2).
•.Ball.end.(2)
•#2.standoff.(2).
•.2-56.nut.(2)
•.Clevis.keeper.(2).
•#2.washer.(2)
•.Retract.doors.(right.and.left)
•.4-40.x.1/2".threaded.rod.(2)
•.2-56.x.3/8".socket.head.screw.(2)
•.4-40.x.1/2".socket.head.screw.(12)
•.Retract.servo.with.hardware.(2).(JRPS791)
•.Connector.back.plate.(2)
•.1/2".aluminum.servo.arm.(2)
•.4-40.x.3/8".socket.head.screw.(2)
•.6-32.x.1/2".socket.head.screw.(8)
•#2.x.1/2".sheet.metal.screw.(4)
Required Tools and Adhesives
•.Threadlocking.compound. •.Felt-tipped.pen
•.Drill.
•.Drill.bit:.1/8"
•.Phillips.screwdriver.
•.3/32".hex.wrench
•.4-40.tap
Note
:.The.P-51D.retract.system.is.designed.
to.use.low.profile.hi-torque.retract.servos,.
such.as.the.JRPS791..All.adjustments.to.the.
retracts.are.made.before.the.final.installation.
.
.
Step 1
Position.the.retract.mechanism.over.the.wing.to.determine.
on.which.side.to.mount.the.retract.servo..Use.a.4-40.tap.
to.make.the.appropriate.holes.in.the.mounting.plate.if.
necessary.
.
.
Step 2
Attach.a.6".servo.extension.to.the.retract.servo.and.
secure.the.extansion.to.the.servo.lead.so.it.won’t.unplug.
accidentally.
.
.
Step 3
Mount.the.retract.servo.to.the.mounting.plate.using..
four.4-40.socket.head.screws..It.may.be.necessary.to.
install.the.spacer.plates.depending.on.the.servo..
selected..Use.threadlock.on.the.screws.to.prevent.them.
from.vibrating.loose.
.
.
Step 4
Attach.the.servo.horn.to.the.retract.servo..It.is..
positioned.so.the.arm.moves.from.one.end.of.the.
mechanism.to.the.other.
Section 3: Retract Installation
Summary of Contents for P-51D 1.50 ARF
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