Top Flite TOPA0708 - Manual (Page 19)

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2. Attach a 12" [305mm] piece of pressure tubing to
the front of the retract pressure tank. Use Shoe Goo
or an RTV adhesive to glue the pressure tank in the
fuselage. Note that the front of the tank is inserted under
the throttle servo tray and then slide forward.
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3. Glue the retract servo tray together as shown.
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4. Test fi t the retract servo tray and receiver tray in
the fuselage. Drill a 1/16" [1.6mm] pilot hole in throttle
servo tray, using the eight mounting holes as guides.
Attach the retract servo tray and receiver tray with #2
x 3/8" [9.5mm] sheet metal screws and #2 washers.
Remove the screws and the trays and harden the screw
holes with thin CA.
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5. Install the retract control valve in the plywood mount.
Install a .080 ball link ball and .080 nut on the valve. Be
sure to use a drop of threadlocker on the threads of the
ball link ball and the control valve mounting ring.
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6. Reinstall the retract servo tray in the fuselage.
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7. Wrap the receiver in foam and secure it to the
servo tray with hook and loop material. To make the
strap, overlap by 1" [25mm] the hook material with the
loop material. Mount the receiver tray in the fuselage.
Install the retract control valve servo in the retract servo
tray and plug it into the receiver.
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8. Glue short pieces of remaining white pushrod
tubing to the former to support the antenna.