Sonex Oops Fittings Installation Instructions User Manual

Page 2

sonex aircraft

LLC

The Oops fitting installed.

Installing an Oops Fitting

Note: This is just one method which can be used to position an

Oops fitting in the tank. Any tools or methods that accomplish

the task are acceptable.
1. Thoroughly clean the inside of the tank.
2. Guide a flexible wire (electrical wire, coat hangar, safety

wire, etc.) into the hole where the old fitting was, through

the tank, and out the filler neck.

3. Place the internal fitting (with one O-ring) over the wire

and let it slide through the tank to the hole of the old fit-

ting.

4. Attach a 3/4" diameter washer to the end of the wire

which extends from the filler neck and pull the wire/

washer into the tank until the washer contacts the internal

fitting and "pushes" it through the hole.

5. Slide the lock nut (with o-ring) over the wire and onto the

fitting. Tighten the lock nut by turning it counterclockwise

onto the fitting. Wrench flats on the end of the internal

fitting allow it to be held with a wrench while the nut is

tightened.

6. Remove the wire and washer from the tank.

7. It is wise to test the fittings for leaks before re-installing

the tank. If you use air pressure do not apply more than 5

psi.

Installing Fuel Fittings

When installing fuel fittings into the Oops fitting the wrench

flats on the Oops fitting permit easy tightening of the fuel fit-

ting without spinning the Oops fitting in the tank.