Bailey Moyes 912 Dragonfly, Maintenance Manual

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PUSHER TRACTOR
9. For Pusher aircraft , place the notched end of the protractor against the trailing edge of each prop
blade. For Tractor applications, the notched end should be on the Leading edge of each blade.
Rotate the blade until it sits flat against the leading and trailing edge of the protractor.
IMPORTANT : Ensure that the ears on the protractor are flush against the hub when the setting the
blade angle. To hold the blade setting, carefully torque the two nuts on the shoulder bolts to 3-4 foot
lbs. Repeat procedure for the other blades.
10. When all blade angles have been set and using a calibrated torque wrench, tighten the Nyloc
nuts sequentially with 5 ft. lb. increments to 14.5-foot lb. This will help to insure proper tracking.
Check the pitch of all blades again, and once satisfied, begin torquing the (center) mounting hardware
sequentially, opposing and with 5 ft. lb. increments to
14.5 lb. A 13mm crows foot on the end of the
torque wrench works well to access the nuts on the backside of the gearbox prop flange. Double-
check the pitch setting again. Do not under torque.
WARNING!!! DO NOT OVER OR UNDER TORQUE BOLTS! NEVER START ENGINE WITHOUT
PROPER TORQUE ON BOLTS OR DAMAGES INCLUDING LOSS OF PROPELLER, INJURY OR
DEATH MAY RESULT!!!
Appendix E1 Page 3