12 February, 1997
(1) Check that the spacer is mounted flush against the propeller. Any gap can lead to a propeller out of track.
(2) If the spacer has been removed for spinner bulkhead installation has it been properly re-installed. (See Propeller Installation Instructions (Flanged Installations with Drive Bushings OR Lock Nut Installations) for Sensenich Fixed-Pitch Metal Propellers.)
(1) If a spinner bulkhead is installed either between the propeller and spacer or between the spacer and engine flange, check the spinner rear bulkhead to insure it has a consistant thickness. We have found some cases where the bulkhead thickness varied causing propeller face tracking problems and vibration.
(2) Check the spinner for balance. If it has been installed between the spacer and propeller, have the entire assembly balanced together.
(3) Check spinner dome alignment when completing installation. Ensure that the spinner dome runs true, a dial indicator may be used on the nose of the dome for centering.
(1) Install the propeller in accordance with "Propeller Installation (Flanged Installations with Drive Bushings OR Lock Nut Installations) Instructions for Sensenich Fixed-Pitch Metal Propellers"
(2) After the propeller has been installed check that the mounting face of the spacer or propeller is tight against the engine flange.
(3) Verify that the attaching bolts have reached their required torque and have not bottomed out of the threads.
(4) Check the face alignment of the tips.
(5) Rotate Propeller 180 Degrees
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