General; Troubleshooting; Removal; Propeller Inspection - Cub Crafters CC11-100 Maintenance Manual

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GENERAL

(1) TROUBLESHOOTING

If the propeller-engine combination feels rough in flight;
(a) Check that the mounting face of the propeller is tight against the engine flange
and check the blade track.
(b) Verify that the attaching bolts have reached their required torque and have not
bottomed out of the threads.
(c) Remove the propeller, rotate it 180 degrees on the engine crankshaft flange, and
re-install. Again, check the blade track.
(d) If roughness or vibration is still present, dynamic propeller balancing may be
required.

(2) REMOVAL

(a) Be certain that magneto switch is off, and that both magnetos are grounded.
(b) Remove the spinner dome.
(c) Mark the aft bulkhead propeller and spinner with tape, so they are reinstalled in
the same orientation.
(d) Remove safety wire on propeller mounting bolts.
(e) Remove the spinner.
(f) Remove the propeller bolts.
(g) Remove the propeller from the flange. A slight rocking may be necessary to
remove the propeller. Be careful during the removal; if the propeller is tight on the
flange it is possible to tear out the back of the hub around the center bore and
bolt hole counterbores.
(h) Assistance may be needed to hold the propeller and spinner backing plate.

(3) PROPELLER INSPECTION

(a) Examine the propeller blades for corrosion, cracks, nicks, or dents beyond the
permissible limits. These limits will be found in the propeller manufacturer's
service manuals. If the propeller is unserviceable, replace it with a new one and
return the damaged propeller to the factory. Remove the spinner.
6.3.16
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CUB CRAFTERS, INC.
CC11-100 MAINTENANCE MANUAL
Manual number SC10000AMM
Date: 08/02/2010