Propeller Shaft Failures
Propeller shaft failures can occur when incorrect propeller hardware is installed.
The thrust bushing provided with some competitor’s propeller and removable
hub kits may be significantly thinner than the thrust bushing provided with BRP
propeller kits.
The surface area of the thrust bushing which contacts the propeller shaft does
not provide sufficient clamp load after the propeller hardware and propeller are
installed.
Insufficient clamp load causes the propeller to loosen and can result in scoring of
the propeller shaft by the thrust bushing. The area that is scored by the thrust
bushing will weaken. Because the loose propeller puts an abnormal amount of
stress on the propeller shaft, the failure occurs at the weak point created by the
insufficient clamp load on the thrust bushing. This type of failure also results in
the loss of the propeller and propeller hardware.
Note: Incorrect installation of any manufacturer’s propeller and propeller hard-
ware that results in the failure of the propeller shaft is not a condition which will
be covered under the BRP Limited Warranty.
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