Propeller Owner's Manual
175
MAINTENANCE PRACTICES
61-00-75
Page 6-5
Rev. 1
Jun/11
2. Lubrication
A. Lubrication Intervals
(1) The propeller is to be lubricated at 12 months or at 100
hour intervals, whichever occurs first.
NOTE 1
: If annual operation is significantly less than
100 hours, calendar lubrication intervals
should be reduced to six months.
NOTE 2: If the aircraft is operated or stored under
adverse atmospheric conditions, e.g. high
humidity, salt air, calendar lubrication intervals
should be reduced to six months.
(2) Owners of high use aircraft may wish to extend their
lubrication intervals. Lubrication interval may be
gradually extended after evaluation of previous propeller
overhauls, with regard to bearing wear and internal
corrosion.
(3) New or newly overhauled propellers should be lubricated
after the first one or two hours of operation, because
centrifugal loads will pack and redistribute grease.
(a) Purchasers of new aircraft should check the
propeller logbook to verify whether the propeller was
lubricated by the manufacturer during flight testing.
If not, the propeller should be serviced at earliest
convenience.
B. Lubrication Procedure
CAUTION:
FOLLOW LUBRICATION PROCEDURES
CORRECTLY TO MAINTAIN AN
ACCURATE BALANCE OF THE
PROPELLER ASSEMBLY.
(1) Remove the propeller spinner.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
