Propeller Owner's Manual
175
MAINTENANCE PRACTICES
61-00-75
Page 6-22
Rev. 1
Jun/11
(
2
) Rotate the blades by hand to move the blades and
piston to low pitch.
NOTE:
Low pitch is reached when a washer on
the end of each piston guide rod stops
against the guide collar.
(
a
) With the blade in a horizontal position, measure low
pitch blade angle.
(
b
) If the blade angle
requires adjustment
, have the
low pitch stop adjusted by an appropriately licensed
service
facility or by the Hartzell factory.
C.
Low pitch measurement on propeller models
HC-82( )( )-2( )( )
(1) Low pitch measurement
must be performed at an
appropriately licensed
service
facility or at the Hartzell
factory.
D.
L
ow pitch measurement on propeller models
HC-8( )( )-1( )( )( )
(
1
) Rotate the blades by hand to move the blades and
piston to low pitch.
(
2
) With the blade in a horizontal position, measure the low
pitch blade angle.
(
3
) If the blade angle
requires adjustment
, have the low
pitch stop adjusted by an appropriately licensed
service
facility or by the Hartzell factory.
E. L
ow pitch measurement on propeller models
HC-8( )( )-3( )( )
WARNING:
PLACE THE PROPELLER IN FEATHER
POSITION BEFORE REMOVING THE
PISTON NUT FROM THE PITCH CHANGE
ROD.
CAUTION:
PLACE A PAN UNDER THE PROPELLER
PISTON BEFORE REMOVING THE NUT
AND MOVING THE PISTON, AS ENGINE
OIL MAY COME OUT OF THE OPENING IN
THE PISTON.
(
1
) Remove the piston nut from the pitch change rod.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
