Hartzell HC-B3-2 Series Owner's Manual And Logbook page 149

WARNING:
CAUTION:
(10) Insert two dowel pins (Refer to Table 3-1) through the
threadless holes in the propeller flange, flush with the
propeller side of the hub flange. The dowel pins will
protrude from the engine side of the hub flange to
engage the engine flange.
(11) With a suitable crane hoist and sling, carefully move
the propeller assembly to the aircraft engine mounting
flange.
NOTE:
(12) Make sure the propeller hub flange and engine flange
mating surfaces are clean.
(13) Install the specified O-ring on the engine flange. Refer to
Table 3-1.
CAUTION:
(14) Slide the propeller over the beta valve assembly.
(15) Align the mounting holes and dowel pins in the propeller
hub flange with the mounting holes and dowel pin holes
in the engine flange.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
MAKE SURE THE SLING IS RATED UP
TO 800 LBS (363 KG) TO SUPPORT THE
WEIGHT OF THE PROPELLER ASSEMBLY
DURING REMOVAL.
INSERT THE DOWEL PINS INTO
THE PROPELLER FLANGE USING A
BRASS HAMMER OR EQUIVALENT
TOOL TO PREVENT DAMAGE TO THE
DOWEL PINS. THE DOWEL PINS ARE
AN INTERFERENCE FIT WITH THE
PROPELLER FLANGE.
If the propeller is equipped with a de-ice
system, refer to the General Maintenance
Practices section in the Introduction chapter of
this manual.
DO NOT ALLOW THE PROPELLER
ASSEMBLY TO HIT OR REST ON THE
BETA FEEDBACK ROD. THIS COULD
BEND OR OTHERWISE DAMAGE THE
FEEDBACK ROD.
139
61-00-39
Rev. 17 Apr/20
Page 3-49