Hartzell HC-D2MV20-3 Series, Owner'S Manual And Logbook

Page: 85 / 204

Propeller Owner’s Manual
140
INSTALLATION AND REMOVAL
61-00-40
Page 3-21
Nov/02
WARNING: DO NOT RESET BLADES IN
CLAMPS TO COMPENSATE FOR
REVERSE BLADE ANGLE CHANGE.
3 Reassemble the propeller in, using the correct
dash number spacer ring (see Table 3-3) to
provide 0.025 inch (0.63 mm) minimum clearance
between each clamp and the valve.
4 Reinstall the propeller in accordance with this
chapter.
(c) Confirm the proper high pitch blade angle as follows:
CAUTION: THE VALVE MUST BE IN HIGH
PITCH POSITION TO BLEED AIR
INTO THE CYLINDER.
(d) Rotate the blades by hand toward high pitch, until
travel is limited by the hydraulic unit.
(e) Measure the high pitch blade angle to confirm that it is
a minimum of 19.5 degrees.
(f) If the high pitch blade angle is less than 19.5 degrees,
follow steps 4.C.(8)(f)1 through 4.C.(8)(f)4 below, to
remove the propeller and install additional spacer(s)
to achieve the desired high pitch blade angle.
1 Remove the propeller in accordance with the
removal instructions in this chapter.
2 Remove the rear cone and spacer.
NOTE: Each additional spacer will increase
high pitch angle by approximately 1.5
degrees.
3 Reinstall the rear cone with additional spacer(s)
to achieve 19.5 degrees minimum.
NOTE: It is recommended that the minimum
number of spacers be used to achieve
the required blade angle.
4 Reinstall the propeller in accordance with
instructions in this chapter.