Hartzell HC-D2MV20-3 Series Owner's Manual And Logbook page 139

C. Removal of the HC-D2(MV,V)20-7 Propeller Assembly
CAUTION:
(1) Propeller Removal
CAUTION:
(a) Spinner dome removal (if installed)
1
2
(b) On non-governing propellers only, disconnect the
propeller pitch control cable from the hydraulic valve
lever on the long end that extends from the valve
spool.
(c) Remove the hub nut safety pin from the hub nut.
(d) Completely loosen and unthread the hub nut from the
engine shaft threads.
NOTE:
(e) Grip the blade counterweight on each blade clamp
and rotate the blades to high pitch.
(f) Rotate the blades until the push rods that protrude
from the jack plate unit slide out of each of the guide
lug bushings in the hub.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
INSTRUCTIONS AND PROCEDURES IN
THIS SECTION MAY INVOLVE PROPELLER
CRITICAL PARTS. REFER TO THE
INTRODUCTION CHAPTER OF THIS
MANUAL FOR INFORMATION ABOUT
PROPELLER CRITICAL PARTS. REFER TO
THE ILLUSTRATED PARTS LIST CHAPTER
OF THE APPLICABLE OVERHAUL
MANUAL(S) FOR THE IDENTIFICATION OF
SPECIFIC PROPELLER CRITICAL PARTS.
TO PREVENT DAMAGE TO THE BLADE
AND BLADE PAINT, WRAP THE BLADE
SHANKS IN SEVERAL LAYERS OF
MASKING OR DUCT TAPE BEFORE
REMOVING THE SPINNER DOME (IF
INSTALLED).
Remove the screws and washers that secure the
spinner to the spinner bulkhead.
Remove the spinner dome.
Because the hub nut is pulling the propeller
hub off the tapered rear cone, there will be
significant resistance to the loosening of the
shaft nut.
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61-00-40
Page 3-73
Rev. 2 Jun/12