Propeller Owner’s Manual
147
INSTALLATION AND REMOVAL
61-00-47
Page 3-62
Rev. 17 Sep/20
WARNING 1: DURING ENGINE INSTALLATION OR
REMOVAL, USING THE PROPELLER TO
SUPPORT THE WEIGHT OF THE ENGINE
IS NOT AUTHORIZED. UNAPPROVED
INSTALLATION AND REMOVAL
TECHNIQUES MAY CAUSE DAMAGE TO
THE PROPELLER THAT MAY LEAD TO
FAILURE AND RESULT IN AN AIRCRAFT
ACCIDENT.
WARNING 2: DURING PROPELLER REMOVAL,
AIRFRAME MANUFACTURER’S MANUALS
AND PROCEDURES MUST BE FOLLOWED
BECAUSE THEY MAY CONTAIN ISSUES
VITAL TO AIRCRAFT SAFETY THAT ARE
NOT CONTAINED IN THIS MANUAL OR THE
HARTZELL PROPELLER INC. OVERHAUL
MANUAL 157 (61-10-57).
WARNING 3: MAKE SURE THE SLING IS RATED UP
TO 800 LBS (363 KG) TO SUPPORT THE
WEIGHT OF THE PROPELLER ASSEMBLY
DURING REMOVAL.
(4) Cut and remove the safety wire or safety cable on the
propeller mounting nuts.
(5) Support the propeller assembly with a sling.
(a) Supporting the propeller with a sling may be delayed
until all but two mounting bolts and washers have
been removed to permit rotating the propeller for
ease of nut removal.
(b) If the propeller will be reinstalled and it has
been dynamically balanced, make an identifying
mark on the propeller hub and a matching mark on
the engine flange to make sure of proper orientation
during re-installation to prevent dynamic imbalance.
