THRUSH AIRCRAFT INC - MODEL S2R-G10
AIRPLANE MAINTENANCE MANUAL
* NOTE *
Mark propeller hub flange and the
engine shaft flange so that the
propeller can be reinstalled in its
original position. This will prevent
disturbing the propeller/engine
combination dynamic balancing if
the same propeller is to be
reinstalled.
4-9
d. Remove the safety wire from the
propeller mounting bolts. Using a box
head wrench, remove the eight bolts
securing the propeller in place and with
a suitable crane hoist and sling,
remove the propeller from the airplane.
PROPELLER INSTALLATION –
Hartzell
a. With a suitable crane hoist and sling,
carefully move the propeller assembly
to the aircraft engine mounting flange.
b. Make sure engine flange and propeller
flange are clean and free of burrs.
c. Place new P/N C-3317-230 “O” ring on
engine flange.
d. Install the propeller on the engine by
inserting the two dowel pins on the
propeller flange in the appropriate
holes on the propeller shaft flange.
*NOTE*
The propeller will fit on the
engine in two positions, 180º
apart from each other. Either
position is permissible to use.
If the same propeller is being
reinstalled, install in the
original position as previously
marked. This will prevent
disturbing the propeller/
engine combination dynamic
balancing.
e. After assuring that complete and true
surface contact between the flanges
has been established, apply (MIL-
PRE-83483, Hartzell P/N A-3338-1 or
latest upgrade) antiseize compound to
mounting bolt threads and washer
surfaces (and remainder of bolts if
desired). For the HC-B4TN-5NL
propeller install eight (8) P/N B-3339
bolts and eight (8) A-2048-2 washers
through engine flange into the
propeller flange.
WARNING
CHAMFER OF WASHER
MUST FACE BOLT HEAD ON
INSTALLATION.
f. Using (Hartzell P/N AST-2877) special
torque adapter and a standard torque
wrench, torque all eight bolts
according to instructions as outlined in
the latest edition of Hartzell Propeller
Inc. Owner’s Manual and Log Book
No. 139 to a final torque of 100-105 ft.
lbs. wet (1200-1260 in. lbs. wet.).
g. Safety all mounting bolts in an
airworthy manner with .032” (0.81 mm)
minimum diameter stainless steel
safety wire. (Two bolts per safety).
h. Procedure for reinstallation of piston
“dome” nut (if applicable).
1. Following the installation of the
propeller to engine, use a breaker
bar and a one-inch deep well socket
to hold the pitch change rod.
2. Using a 1 13/16-inch crowfoot
wrench standard torque wrench,
torque the A-880-2 piston nut to
120-ft. lbs. (1440-in. lbs.).
i. Install beta tube (P/N 866533-3) lubed
with engine oil. Screw into the
housing approximately .25 inch. Do
install lock bolt at this time. (See
Propeller Adjustments in this section
for pertinent details).
HARTZELL ADJUSTMENTS
Perform propeller checks and adjustments
only after the aircraft engine controls have
been fully rigged to their correct positions,
Effective: 03/26/2010 Page
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