Propeller Owner’s Manual
139
INSTALLATION AND REMOVAL
61-00-39
Page 3-55
Rev. 17 Apr/20
CAUTION
:
MAKE SURE OF PROPER THREAD
ENGAGEMENT FOR THE SCREWS IN
THE NUTPLATES. APPROXIMATELY
1 TO 1 1/2 THREADS MUST EXTEND
PAST THE BULKHEAD NUTPLATES.
TO AVOID DAMAGING THE AIRCRAFT
COWLING, THE SCREWS MUST NOT
EXTEND MORE THAN THREE THREADS
PAST THE BULKHEAD NUTPLATES.
(2) Attach the spinner dome to the spinner bulkhead with
the supplied screws and washers. Refer to Table 3-3.
(a) Install a screw in the hole(s) centered between each
two adjacent blade cutouts.
1 If the centerline between the adjacent blade
cutouts does not align with a mounting hole,
install screws in the two holes closest to the
centerline.
CAUTION:
BE SURE THE SCREWS DRAW THE
SPINNER DOME TIGHT TO THE
BULKHEAD.
(b) Tighten the screws until snug, then turn an additional
1/8 rotation to achieve an approximate torque value
of 20-30 In-Lbs. (2.3-3.3 N•m).
CAUTION:
IN THE FOLLOWING STEP, TIGHTEN
EACH SCREW BEFORE INSTALLING
THE NEXT SCREW.
(c) Working from the screw(s) previously installed at
the centerline toward the blade cutouts, install the
remaining screws.
1 Tighten each screw until snug, then turn an
additional 1/8 rotation to achieve an approximate
torque value of 20-30 In-Lbs. (2.3-3.3 N•m)
before installing the next screw.
6. Post-Installation Checks
A. Procedure
(1) Refer to the airframe manufacturer’s instructions for
post-installation checks.
(2) Perform a maximum RPM (Static) hydraulic low
pitch stop check in accordance with the Testing and
Troubleshooting chapter of this manual.
