Page 4-3
Rev. 1 Jun/11
TESTING AND TROUBLESHOOTING
61-00-75
Propeller Owner's Manual
175
1. Operational Tests
Following propeller installation, and before flight, the propeller
hydraulic system must be purged of air and proper operation
verified.
A. Initial Run-Up
(1) Perform engine start and warm-up in accordance with
the Pilot's Operating Handbook (POH).
(2) Cycle the propeller control throughout its operating pitch
range from low to high (or as directed by the POH).
(3) Repeat this procedure three times, or as necessary,
to purge air from the propeller hydraulic system and to
introduce warmed oil to the cylinder.
NOTE
: Pitch change response on the first operation
from low to high blade angle may be slow,
but should speed up on the second and third
cycles.
(4) Verify proper operation from low pitch to high pitch and
throughout operating range.
(5) Shut down the engine in accordance with the POH.
NOTE:
Air trapped in the propeller hydraulic system
will cause the pitch control to be imprecise and
may result in propeller surging.
B. Static RPM Check
NOTE:
This operational check should be performed after
installation, maintenance, or propeller adjustment.
CAUTION:
A CALIBRATED TACHOMETER MUST
BE USED TO MAKE SURE OF THE
ACCURACY OF THE RPM CHECK.
(1) Set the brakes and chock the aircraft or tie aircraft down.
(2) Back the governor Maximum RPM Stop out one turn.
(3) Start the engine.
(4) Advance the propeller control lever to MAX (max RPM),
then retard the control lever one inch (25.4 mm).
(5) SLOWLY advance the throttle to maximum manifold
pressure.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331