Propeller Owner's Manual
136
TESTING AND TROUBLESHOOTING
61-00-36
Page 4-5
Rev. 2 Feb/17
E. 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 down the
aircraft.
(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.
(6) Slowly advance the governor RPM control lever until the
engine speed stabilizes.
(a) If engine speed stabilizes at the maximum static
RPM specified by the TC or STC holder while at
maximum power, then the low pitch stop is set
correctly.
(b) If engine speed stabilizes above or below the TC or
STC specified maximum RPM, the low pitch stop
may require adjustment. Refer to the Maintenance
Practices chapter of this manual.
(7) Stop the engine.
(8) Return the governor Maximum RPM Stop to the original
position, or adjust the governor to the rated RPM with
the Maximum RPM Stop screw.
(a) If the governor is adjusted to the rated RPM with the
maximum RPM stop screw, hold the maximum RPM
stop screw in place and torque the maximum RPM
stop locking nut in accordance with Table 3-1, Torque
Table.
