Piper COMANCHE PA-24-180 Service Manual page 445

PIPER COMANCHE SERVICE MANUAL
. * AD OJUSTI
SCREW
FIGURE 7C-3. PROPELLER GOVERNOR
7C.17 Adjusmnent Of Propellr Governor. (Refer to Figure 7C-3.)
a.
Stat the engine in iccordance with the direcuons given in the Owner's Flight Manual and allow to
warm up.
b.
Push the "PROPELLER" cockpit control as far forward as t will go. Ar this position the governor
speed adusting control lever will be against the hi-rpm fine adjusting screw.
c.
Observe engine speed. Adjust the governor by means of the fine ad!ustment screw for 2700 RPM.
To do this, release the fasteners and lifr the left side engine cowling. Loosen the fine adjustment screw
locknut and urn the hi-rpm fine adjusrment screw in a clockwise direction to decrease engine speed and a
counterclockwise roution
to increase engine speed. One revolution of the fine adjustment screw increases
or decreases the propeller speed approximately 15 RPM.
d.
After serting the governor for high RPM. run the self-locking nut on the fine adjusrment screw
against the base projection to lock.
e.
Pull the "PROPELLER" cockpit control aft to the low RPM position.
f.
Observe engine speed. Set to 1600 RPM eitner by threading the fitting at the governor control arm
into the cable. or by turning it in the direction tending to remove the fitting from the cable, depending on
whether it is required to decrease or mcrease engine speed respectvely It will be necessary, prior to
adjusting to remove the self-locking nut and disconnect it from the governor control arm and to release the
fitting locknut.
g
Reconnect cable to governor control arm. apply fitting locknut and recheck engine bt moving
cockpit control in and out of the appropriate settings.
h Secure the cowling.
POWER PLANT
ISSUED: 8/18/72
2G15