Piper COMANCHE PA-24-180 Service Manual page 350

PIPER COMANCHE SERVICE MANUAL
FIGURE 7A-5. WOODWARD PROPELLER GOVERNOR ADJUSTMENT POINTS
7A-27. Adjusnment Of Propeller Governor. (Hfnll) (Refer to Figure 7A-6.)
a Release the faasenen and lift the left side engine cowling.
b. Scar the engine in accordance with the directions given in the Owner's Flight Manual and allow to
warm up.
c. Push the "PROPELLER" cockpit control as far forward as it will go. At this position the governor
speed adjusung control lever will he agains the hi-rpm fine adjusting screw
d. Observe engine speed. Adjust the governor by means of the fine adjustment screw for 2575 RPM
(PA-24-250) or 2700 RPM (PA-24-260). To do this, loosen the fine adjusment screw locknut and turn the
hi-rpm fine adjustment screw in a clockwise direction co decrease engine speed and a counerclockwise
rotation to increase engine speed. One revolution of the fine adjustment screw increases or decreases the
propeller speed approximately 15 RPM.
e. After sering the governor for high RPM, run the self-locking nut on the fine adjustment screw
against the base projection to lock.
f. Pull the "PROPELLER" cockpit control aft to the low RPM position.
g. Observe engine speed. Set co 1900 RPM (PA-24-250) or 1600 RPM (PA-24-260) either by
threading the fitting at the governor control arm onto 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 increase engine speed.
respectively. It will be necessary, of course, pnor to adjusting, to remove the self-locking nut and
disconnect it from the governor control arm and to release the fitting locknut.
h. Reconnect cable to governor control arm. apply fitting locknut and recheck eneine bv moving
cockpit control in and out of the appropnate setting.
i.
Secure the cowling.
POWER PLANT
ISSUED: 8/18/72
2 C16