Piper Comanche PA-24 Service Manual page 469

•
PIPER COMANCHE SERVICE MANUAL
7A-23. Propeller Govanor.
7A·24. Removal Of Propeller Govanor.
a_
Lift the left side panel of die e"li"" cowling.
b. DISConnect contrOl cable from governor conaol
arm.
c;.
Remove the IOvemor mountinJ stud
DUG.
It will be necessary to raise the governor as the
nuu
ne
being removed before the nues can be completely removed.
d. Remove the mounting guket. If the govemor
is
to be removed for a considerable length of time
and &Dother unit is
DOt
subsaruted. it is advisable to cover the maunan, pad to prevent damag-c caused
b~
foreim matrer.
7A-Z5. Insrallation Of Propeller Governor.
&.
Cle;.n the mounting pad thoroughly making very
Certain
ml[
there ue no
foreIgn
particles
U1
the
r' -
JS
around the drive shaft.
b. Pla.ce the governor maunong gasket in position
with
the raised portion of the screen fa.cing
away
from the eriline.
c.
Ali&n
the splines on the governor sh.aft-with the engine drive and slide the governor in position.
d. Raise: governor off maunang pad cnol.llh to install wuhen md
stut
mounting nuts. Torque nuts
evenly.
c. Connect the conttol cable end to the governor conttol arm.
f. Adjust govemor control per panpaph 7A-26 or 7A-Z7.
7 .... -26. AdjustmGlt Of PropeUcr Governor. (Woodward) (P ... ·24-250) (Refer to Figu ... ; A-;.)
a..
Start the engine
In
accordance with the directlons given in Owner's Operating .\1.an'Ja.l and a.llow to
warm up
b. Push the "PROPELLER" COCKpit control a.s fu forwud as it will 10. At thiS position the governor
speed l.djusting control lever will be against the hi-rpm fine adjusting screw.
c. Observe engine speed. Adjust the governor speed
by
means of the fine J.d,i'Jsonent screw for 2575
rpm. To do thlS. release the fasteners and lift the side engine cowling. Rel,case the speed control lever clam?
screw (.;.) iJld move the lever relative to the cover serrations. Once serration movement in a clockwise
direction produces a. decrease in speed of
100
rpm; one sernrion counter-<:lockw1.se increases the s?eed
100
rpm. One revolueon of the hl-rpm fine adjustment screw in a clockwisc directIon decreases eng-me speed 2S
rpm. counter"'CiocKwise rotation increases engine speed 25 rpm, for each revolution of the screw
d, After setting the engine rpm at 2S7S, tighten the control lever camping screw. and run the
self-locking nut on the fine adjusanent screw agalnst the StOP nng projection. Then saiety-v.·ire the head of
the screw
[0
the projection.
e. Fasten cowling on both Sides.
2 C15
POWER PLANT
ISSUED: 8/18172