Piper Comanche PA-24 Service Manual page 423

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PIPER COMANCHE SERVICE MANUAL
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~IGURE 7-4. WOOOWARO PROPELLER GOVERNOR AOJUSTMENT POINTS
7·19. Adj......,...t Of PropeUe
Go ......... (Woodwud) (Refer to Figure 7-4.)
a. Swt the engme in accordance with the directions given in Owner', Opcn.ting Manual and aUow ro
warm up.
b. Push the "PROPELLER" cockpit control ~ far forward u it
will
go. AI mis position the governor
'Peed adjusting controll ... r
will
be against the hi-rpm fme adjusting screw.
c. Observe mgin. speed. Adjust me governor speed by means of me fmc adjusanent screw for 2700
rpm. To do mis, release the fur.ncrs and lift m. left side engine cowung. R.I • ..., the speed control lev.r
clamp
screw
(4) iLDd
move the lever relative to the cover scrnrions. One serration movement in a. clockwise
direction produces a decrease in speed of 100 rpm: on. scrntion counter-clockwise increases the 'Peed 100
rpm. On. revolution of the IU-rpm fme adjustment ~ in a clockwise direction decre:ucs engine speed 2S
rpm, countcr-clockwise roration increases .ngine 'Peed 2S rpm, for each revolution of th. screw.
d. After terring m •• ngin. rpm at 2700, righten th. control lev .. clamping screw. and run Ih •
.. IHocking nut on the fme adjustm.nt screw against th. stOp ring proj.ction. Then saf.ty·wire th. head of
the screw to the projcc;tion.
•. With Ihe high RPM adjustment complet.. the control system should b. adjust.d so that the
governor control ann will contact the high RPM stop when the cockpit control
is
062 of an inch from
its
full forward StOp. To adjust the control travel. disconnect the conttol cable end from the gO\'ernor conuol
ann. loosen the cable end iam nut and rocate the end to obtain the desired control clearance. R~connec,; [he
cable end and tighten jam nut.
f.
[t is
usuall~'
only necessary
[0
adjust [he high RPM setting of [he governor control system. as ::he
action automatically u.kcs care of the pMitive high pitch setting.
g. Fasten [he cowling on both sides.
2 A21
POWER PLANT
ISSUED: 8/18172