Piper PA-24 Comanche Service Manual page 440

PIPER COMANCHE SERVice MANUAL
1002.
FIGURE 7C·1. PROPELLER INSTALLATION
.,
I.
'~'III1&.
Z.
~.O~,~~&
••
~.O,
J. ~OW ~'TCM "OJlI'T"'IIT
... ~OCK "liT
t.
I.''''''
"~111'
•• ~lIT
T. ,'UO
I.
"O,,~
..,..
t.
"0" .,", n,,~
'0.
'~'II"'"
-a"'." ••
'.0
r r , , .... ,., • ., •• ",.
u ...
•
•
7C·10. Clcaninl.lnlpeCtion And Repair Of PropdJcr. (Refer to FiJUte 7C·2.)
a. Check for oil and
rrcue
leaks.
b. Clean the spinner. propeller hub and blades with a non-eorrosivc solvent.
c. Inspect the hub partS for cracks.
d. Steel hub puts should not be permiacd to euse.
Usc
duminum paint to touch up.
if
necessary. or
replace durin, overhaul.
e. Check aJl visible partS for wear and safety.
f.
Check blades to determine whether they tum freel)' on the hub pivot rube. This can be done by
!'ocking the blades back and forth throulh the slitht freedom allowed by the pitch change mechanism. If
they appear tight and are properly lubricated. the propeller should be disassembled by an authorized
Service Center.
g. Inspect blades for damage or cncks. Sicks in leading edges of blades should be filed out and ail
edges rounded. as cracks somet1D'les
start
from
Ncb
places. Usc fine emery cloth for finishing.
h. It
IS
recommended tnat for severe
dam• .
internal
repairs
and replacement of partS. the propeller
should be refcned to the
~anufacturer
or a Certified Repair Station.
i. Grease blade hub through Ink finint. Remove one of the cwo fittings for each prceeller blade.
,uternate the next time. Apply grease through the zerit fittll\! until fresh p-ease appesn at the fimn, hole of
the removed fitting. Cue should be taken to avoid blOWing OUt hub gaskets.
POWER PLANT
ISSUED: 8/18/72
2
812
•