Piper Comanche PA-24 Service Manual page 636

PIPER COMANCHE SERVICE MANUAL
roUer or bl= iJlatnllll8ll1. roll or press the patch 10 !be ce_led are.
aad
roU or press il down
• half-illch 10 ... iach acr .... at • tima so ..
!lOt
10 trap
air
bel_ patch ... d ceU. Lay a
S()'
powul shot bel over
patch which is prolected by a piece of Holl8Ad Cloth 10 preYeD! slickilli.
Weighl sh."lId 1101 be
I'BIII",,"
for 6 hOlllll.
7. Seal coat ed .. of patch
1/2
ilIch ... ith OIIe co. of U.S. Rubber Co. 3230 or MilInesota
MilIilIl Co.
EC~78
C .... eol and aU .... the ce ...... llo dry thorouably.
b. lDside of CeU.
1. After the d_led are. h .. beell patched
011
the outside of Ihe cell ... d the repair al-
lowed 10 sl ... d • millilllum of 6 hours. the ceU is thell re.dy 10 h""e Ihe p.tch applied
011
the
ilIside of Ihe ceU.
2. Liablly ODd thoroughly huff a piece of cured U.S. Rubber Co. 5200/87 IIYIOll sandwich
material 1 .... ellough 10 cover dama .. al leaal 2 iach .. frca CUI ill .IIY direclioo. Wash buffing
dusl off palch with Methyl Elhyl Kel .... solutiOll (U .5. Rubber Co. 3339).
3. CemeD! buffed side of patch ... ith IWo coalS of black rabbet cemelll. U.S. Rubber Co.
3230 or Minnesota MilIilIl Co.
EC~78,
ADd aUow each coal 10 dry 10 10 IS millUl".
4. Buff cell . . . 10 he palched lightly ODd thorou&hly ... ith fille emery cloth and then .... h
off buffilll dUSI .. ith Methyl Ethyl Kelaae solllliOll (U
.5.
Rubber Co. 3339).
5. Coal huffed .... "ilh two coals of black rubber cemeD!, U.S. Rubber Co. 3230 or MiMe-
sOIa MilIilIl Co. EC~78. and aUow each coal 10 dry 10 to IS minute •.
6.
Freshen cemenled area of patch ad cemented .... of ceU ... ith Metbyl Ethyl Ketone
soluticxl (U.S. Rubber Co. 3339).
7. While still tseky, .pply edge of p.tch to ed .. of cemellted are •• celllerillg palch over
cut ill cell. With. roUer or blunl iIlstrument, roll or press the p.lch 10 the cemenled area
011
the
cell. Hold perl of patch off the cemenled .... and roU or
~ess
it down • half-inch to an inch at
a time so .. not 10 trap .ir belween patch ODd ceU. Apply 5().pound shot b.g to rep.ired .... a and
do not dislurb for 6 hours.
8. Seal coat patch and 1/2 iIlch from edge of patch .. ith two coats of U.S. Rubber Co.
323 0 or MinDesot. MilIiIlC Co.
EC~78
CellleDl. AUow the firsl coat to dry IS millUles or more and
the
second
coal to dry
12
hours
or
more so th.1 wben the ceU is ill its folded or original poaition
the p.tch ... a will nOl Slick to other
are .. of the cell. Wipa palch and cemented area lightly with
number 10 oil.
c. Scuffed Fabric.
1. Buff
area
surroundillg scuffed fabric.
2. W.sh buffilll dust from area "ith 3339 solution.
3. Apply two coats of U.S. Rubber Co. 3230 or Millnesola Mining Co. EC-6i8 cement to
the buffed area, aUowille 10 millutes dryillg time between co.ts.
8-12. Fuel Selector V.l.e ••
8-13.
R ......
al
01
Fuel Selector V.i.e •• Removal of the fuel valve on aU models of Comanche
aircraft are basically the same.
•. Drain fuel from :he fuel cells.
b. Remove the fuel selector valve handle.
c. Remove the screws securing the fuel valve protector plate and remove plate.
If
plate is
wired with selector ,witches. brine the plate straight up. beinl careful not to damage the switches
FUEL
SYSTEM
ISSUED: 8118172
2 J2