Piper Comanche PA-24 Service Manual page 493

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PIPER COMANCHE SERVICE MANUAL
CAUTION
Do not exceed the a.bove air pressure as internal c:larnqe to the injector
may result.
d. Amr
filling
with preserv.tive oil. the injectorshouid be pro,ected from dust IDd dirt and "ven
such protection ap1nst moisture as climlDe conditions
lot
the point of storq:e requlR. In molt cases,
storing the unit in a dry area will be sufficient.
e. If the unit is
'0
be stored near or shipped over salt water. the foUowing pr.cautions should be
observed,
1. Spray the exterior of the inj.c:ror with an approved p ..... rv.tiv. oil.
2. Pack in a dustproof conca.iner. wrap the container
with
moisture and vapor-proof material and
seal. Pad the wrapped unit
III
a suiuble shippillg case. Pack a one·half pound bag of silia gel
crystals In the
dustproof container with injector. The bag must not touch the injeCtOr.
CAtrrlON
Extreme caution should be exercised when handling or working around
the injector to prevent oil or fuel from entering the
aU'
sections of the
inj.ctor. As explain.d previously. damage to the air diaphragm wi!!
result. FlUid can n.sdy enter the
air
section of the injector throUfh the
impact tubes or the &nnuW' groove uound the venturi. For this reason,
a proterove plat. should be installed on the scoop mounang flange
.... hen performing routine maintcn&nc:e on the engine, such as
washing
down the engine and.
air
scoop. servu:mg the
1U'
mter (surplus oil on the
element). or when inJecting preservlnve
lIltO
the engme pnor to storing
or shipping.
7A·~9
Preparation Of Fuel Injector For Sen-ice. Fuel Injectors that hav'e been prepared for
stor~e
should
undergo the followU\I procedures before beUlS placed in service.
a. Rem.o\·e and clean the fuel Inlet stniner assembly and reinsu.U.
b. Inlect clean fuel into the fuel inlet connection with the fuel outlets unc:3.pped unul
cle~
fuel nows
irom tile outlets. Do not exceed 1 S psi
inlet pressure.
7 A -60. Installation Of Fuel Injectot.
a. Secure air box with gasket to the mjector using cap bolts and washcn. Safety WIth lock WIre.
b. Insu.ll gasket and mjector unit on
~he
bottom of the sump and secure with washers. nuts and pal
locknuts.
c. Connect the fuel lines to the mjcctor unit.
d. Connect the throtde and mixtUre conttol cables at the injector urut.
c. Install cngine cowling per p:3.ra.gnph 7A·j or 7A·10
2 015
POWER PLANT
ISSUED: 8118n2