Preparation Of Fuel Injector For Service; Fuel Injector Installation - Piper PA-24 Comanche Service Manual

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PIPER COMANCHE SERVICE MANUAL
CAL'TtON
Do not exceed the above air pressure u internal aam...,e to cbe injector
may result.
d.
After filling wicb prnervative oil. the injeC'ror shou1cl be protected from dust and din and given
such protection against moisture
as
climatic conditions at cbe point of st0tlle require. In most cases.
storing the unit in a dry
area
will be sufficient.
e. If the unit is to be stored near or shipped over salt water, the followm, prel:&utions should be
observed:
1.
Spray the exterior of the injector with
an approved
preservative oil.
2. Pack in a dustproof container.
WftP
the containCf with moisture and vapor-proof material and
seal.
Pack the wrapped unit In a suiuble shippinB
ease,
Pack a one-half pound baa of silie:!. gcl
aysuls In
the
dustproof container with InJcctor. The baa must not touch the injector.
CAUTION
Extreme caution should
be
exercised when handliftr or worltinl around
the Injector to prevent oil or fucl from entering the air sections of the
injector. As explained previously. 4amate to the air diaphrapn will
result. Fluid can easily
enter
the air section of cbe injector throlllh the
impact tubes or the annular Il'oove around the venturi. For this reason,
a protective plate should be installed on the seoop mountiDJ fIanJC
when perfonnin, routine maintenance on the e"line. such
as
wuhin(
down the engine and air scoop. serviciDJ the air ruter (surplus oil on the
clement). or when injecting preservative intO the eft(ine prior to scoriftl
or Shipping.
iA-S9. Preparation Of Fucllnjector For Service. Fuel Injectors that have been prepared for storlie should
undergo the followmg procedures before being placed in service.
a. Remove and clean the fuei inlet strainer UKmbly and reinstall.
b. Inject clean fuel intO the fuel inlet connection
with
the fuel outlets uncapped until clean fuel flows
from the outlets. Do not exceed
is
psi inlet pressure.
i ..
~~O.
Installation Of FucllnjeC'tor.
I.
Secure lir box with gasket to the injeC'ror using cap bolts and washers. SafetY with lock wire.
b. Install gUKet and injector umt on the bottom of the sump and seC\lfC with wuhers. nuts and
pal
locknuts.
c. Connecr the fuel lines to the injector unit.
d.
Connect the throttle and mixture eenerct cables
at
the injector unit.
e.
Install engine cowlift! pcr pamgnph iA-7 or 7A·l0.
POWER PLANT
ISSUED: 8/18n2
2
015