Piper COMANCHE PA-24-180 Service Manual page 373

PIPER COMANCHE SERVICE MANUAL
CAUTION
Do not exceed the above air pressure as internal damage to the injector
may result.
d. After filling with preservaive oil. the injector should be protected from dust and dirt and given
such protection against moisture as climatic conditions at the point of storage require. In most cqases.
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 following precautions should be
observed:
1. Spray the exterior of the injector with an approved preservative oil.
2. Pack in a dustproof container, wrap the conainer with moisture and vapor-proof maenral and
seal. Pack the wrapped unit in a suitable shipping case. Pack a one-half pound bag of silica gel crystals in the
dustproof container with injector. The bag must not touch the injector.
CAUTION
Extreme caution should be exercised when handling or working around
the injector to prevent oil or fuel from entering the ar sections of the
injector. As explained previously, damage to the air diaphragm will
result. Fluid can easily enter the air section of the injector through the
impact tubes or the annular groove around the ventun. For this reason,
a protective plate should be installed on the scoop mounting flange
when performing routine maintenance on the engine. such a washing
down the engine and au scoop. servicing the ar filter (surplus oil on me
element), or when injecting preservatve into the engine pror to storing
or shipping.
7A-59 Preparation Of Fuel Injector For Service. Fuel Injectors that have been prepared for storage should
undergo the following procedures before being placed in service.
a. Remove and clean the fuel inlet struner assembly and reinstall.
b.
Iniect clean fuel into the fuel inlet connection with the fuel outlets uncapped until clean fuel flows
from the outlets. Do not exceed 15 psi inlet pressure.
7A-60. Installation Of Fuel Injector.
a.
Secure aur box with gasket to the injector using cap bolts and washers. Safety with lock wire.
b.
Install gasker and injector unit on :he bottom of the sump and secure with washers, nuts and pal
locknuts.
c.
Connect the fuel lines to the injector unit.
d.
Connect the throttle and mrixure control cables at the injector uut.
e. Install engine cowling per paragrph 7A-7 or 7A-10
POWER PLANT
ISSUED: 8/18/72
2 D15