Piper COMANCHE PA-24-180 Service Manual page 415

PIPER COMANCHE SERVICE MANUAL
d. After filling with preservative oil, the injector should be protected from dus and dirt and given
such protection against moisture a climatic conditions at the point of storage require. In most cares,
storing the unit in a dry am 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 preservaive oil
2.
Pack in a durtproof continer wrap the conainer with moisture and vapor-proof material and
seal. Pick the wrapped unit in a suitable shipping cae. Pack a one-half pound bag of silica gel crystals in the
dustproof container with injector. The bag-must iiot touch the injector.
CAUTION
Extreme caution should be exercised when handling or working around
the injector to prevent oil or fuel from entering the air sections of the
injector. As explained previously, damage to the air diaphragm will
result. Fluid can easily enter the air secion of the injector through the
impact tubes or the annular groove around the venturi. For this reason.
a protective plate should be installed on the scoop mountng flange
when performing routine maintenance on the engine, such s washing
down the engine and air scoop, servicing the air filter (surplus oil on the
element), or when injecting preservative into the engine prior to storing
or shipping.
7B-29. 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 straner assembly and reinstall.
b. Inect 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.
7B-30. Insallation Of Fuel Injector.
a.
Install fuel injector with gasket on mounting pad.
b. Install air box bracket on the two lower injector mounting studs and secure bracket and injector
unut with washers, nuts and pal locknuts.
c. Connect fuel lines to fuel injector unit.
d. Connect throttle and mixture control cables to control arms and adjust per paragraph 7B-31.
e. Inscall aur box clamp assembly and back plate on fuel injector inlet.
f.
Secure back plate co support bracket and clamp assembly with screws and safety.
g. Secure camp at the injector inlet with 2 bolts, washers, nuts, and cotter pins.
h. Install filter and air box on back plate and secure with cnmloc fasteners.
i.
Connect and secure air intake hose and drain. if removed.
j.
Install bottom cowling.
POWER PLANT
ISSUED: 8/18172
2 F9