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IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
100-Hour or Annual Engine Inspection Checklist for IO-390-D Series Engines (Cont.)
Inspection Item
Fuel System
Complete the Fuel System
Inspection.
CAUTION
DO NOT ATTEMPT TO REPAIR A DAMAGED FUEL LINE. REPLACE
ANY FUEL LINE THAT IS CRACKED, DENTED, OR KINKED; CRACKS
CAN DEVELOP AT THE SIDE OF SHARP BENDS OR KINKS.
Examine fuel lines for correct
routing, damage, leaks, dents,
pits, nicks, kinks, stains caused
by fuel leaks, cracks, brittleness,
or chafing.
Make sure fuel lines are held
securely in place using clamps
with cushions.
Examine the fuel injectors for
leaks and correct installation.
Examine the fuel injector nozzle
line attachments for secure
connection.
Examine each fuel line between
the fuel manifold and the nozzles
for any evidence of physical
damage and for stains caused by
fuel leakage.
© 2020 Avco Corporation. All Rights Reserved
March 2020
Comments
Refer to the section "Fuel
System Inspection" procedure in
Chapter 73-10.
Refer to the "Fuel Line
Inspection" section in Chapter
73-10.
If no clamps are attached to the
fuel line that was in service,
replace the fuel line per
instructions in Chapter 73-10.
If cushions on clamps are
deteriorated or missing, replace
the clamps.
If the clamps are loose, replace
the fuel line.
NOTICE: Plastic tie straps are
not an acceptable substitute for
clamps.
Refer to the section "Fuel
Injector Leak Check" in Chapter
73-10.
Tighten any loose connections
per torque values in the latest
revision of the Service Table of
Limits - SSP-1776
Replace damaged or worn fuel
lines.*
Results/Notes
Fuel Line 1
Fuel Line 2
Fuel Line 3
Fuel Line 4
Page 25
Done
05-20
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