Section XIX.1 INSPECT PRIMARY AND SECONDARY FUEL NOZZLE ASSEMBLIES
4-19.1 INSPECT PRIMARY AND SECONDARY FUEL NOZZLE ASSEMBLIES (AVIM)
INITIAL SETUP
Tools:
Aircraft Inspection Tool Kit (T49)
Personnel Required:
68B Aircraft Powerplant Repairer
General Safety Instructions:
Equipment Conditions:
Compressed air is dangerous
Fuel Nozzle Assemblies Removed From APU
when directed toward yourself
or another person.
The air-
stream or material blown by
the airstream can cause inju-
ry, particularly to the eyes
and face.
Use goggles to pro-
tect eyes and face.
Do not
exceed 30 PSI. Do not direct
airstream toward yourself or
another person.
NOTE
Visually inspect fuel nozzle
assemblies as follows.
1.
Inspect fuel inlet fitting (1) for
stripped or peened threads. No
stripped or peened threads, allowed.
2.
Inject filtered air through fuel
inlet fitting (1) of primary and
secondary fuel nozzle assemblies to
check for obstructions.
No obstruc-
tions allowed.
3.
Inspect mounting flange (2) for
burrs or nicks.
No burrs or nicks
allowed.
4.
Inspect primary and secondary fuel
nozzle assemblies passage (3) for
blockage or carbon deposits. No
blockage or carbon deposits allowed.
FOLLOW-ON MAINTENANCE: None.
Change 1
4-53
