TM 1-2840-252-23-2
4-47
INITIAL SETUP
Thermocouple Harness Assemblies Removed
Applicable Configurations:
Third Turbine Nozzle and Support Removed (Task
All
No 4 and 5 Bearing Package Removed (Task
Tools:
Dry, Compressed Air Source
No 4 and 5 Bearing Oil Tubes Removed (Task
Fiber Brush
Goggles
Fourth Stage Power Turbine Nozzle Removed
Materials:
Dry Cleaning Solvent (El 9)
Gloves (E24)
General Safety Instructions:
WARNING
Personnel Required:
Dry cleaning solvent (E19) is flammable
Aircraft Powerplant Repairer
and toxic. It can irritate skin and cause
Equipment Condition:
burns. Use only in well-ventilated area,
Off Engine Task
away from heat and open flames. In case
Engine System Drained (Task 1-69)
of contact, immediately flush skin or
Combustion Section and Power Turbine Removed
eyes with water for at least 5 minutes
1
.
Get medical attention for eyes.
Combustion Section and Power Turbine Disas-
sembled (Task 3-6)
1. Clean fourth stage power turbine nozzle (1)
a. Wear gloves (E24) Clean nozzle with dry
cleaning solvent (E19)
b. Remove contaminants by scrubbing with a fiber
brush
WARNING
When using compressed air for cleaning, use
approved protective equipment for eyes and face. Do
not use more than30 psig air pressure. Do not direct
air toward yourself or another person. Failure to
comply could result in injury to eyes or skin. In case
of injury, get medical attention.
c. Wear goggles Blow dry nozzle (1),using clean,
dry, compressed air.
FOLLOW-ON MAINTENANCE
Inspect Fourth Stage Power Turbine Nozzle (Task
END OF TASK
