TM 55-2840-254-23
4-21 CLEAN THERMOCOUPLE HARNESS ASSEMBLIES (AVIM)
4-21
INITIAL SETUP
Applicable Configurations:
All
Tools:
Powerplant Mechanic’s Tool Kit,
NSN 5180-00-323-4944
Materials:
Dry Cleaning Solvent (E17)
Gloves (E20)
Lint-Free Cloth (E26)
Personnel Required:
68B10 Aircraft Powerplant Repairer
Equipment Condition:
Off Engine Task
Engine Oil System Drained (Task 1-75)
Combustion Section and Power Turbine
Removed (Task 3-5)
Combustion Section and Power Turbine Dis-
assembled (Task 3-6)
Thermocouple Harness Assemblies Removed
(Task 4-20)
General Safety Instructions:
Dry cleaning solvent (E17) is flammable
and toxic. It can irritate skin and cause
burns. Use only in well-ventilated areas,
away from heat and open flame. In case
of contact, immediately flush skin or
eyes with water for at least 15 minutes.
Get medical attention for eyes.
1. Clean thermocouple harness assembly (1) as
follows:
Do not immerse in dry cleaning solvent.
It may cause malfunction of probes or
breakdown of internal wiring insulation.
a. Wear gloves (E20). Wipe clean with lint-free
cloth (E26) dampened in dry cleaning soi-
vent (E17). Use brush to loosen carbon on
probes (2).
b. Wipe dry. Use clean, dry lint-free cloth (E26).
FOLLOW-ON MAINTENANCE:
Inspect Thermocouple Harness Assemblies
(Task 4-22).
END OF TASK
4-102
