TM 55-2840-254-23
4-54 CLEAN SECOND TURBINE DISC ASSEMBLY (AVIM)
4-54
INITIAL SETUP
General Safety Instructions:
Applicable Configurations:
All
Tools:
Powerplant Mechanic’s Tool Kit,
NSN 5180-00-323-4944
Goggles
Compressed Air Source
Materials:
Gloves (E20)
Methyl Ethyl Ketone (E36)
Personnel Required:
68B10 Aircraft Powerplant Repairer
Methyl ethyl ketone (E36) is flammable
and toxic. It can irritate skin and cause
burns. Use only in well-ventilated area,
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.
Equipment Condition:
Off Engine Task
Engine Oil System Drained (Task 1-75)
Combustion Section and Power Turbine
Removed (Task 3-5)
Second Turbine Disc Assembly Removed
(Task 4-53)
When using compressed air for cleaning,
use approved protective equipment for
eyes and face. Do not use more than
30 psig air pressure. Do not direct air
toward yourself or another person. Fail-
ure to comply could result in injury to
eyes or skin. In case of injury, get medi-
cal attention.
1. Clean second turbine disc assembly (1) as fol-
lows:
a. Wear gloves (E20) and goggles. Clean second
turbine disc (1) using methyl ethyl ketone
(E36) and brush.
In following step, avoid directing air at
blade air cooling passages. Failure to
comply may cause blockage of blade
air cooling passages.
b. Blow dry second turbine disc assembly (1),
using clean, dry compressed air.
GO TO NEXT PAGE
4-320
