TM 55-1520-240-23-1
1-92
INSPECTION (Continued)
1-92
REF.
NO.
AREA
NO.
FREQUENCY
INSPECTION REQUIREMENTS
16.
2, 7
WHENEVER SKIS ARE INSTALLED:
a. Daily — Axial shaft attaching points, trailing wheel and attaching points, and
springs actuator attaching points for security.
b. Every 24 Hours — Ski (around wheel well) for cracks and delaminations.
Bungee cords and guide lines for condition and security, lubricate 3 fittings
per ski with grease (E190).
17.
4, 5
WHEN AN ENGINE IS DROPPED DURING HANDLING:
Perform an engine dropped inspection. Refer to TM 55-2840-254-23.
18.
DELETED
19.
4, 5
WHEN ENGINE OIL CONSUMPTION EXCEEDS 2 QUARTS PER HOUR:
Perform a hot end inspection and a high oil consumption check at the next
inspection phase. Refer to TM 55-2840-254-23.
20.
4, 5
WHEN AN ENGINE IS SUBJECTED TO SUDDEN STOPPAGE OR A SUDDEN REDUCTION IN RPM:
Perform an over-torque inspection. Refer to TM 55-2840-254-23.
21.
4, 5
WHEN AN ENGINE OVERTEMPERATURE IS EXPERIENCED AS SPECIFIED IN TM 1-1520-240-10.
Perform a hot end inspection. Refer to TM 55-2840-254-23.
22.
4, 5
WHEN AN N2 OVERSPEEDS AS SPECIFIED IN TM 1-1520-240-10:
a. Compute to find if actual overspeed occurred (Task 4-7).
b. If overspeed occurred, perform an overspeed inspection. Refer to TM
55-2840-254-23.
23.
4, 5
WHEN AN ENGINE COMPRESSOR STALL (SURGE) IS EXPERIENCED:
Perform compressor stall inspection. Refer to TM 55-2840-254-23.
23.1
9
WHENEVER A DIGITAL ENGINE CONTROL UNIT (DECU) IS REPLACED:
Download and print the old DECU and update the new DECU with the
total current engine operating hours and the total current cycles for the 3rd
compressor disk, 1st turbine disk, 2nd turbine disk, integral shaft assy (3rd
turbine disk), 4th turbine disk, 1st GP sealing plate, and GP spacer. See TM
1-2840-265-23 for instructions on downloading and resetting the DECU.
Change 3
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