TM 55-1520-240-23-3
4-146
ENGINE COMPRESSOR PRESERVATION PROCEDURE
4-146
INITIAL SETUP
Applicable Configurations:
With 74
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Portable Cleaning and Preservation Unit LTCT
23980-01 (T-26)
Materials:
Engine Preservative (E154.1)
Lockwire (E231)
Cloths (E135)
Personnel Required:
Medium Helicopter Repairer
Army Rotary Aviator (2)
Inspector
References:
Vendor Manual for LTCT 23980-01
Equipment Condition:
Engine Work Platform Open (Task 2-2)
Portable Cleaning and Preservation Unit (T-26)
Connected
Task 4-144 or 4-145 Completed
Hydraulic Power On
Electrical Power On
General Safety Instructions:
Allow engine to cool for a minimum of
45 minutes prior to preserving the
engine compressor. Cooling period
is mandatory to prevent warpage of
internal components.
4-482
