TM 5-6100-224-ESC
PROCEDURE
RATINGS
GREEN
AMBER
RED
Item 9.
ENGINE HOURS OF OPERATION
Determine the hours engine has been in
0-7500
7500 or over.
operation since new or overhaul. If hour
meter has been replaced, add hours at
time of replacement to present hour meter
reading for total hours of engine operation
since new or overhaul.
Item 10.
ENVIRONMENTAL SYSTEM, COOLING
Determine if all components are
Both systems
One system
Both systems
operate properly.
inoperative.
inoperative.
Unusual noise
operating properly. Detect any unusual
or vibration.
noise or vibrations that might indicate
damaged or worn parts. Check sight
glass on receivers for refrigerant level
which might indicate leaks in the systems.
Check for restricted air flow through the
Item 11.
Determine if all components are
Systems operate
One system
Both systems
8