TM 55-1520-240-23-3
4-14
PERFORM ENGINE VIBRATION TEST
4-14
INITIAL SETUP
Applicable Configurations:
Without 74
Tools:
Powerplant Repairer’s Tool Kit, NSN
5180-00-323-4944
Vibration Mounting Kit, NSN 4920-00-879-0331
Electrical Power Cable Assembly
Torque Wrench, 30 to 150 Inch-Pounds
Stopwatch
AC Power Supply, 115 Volts, 400 Hz
Adapter (APP E-1)
Materials:
Tape (E399)
Parts:
Keywashers, Bolts
Personnel Required:
Aircraft Powerplant Repairer
Inspector
Army Rotary-Wing Aviator (2)
References:
TM 55-1520-240-10
TM 55-4920-243-15
Task 1-36
Task 2-2
Task 4-49
Task 4-50
Equipment Condition:
Battery Connected (Task 1-39)
Electrical Power Off
Engine Work Platform Open (Task 2-2)
Engine Access Cover Open (Task 4-49)
NOTE
Procedure is same to perform engine
vibration test on No. 1 or No. 2 engine
except as noted. No. 1 engine is
shown here.
1.
Prepare test set for use (TM 55-4920-243-15).
2.
Disconnect two cables (1 and 2) from meter (3).
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