TM 55-1520-240-23-7
8-2
TEST POWER TURBINE INLET TEMPERATURE (PTIT) INDICATOR
8-2
INITIAL SETUP
Applicable Configurations:
All
Tools:
Electrical Repairers Tool Kit, NSN 5180-00-323-4915
Tester, Exhaust Gas Temperature Model BH112JB-53
Power Supply, 28 VDC
Multimeter
Connector, M83723-75W1407N
Light Indicator, MS25041-4
Lamp, MS25237-327
Wire, No. 20 Insulated
Materials:
Solder (E360)
Personnel Required:
Aircraft Electrician
Inspector
References:
TM 55-1500-323-25
TM 55-4920-401-13&P
Equipment Condition:
Off Helicopter Task
Test Setup
1.
Connect indicator (1) to test setup.
2.
Apply 28 vdc to test setup.
FRICTION TEST
3.
Slowly adjust tester (2) to cause indicator (1) to
read 200ºC. Record indicator reading.
4.
Tap indicator (1). Record indicator reading.
5.
Compare indicator (2) readings from steps 3 and
4. Difference shall be no more than 24ºC.
6.
Repeat steps 3, 4, and 5 at 400ºC, 700ºC, 800ºC,
900ºC, and 1200ºC. Difference shall be no more
than 24ºC at all noted settings.
8-16