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 TM 55-1905-220-14-4
3-9.4. WATER TEMPERATURE SWITCH - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
Testing (Cont)
3. Heat
a. Cap (3)
Remove.
exchanger
b. Thermom-
Insert in heat exchanger.
eter (4)
4. Engine
a. Thermom-
a. Operate at rated speed
eter (4)
and under enough load
to raise the water
temperature gradually
until the thermometer
reads 205 5 (96.1
F
2.7 ).
C
b. Engine
b. Record the temperature.
tempera-
ture
gage.
c. Water
c. Check that switch is
temper-
activated.
ature
alarm
switch
5. Engine
a. Thermom-
Remove.
eter (4)
b. Cap (3)
Replace.
3-393
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