TM 9-2320-273-20
SENDING UNITS, SWITCHING DEVICES, AND WINTERIZATION KIT.
5-73. WATER TEMPERATURE SWITCH MAINTENANCE (Continued).
LOCATION/ITEM
ACTION
REMARKS
A. REMOVAL (Continued).
3. Water temperature
Remove.
switch (5).
B. INSTALLATION.
4. Water temperature
switch (5).
5. Wire (3).
6. Lockwasher (2) and
nut (1).
Coat threads with Iiquid
teflon. Install and
tighten.
Place on terminal (4).
Install on terminal
(4) and tighten.
C.
OPERATIONAL CHECK.
7. Engine.
Start (refer to TM 9-2320-273-10).
Monitor WATER TEMP gage, switch
shouId close and activate indicator
lamp when coolant reaches 225°F
(107°C) .
Let radiator cool before removing cap. Remove
radiator cap in two steps. First, place a thick
cloth over the cap and slowly rotate cap left to
its first stop; pause, and let pressure escape from
the cooling system. Then rotate cap farther left
until you can remove it. Failure to follow this pro-
cedure can result in serious burns.
NOTE
Follow-on maintenance required: Fill radiator per
paragraph 4-42.
5-264
