TM 5-3810-307-24-2-2
Thermostat - Inspection (8-06)
Visually inspect the thermostat for obvious damage
such as obstructions caused by debris, broken springs,
or stuck or missing vent pins.
The thermostat can be checked for correct operation.
Requirements
Start to open at 83C [181F].
Fully open at 95C [203F].