TM 5-4320-300-14
Table 4-2. Organizational Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
allow it to touch the bottom. Agitate
the water to maintain an even
temperature throughout the container.
As the water is heated, the thermostat
should begin to open when the
temperature reaches 167-172°F (75-
78°C). The opening temperature is
stamped on the thermostat. The
thermostat should be fully open at
approximately 190-192° F (88-89° C).
If thermostat is faulty, replace it. Remove any old gasket material from gasket surface of thermostat
housing and the water outlet elbow. Install new gasket and position water outlet elbow. Install
mounting bolts and lockwashers. Tighten bolts 23-26 ft-lbs (31-35 N•m). Position upper radiator
hose on water outlet elbow and tighten hose clamp snugly. Pour collected coolant back into radiator
and install radiator cap. Start engine and check for leaks. If leaks appear, tighten hose clamp on
water outlet elbow.
c. Check the bleed hole in the thermostat housing.
Clean bleed hole.
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