TM 5-4320-300-14
Table 4-2. Organizational Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If thermostat is faulty, replace it. Remove any old gasket from gasket surface of thermostat
housing and 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. Check and clean bleed hole in
thermostat housing. 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.
Step 3. Check fan belt tension. Belt tension is correct when belts can be deflected with forefinger
pressure 1/2-3/4 inch (12.7-19.0 mm) at the midpoint between pulleys.
4-65
