Section VIII. ENGINE COOLING SYSTEM
98. General
(3) Remove the fan and water pump from the
The engine cooling system consists of a fan, guard,
engine as instructed on figure 48.
radiator and shroud, thermostats and housing, water
b. Cleaning and Inspection. Clean and inspect the
manifolds, water pump, and suitable hoses, lines, and
fan and water pump for damage, Replace as necessary.
clamps. The water pump takes the water from the
c. Installation.
bottom of the radiator and circulates the water through
(1) Install the fan and water pump on the
the engine block for cooling the engine. The water
engine in reverse of the instructions on
temperature is controlled by the thermostats to keep the
engine at operating temperature.
(2) Install the fan belts (para. 100).
The water is cooled by the fan pulling air through the
(3) Fill the cooling system (TM 54-3820205-
radiator fins as the water passes through the radiator.
10/1).
102. Radiator Shroud
99. Fan Guard
a. Removal.
a. Removal. Remove the fan guard from the
shroud as instructed on figure 47.
(1) Drain cooling system (TM 5-3820205-
10/1).
b. Cleaning and Inspection. Clean and inspect the
fan guard for any damage.
Replace as
(2) Remove the engine hood (para. 94).
necessary.
(3) Remove the radiator shroud from the
c. Installation. Install the fan guard on the shroud
housing as instructed on figure 49.
in reverse of the instructions on figure 47.
b. Cleaning and Inspection. Clean and inspect the
radiator shroud. Replace as necessary.
100. Fan Belts
c. Installation.
a. Removal.
(1) Install the radiator shroud on the housing
(1) Remove the fan guard (para. 99).
in reverse of the instructions on figure 49.
(2) Remove the fan belts from the fan pulley
(2) Install the fan (para. 101).
as instructed on figure 47.
(3) Install the engine hood (para. 94).
b. Cleaning and Inspection. Clean and inspect the
(4) Fill the cooling system (TM 65820205-
fan belts for fraying or any other damage. Replace as
10/1),
necessary.
103. Thermostats and Housing
c. Installation.
a. Removal.
(1) Install the fan belts on the fan pulley in
(1) Drain cooling system (TM 564820205-
reverse of the instructions on figure 47.
10/1),.
(2) Install the fan guard (para. 99).
(2) Remove the thermostats and housing
d. Adjustment. Adjust the fan belts (TM 5-4820-
from the engine as instructed on figure
205-10/1).
b. Cleaning and Inspection. Clean and inspect the
101. Fan and Water Pump
thermostats and housing. Replace if necessary.
a. Removal.
c. Test
Place the thermostat and suitable
(1) Drain the cooling system (TM 53820-205-
thermometer in a pan or pail of water and
10/1).
(2) Remove fan belts (para. 100).
AGO 8157A 64