TM 9-803 79 Sedtion XVII
COOLING SYSTEM Paragraph
Description and data .................................... Maintenance ........................................ Radiator .................................. Water pump ........................................... Fan belt .................................. Fan .................................. Thermostat ........................................ Temperature gage .......................................
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79 80 81 82 83 84 85 86
79. DESCRIPTION AND DATA. a. Description; The cooling system (fig. 44) consists of the radiator, pressure-type filler cap, fan, fan belt, water pump, thermostat, and temperature gage. The system is of the sealed type, operating under pressure when the engine is warmed up. When in proper condition, the units of the cooling system automatically maintain the engine at the proper operating temperature. The filler pipe is in the top of the radiator at the right side. There are two drain cocks, one in the radiator outlet at the lower left corner, and the other in the right side of the cylinder block at the forward end. In operation the water pump draws the coolant from the bottom of the radiator through the hose connection, and forces it through the cylinder block, past the thermostat, and back to the radiator, where it is cooled by the action of the fan drawing air through the radiator core. The cooling system capacity is 11 quarts. b. Data. Cooling system 11 qt Capacity .................................. Radiator Fin and tube Type .............................. '........ Pressure type Filler cap ................. Water pump Centrifugal Type ................................ Fan belt Drive .................................. Prelubricated ball Bearings ...................... Fan belt Vee Type ...................................... 44/8 in. Length ................................. 1 Width ................... ........... A6 in. 42 deg Angle of Vee ............................ Fan 4 Blades ........................................ 15 in. Diameter ................................. 137