(2) Close the draincocks (13) on the radiator bottom extension tube and on the left side of the engine.
(3) Fill the radiator with clean water. When filling the radiator with antifreeze, allow room for expansion. Fill the
radiator until the antifreeze solution is about one-half of an inch below the overflow pipe.
Caution: If the engine overheats because of lack of coolant, allow it to cool before filling the
radiator; otherwise, there is danger of cracking the cylinder head and block. If it is necessary to fill
the radiator before the engine has cooled, be sure to fill it very slowly with the engine running at fast
idling speed.
(4) Start the engine and check all connections for leaks.
129. Radiator (fig. 42)
a. Description. The radiator consists of the top tank (1), radiator core (4), and bottom tank (11). The radiator filler (2)
is welded to the radiator top tank assembly (1). The radiator draincock (13) is mounted on the hose elbow (12),
connecting the radiator with the water pump.
b. Removal.
(1) Remove the cover from the steering roll (par. 162b).
(2) Drain the cooling system (par. 128b).
(3) Loosen the hose clamp and disconnect the upper radiator hose from the inlet adapter (4, fig. 43).
(4) Loosen the hose clamp (6, fig. 42) and disconnect the radiator hose (7) from the water pump.
(5) Remove the screws attaching the side panels (5, fig. 43) to the radiator plates. Disconnect the panels from
the radiator. Be careful not to damage the sprinkler hose (6) when disconnecting the panels.
(6) Remove the radiator mounting screws (7), fiatwashers (19), and lockwashers (17) on the bottom part of the
radiator.
(7) Tilt the radiator in the direction of the steering roll and remove it from the steering roll housing.
Caution: The radiator and radiator core can be easily damaged. Be careful not to drop the
radiator while removing it. Place the radiator on a suitable bench to protect it from damage during
disassembly.
c. Disassembly (fig. 44).
(1) Remove the radiator cap (1).
(2) Remove the mounting screws (2) and lockwashers (3) attaching the inlet adapter (5) to the radiator top tank
(8). Remove the inlet adapter (5) and gasket (6). Discard the gasket (6).
121