78. Carburetor
a. Removal.
(1) Remove the four bolts (8) and lockwashers (9) that fasten the air cleaner assembly (1 through 7) to the filter
supports (11). Lift the assembled air cleaner and the packing ring (10) from the carburetor (15).
(2) Disconnect the pump-to-carburetor fuel line from the carburetor fuel inlet.
(3) Disconnect the governor rod from the carburetor throttle lever.
(4) Remove the two hex nuts (16) and lockwashers (17) and lift the carburetor and its gasket (18) from the
intake manifold studs.
b. Installation.
(1) Position the carburetor (15) and its mounting gasket (18) on the engine intake manifold studs, and install the
two hex nuts (16) and lockwashers (17). Tighten the nuts securely.
(2) Reconnect the governor rod to the carburetor throttle lever.
(3) Reconnect the fuel line to the carburetor fuel inlet.
(4) Install the packing ring (10) and assembled air cleaner (1 through 7) and fasten the air cleaner to the
supports (11) with the four hex head bolts (8) and lockwashers (9).
(5) Adjust the carburetor, if necessary, as instructed in paragraph 77b.
Section VII. COOLING SYSTEM
79. Description
a. Water Pump Circulation. The water pump circulates coolant from a common suction connection leading from the
radiator bottom tank into two individual discharge connections. One connection directs coolant to the engine bank; the
other directs coolant to the compressor bank.
b. Engine Bank Circulation. From the engine bank connection, coolant passes around the cylinder liners and up
through cored holes in the engine cylinder head. Jacketing is provided to avoid overheating the intake and exhaust valves
in the cylinder head. After cooling the engine cylinder head and combustion
67
