the water pump is seated. Attach the gasket to the water pump body.
(2) Position the water pump (4) over its seat and see that the holes in the gasket are properly alined with the
mounting holes in the cylinder block.
(3) Install the mounting screws (6) and lockwashers. Tighten them evenly. The proper torque wrench reading
is 15 to 20 ft-lb.
(4) Install the radiator hose on the water pump adapter (8) and tighten the hose clamp.
(5) Slip the fan belt over the water pump pulley and the crankshaft pulley.
(6) Install the fan belt over the generator pulley and pull the generator away from the cylinder block until the fan
belt is tight. If the fan belt can be depressed by thumb pressure from three-quarters to 1 inch between the
pulleys, the fan belt adjustment is correct (par. 112). Tighten the generator mounting bolts (par. 112h).
(7) Install the fan on the water pump pulley (3) and tighten the mounting screws.
(8) Fill the cooling system and start the engine. Check the water pump for leaks.
Section X. INTAKE AND EXHAUST SYSTEM
131. Description
The intake and exhaust system of the engine consists of the intake and exhaust manifolds, the heat control valve
mounted on the exhaust manifold, the exhaust pipe, and muffler. The combustible mixture is drawn from the carburetor
into the intake manifold and directed into the cylinders, where it is ignited. The exhaust resulting from the explosion is
forced into the exhaust manifold and directed away from the engine through the exhaust pipe and muffler. The heat
control valve is mounted on the exhaust manifold and helps to vaporize the fuel when the engine is cold. When the valve
weight is moved to the left, the valve is closed and directs the hot exhaust gases around the intake manifold. When the
valve weight is moved to the right, the valve is open and the exhaust gases are directed into the exhaust pipe.
132. Intake and Exhaust Manifold (fig. 46)
a. Description. The intake (10) and exhaust (1) manifolds are mounted on the right side of the engine and secured to
the cylinder block with studs (5), bridge clamps (12), and nuts (7). The exhaust
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