Manifolds

TM 10-3930-633-12

(6) To separate the manifolds, remove the nuts

4-73. Manifolds

The manifolds are essentially two separate networks

joining the intake and exhaust manifolds.

of pipes used to conduct gases" to and from the

engine. The inlet manifold carries the fuel-air

mixture from the carburetor to each of the six

cylinders. The carburetor and governor are mounted

directly to the inlet manifold. The exhaust manifold

carries the engine exhaust from each cylinder to the

exhaust system. The connecting flange for the

exhaust pipe is made into the exhaust manifold.

a. Inspection.

(1) Check the manifold gasket surfaces for de-

fective gaskets and evidence of leakage.

(2) Check for cracks or defects in castings in

either manifold.

(3) Replace gaskets of manifolds if any defects

are found.

b. Removal.

(1) Refer to figure 4-39 and remove wing nut,

plate, and the air cleaner inlet elbow. Disconnect the

choke cable at the carburetor. Disconnect the accel-

e r a t o r cable at the carburetor. Remove the

accelerator retracting spring.

(2) Disconnect the fuel inlet line and the dis-

tributor vacuum line from the carburetor.

(3) Disconnect the exhaust pipe from the ex-

haust manifold.

(4) Disconnect the power brake vacuum line.

(5) Remove the bolts and nuts attaching the

manifolds to the cylinder head (fig. 4-40). Lift the

manifold assemblies from the engine. Remove and

discard the gaskets.

Figure 4-39. Manifolds Removal

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