(2) Lift up the exhaust manifold (1) and disconnect it from the intake manifold (10).
(3) Remove and discard the gasket (8).
(4) Remove and replace the mounting studs (9), if bent, corroded, cracked, or stripped.
(5) Remove the pipe plug (11) from the intake manifold (10).
(6) Remove the nut (21) and washers (20) from the heat control valve stud (19).
(7) Remove the heat control valve weight screw (18) and nut (23) and pull the weight off the valve shaft (16).
(8) Remove the valve weight key (22).
(9) Remove the valve shaft bushings (14) and valve (15) from the valve shaft (16).
d. Inspection. Inspect the intake and exhaust manifolds for cracks, warpage, and pitted mounting surfaces. Check
the heat control valve for corrosion, carbon deposits, and wear. Inspect the mounting nuts and studs for damaged or
stripped threads.
e. Cleaning. Clean all metal parts in cleaning solvent. Remove all carbon deposits, using a stiff wire brush or
scraper. Remove old gasket deposits from the mounting surfaces and see that they are clean and free from carbon and
sludge.
f. Reassembly.
(1) Screw the pipe plug (11) into the intake manifold (10).
(2) Install the bushings (14) in the exhaust manifold.
(3) Install the valve shaft (16) in the exhaust manifold. Mount the valve (15) on the valve shaft (16).
(4) Install the key (22) and heat control valve weight (17).
(5) Install the valve weight screw (18) and nut (23).
(6) Install and tighten the heat control valve mounting washer (20) and nut (21).
(7) Install a new gasket (8) on the intake manifold (10).
(8) Position the exhaust manifold (1) over the intake manifold (10) and see that the mounting studs (9) of the
intake manifold are properly alined with the mounting holes in the exhaust manifold (1).
(9) Install and tighten the mounting washers (4) and nuts (3). Make sure that the gasket (8) is not bent, twisted,
or cracked.
g. Installation.
(1) Install a new gasket (2) on the mounting studs (5) in the cylinder block.
(2) Lift up the intake (10) and exhaust (1) manifold assembly and position it over the mounting studs (5).
(3) Press the manifold assembly against the cylinder block. See that the gasket is fitting properly and that it is
not bent or twisted.
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