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TM 5-4210-220-34
2-19.
ENGINE - Continued
INSPECTION
(1)
Remove all loose scale and carbon that may have accumulated on the internal walls of the exhaust manifold.
This is especially important on turbocharged engines because loose scale or carbon could enter and damage
the turbocharger.
(2)
Examine the exhaust manifold studs for damage or wear, and replace as necessary. Tighten new studs to 35
ft lb (47.5 Nm).
(3)
Make sure all gasket material is removed from cylinder head and exhaust manifold mating surface.
(4)
If installing old manifold, make sure it is not cracked or warped.
INSTALLATION
NOTE
Ensure manifold interior is free from scale and carbon. This will eliminate the possibility of turbocharger
damage.
(1)
Place new gasket (8) over studs and up against the cylinder head.
NOTE
When installing the metal clad exhaust manifold gasket(s) be sure the crimped side of the gasket faces
the cylinder head.
(2)
Lift right exhaust manifold (3) into engine compartment. Position the manifold over the studs (7) and against
the exhaust manifold gasket (8).
(3)
Install the hold-down crabs (5), bevel washers (6), and nuts (4) on the studs (7), and draw the exhaust
manifold up against the gasket. Set the bevel washers in position so that outer diameter will rest on the
manifold and the crown at the center is next to the nut. Tighten the exhaust manifold stud nuts (4) from the
center of the exhaust manifold outward, alternating toward either end. Torque the nuts to 35 ft lb (47 Nm).
(4)
Install the right exhaust manifold to the turbocharger pipe (1) into position, and secure using seal clamps (2).
Do not allow exhaust piping to impose excessive loads on turbocharger. Tighten seal clamps firmly.
(5)
Install the left exhaust manifold similarly to steps 1 thru 4 preceding.
2-165
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