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EXHAUST MANIFOLD -706880833
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TM-5-4210-233-14-P-1 Firfighting Truck 100 Ft. Aerial Ladder 1000 GPM Manual
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WATER PUMP -706880835
TM 5-4210-233-14&P-1
5-24. EXHAUST MANIFOLD-Continued
b. 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 turbocharger engines becauseloose scale or carbon
could enter and damage the turbocharger.
(2) Examine the exhaust manifold studs for damage, and replace as necessary. Torque new studs to
25-40 lb-ft (34-54 Nm).
(3) Make sure all gasket material is removed from cylinder head and exhaust manifold mating surface.
(4) Inspect manifold for cracks, damage or warpage.
c.
Installation.
CAUTION
Ensure manifold interior is free from scale and carbon. This will
eliminate the possibility of turbocharger damage.
(1)
Place two new gaskets (8) over studs and up against the cylinder head.
NOTE
When installing the two metal clad exhaust manifold gaskets be
sure the crimped sides of the gaskets face the cylinder head.
(2) Lift right exhaust manifold (3) into engine compartment. Position the manifold over the studs (7)
and up against the exhaust manifold gaskets (8).
NOTE
Be sure the locating pads on the exhaust manifold rest on the
cylinder block locating pads.
(3) Install the two hold-down crabs (5), three bevel washers (6),and five nuts (4) on the studs (7), and
draw the exhaust manifold up against the gaskets. 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 30-35 ft lb (41-47 Nm).
(4) Install the right exhaust manifold to turbocharger pipe (1) into position, and secure using two seal
clamps (2) Do not allow exhaust piping to impose excessive loads on turbocharger. Tighten seal
clamps firmly.
(5) Tighten dipstick bracket screw.
(6) Repeat steps 1 through 4 to install left exhaust manifold.
d. Follow-on Maintenance.
(1) Install engine enclosure (see para 4-127).
(2) Connect batteries (see para 4-114).
5-164

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