Exhaust Manifold; Intake Manifold - Dodge 2000 DURANGO Service Manual

DN
DESCRIPTION AND OPERATION (Continued)
1 – OIL DEFLECTOR TAB
2 – BOLT
3 – ROCKER ARM PIVOT
4 – ROCKER ARM
5 – DRIP OILING FOR VALVE TIP
6 – CYLINDER HEAD BOSS
7 – TO MAIN BEARINGS
8 – TO CAMSHAFT BEARINGS
9 – ROCKER ARM
10 – HOLLOW PUSH ROD
11 – TAPPET
12 – TO CONNECTING ROD BEARINGS
13 – OIL INTAKE

EXHAUST MANIFOLD

DESCRIPTION
The exhaust manifolds are constructed of cast iron
and are LOG type with balanced flow (Fig. 5). One
exhaust manifold is attached to each cylinder head.
Fig. 5 Exhaust Manifolds—V-8 Gas Engines Typical
1 – EXHAUST MANIFOLD (LEFT)
2 – BOLTS & WASHERS
3 – NUTS & WASHERS
4 – EXHAUST MANIFOLD (RIGHT)
5 – BOLTS & WASHERS
OPERATION
The exhaust manifolds collect the engine exhaust
exiting the combustion chambers, then channels the
exhaust gases to the exhaust pipes attached to the
manifolds.

INTAKE MANIFOLD

DESCRIPTION
The aluminum intake manifold (Fig. 6) is a single
plane design with equal length runners and uses a
separate plenum, therefore the manifold does have a
plenum gasket. It also uses separate flange gaskets
and front and rear cross-over gaskets. Extreme care
14 – OIL PUMP
15 – OIL FILTER
16 – CRANKSHAFT
17 – FROM OIL PUMP
18 – OIL TO FILTER
19 – OIL FROM FILTER TO SYSTEM
20 – PASSAGE TO CAMSHAFT REAR BEARING
21 – RIGHT OIL GALLERY
22 – PLUG
23 – OIL PASSAGE FOR OIL PRESSURE INDICATOR LIGHT
24 – OIL SUPPLY VIA HOLLOW PUSH ROD SUPPLY IS FROM
OIL GALLERY METERED THROUGH HYDRAULIC TAPPET
25 – OIL SUPPLY FROM HOLLOW PUSH ROD
must be used when sealing the gaskets to ensure
that excess sealant does not enter the intake runners
causing a restriction. Whenever the intake manifold
is removed inspect the plenum pan for evidence of
excess oil buildup, this condition indicates that the
plenum pan gasket is leaking.
Fig. 6 Intake Manifold and Throttle Body—V-8 Gas
Engines Typical
1 – FUEL RAIL ASSEMBLY
2 – FUEL RAIL MOUNTING BOLTS
3 – FUEL RAIL CONNECTING HOSES
OPERATION
The intake manifold, meters and delivers air to the
combustion chambers allowing the fuel delivered by
the fuel injectors to ignite, thus producing power.
5.2L ENGINE 9 - 89