Chrysler 300M, Dodge Interpid. Manual — part 257

Fig. 128 LOWER INTAKE MANIFOLD

1 - BOLT

6 - GASKET

2 - HEATER SUPPLY TUBE

7 - BOLT

3 - BOLT

8 - O-RING

4 - BOLT

9 - INTAKE MANIFOLD-LOWER

5 - KNOCK SENSOR

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ENGINE

9 - 75

INTAKE MANIFOLD - LOWER (Continued)

EXHAUST MANIFOLD

DESCRIPTION

Both manifolds are a log style made of ductile cast

iron (Fig. 130). The outlets are designed for V-Band
clamp attachment of close coupled catalytic convert-
ers.

EXHAUST MANIFOLD - RIGHT

REMOVAL

(1) Disconnect negative cable from remote jumper

terminal.

(2) Raise vehicle on hoist.
(3) Remove the exhaust system. (Refer to 11 -

EXHAUST SYSTEM - REMOVAL)

(4) Loosen converter pipe support attaching bolt at

transaxle mount.

(5) Loosen the A/C belt. (Refer to 7 - COOLING/

ACCESSORY DRIVE/DRIVE BELTS - REMOVAL)

(6) Lower vehicle.
(7) Remove air cleaner housing and air inlet tube.
(8) Loosen and remove V-Band clamp at exhaust

manifold connector.

Fig. 129 LOWER INTAKE MANIFOLD TIGHTENING

Fig. 130 EXHAUST MANIFOLD

1 - BOLT - HEAT SHIELD
2 - HEAT SHIELD
3 - GASKET
4 - EXHAUST MANIFOLD
5 - BOLT - EXHAUST MANIFOLD
6 - HEAT SHIELD

9 - 76

ENGINE

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INTAKE MANIFOLD - LOWER (Continued)

NOTE: Do not reuse V-Band clamp.

(9) Remove the A/C compressor attaching bolts and

set compressor aside.

(10) Remove engine oil dipstick tube.
(11) Remove the A/C compressor bracket.
(12) Disconnect oxygen sensor electrical connector

and remove sensor.

(13) Remove

heat

shield

attaching

bolts

and

remove heat shields (Fig. 130).

(14) Remove the exhaust manifold attaching bolts

(Fig. 131).

(15) Remove the exhaust manifold and gasket (Fig.

131).

INSPECTION

(1) Inspect

exhaust

manifolds

for

damage

or

cracks.

(2) Check manifold flatness.
(3) Inspect the exhaust manifold gasket for obvi-

ous discoloration or distortion.

(4) Check distortion of the cylinder head mounting

surface with a straightedge and thickness gauge.

INSTALLATION

(1) Install exhaust manifold and gasket. Tighten

bolts starting at the center working outward to 23
N·m (200 in. lbs.) (Fig. 131).

(2) Install heat shields and tighten attaching bolts

to 12 N·m (105 in. lbs.) (Fig. 130).

(3) Install oxygen sensor to manifold and connect

electrical connector.

(4) Install the A/C compressor mounting bracket.
(5) Install engine oil dipstick tube.
(6) Install the A/C compressor and drive belt. For

belt installation procedure, (Refer to 7 - COOLING/
ACCESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).

(7) Install a new V-Band clamp and tighten to 11

N·m (100 in. lbs.).

(8) Raise vehicle on hoist.
(9) Install the exhaust system. (Refer to 11 -

EXHAUST SYSTEM - INSTALLATION)

(10) Install and/or tighten nut attaching converter

pipe support to transaxle mount to 47 N·m (35 ft.
lbs.).

(11) Lower the vehicle.
(12) Install air cleaner housing and air inlet tube.
(13) Connect negative cable.

Fig. 131 EXHAUST MANIFOLD - RIGHT SIDE

1 - GASKET
2 - BOLT - EXHAUST MANIFOLD
3 - EXHAUST MANIFOLD

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ENGINE

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EXHAUST MANIFOLD - RIGHT (Continued)

EXHAUST MANIFOLD - LEFT

REMOVAL

(1) Disconnect negative cable from remote jumper

terminal.

(2) Raise the vehicle on hoist.
(3) Remove the exhaust system. (Refer to 11 -

EXHAUST SYSTEM - REMOVAL)

(4) Loosen converter pipe support attaching bolt at

transaxle mount.

(5) Lower the vehicle.
(6) Loosen and remove the V-Band clamp at

exhaust manifold connector.

NOTE: Do not reuse V-Band clamp.

(7) Remove electrical connector harness bracket.
(8) Disconnect oxygen sensor electrical connector

and remove sensor from manifold.

(9) Remove heat shield attaching bolts and remove

heat shield (Fig. 132).

(10) Remove exhaust manifold attaching bolts (Fig.

132).

(11) Remove exhaust manifold and gasket (Fig.

132).

INSPECTION

(1) Inspect

exhaust

manifolds

for

damage

or

cracks.

(2) Check manifold flatness.
(3) Inspect the exhaust manifold gasket for obvi-

ous discoloration or distortion.

(4) Check distortion of the cylinder head mounting

surface with a straightedge and thickness gauge.

INSTALLATION

(1) Install

the

exhaust

manifold

and

gasket.

Tighten bolts starting at the center working outward
to 23 N·m (200 in. lbs.) (Fig. 132).

(2) Install heat shields and tighten bolts to 12 N·m

(105 in. lbs.) (Fig. 132).

(3) Install oxygen sensor to manifold and connect

electrical connector.

(4) Attach electrical connector bracket to brace.
(5) Install a new V-Band clamp and tighten to 11

N·m (100 In. lbs.).

(6) Raise vehicle on hoist.
(7) Install and/or tighten nut attaching converter

pipe support to transaxle mount to 47 N·m (35 ft.
lbs.).

(8) Install the exhaust system. (Refer to 11 -

EXHAUST SYSTEM - INSTALLATION)

(9) Lower vehicle and connect negative cable.

VALVE TIMING

DESCRIPTION

The timing drive system (Fig. 133) has been

designed to provide quiet performance and reliability
to support a NON free-wheeling engine.

The timing drive components include a crankshaft

sprocket,

camshaft

sprockets,

tensioner

pulley,

hydraulic tensioner and a timing belt. The water
pump is driven by the back side of the timing belt.
The right and left camshaft sprockets are not inter-
changeable because of the cam sensor pick-up wheel
on the left sprocket.

Fig. 132 EXHAUST MANIFOLD

1 - BOLT - HEAT SHIELD
2 - HEAT SHIELD
3 - GASKET
4 - EXHAUST MANIFOLD
5 - BOLT - EXHAUST MANIFOLD
6 - HEAT SHIELD

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ENGINE

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