Chrysler 300M, Dodge Interpid. Manual - part 49

STANDARD PROCEDURE - ADDING
ADDITIONAL COOLANT

CAUTION: Do not use well water, or suspect water
supply in cooling system. Use only a 50/50 mixture
of the specified ethylene glycol type antifreeze/cool-
ant and distilled water. (Refer to LUBRICATION &
MAINTENANCE/FLUID TYPES - DESCRIPTION).

When additional coolant is needed, it should be

added to the coolant pressure bottle.

For coolant service schedules (Refer to LUBRICA-

TION & MAINTENANCE/MAINTENANCE SCHED-
ULES - DESCRIPTION).

WARNING:

NOT

OPEN

COOLING

SYSTEM

WHEN HOT AND UNDER PRESSURE BECAUSE
PERSONAL INJURY AND SERIOUS BURNS FROM
COOLANT CAN OCCUR. ALLOW ENGINE TO COOL
BEFORE SERVICING COOLING SYSTEM.

(1) Try squeezing the radiator upper hose to deter-

mine if the system is still pressurized.

(2) Place a shop towel over the pressure cap and

turn to the first stop. Wait to see if any pressure is
released. When no pressure is released, press down
on the cap and turn to the second stop. Remove cap
(Fig. 7).

NOTE: If the coolant pressure bottle is completely
empty, (Refer to 7 - COOLING - STANDARD PROCE-
DURE - COOLING SYSTEM FILLING).

(3) If there is some coolant in coolant pressure bot-

tle, slowly fill coolant pressure bottle.

SPECIFICATIONS

TORQUE

DESCRIPTION

N·m

Ft.

Lbs.

In.

Lbs.

A/C Condenser to Radiator -
Bolts

—

A/C Belt Tensioner & Pulley (2.7L)
- Bolts

—

250

A/C Belt Tensioner Pulley (3.5L) -
Nut

—

Engine Block Heater

—

105

Cooling System Bleed Valve -
(2.7L)

—

110

Cooling System Bleed Valve -
(3.5L)

—

Condenser Inlet Tube Bracket
Screw

—

Engine Oil Cooler - Lines to
Engine

—

260

Engine Oil Cooler - Lines to
Radiator

—

160

Engine Coolant Sensor

—

Radiator Fan to Radiator -
Screws

—

Generator/Power Steering Belt
Tensioner Pulley - Nut

—

Thermostat Housing

—

105

Transmission Oil Cooler - Hose
Clamps

—

Transmission Oil Cooler - Flare
Nuts at Trans

—

260

Water Pump - Bolts

—

105

Water Outlet Connector - Bolts

—

105

Fig. 7 COOLANT BOTTLE LOCATION

1 - COOLANT RECOVERY PRESSURE BOTTLE
2 - PRESSURE CAP

COOLING

7 - 11

COOLING (Continued)

SPECIAL TOOLS

COOLING

Belt Tension Gauge 7198

Hose Clamp Pliers 8495

Hose Clamp Pliers 6094

Filling Aid Funnel 8195

Coolant Refractometer 8286

Cooling System Tester 7700

7 - 12

COOLING

COOLING (Continued)

ACCESSORY DRIVE

TABLE OF CONTENTS

page

ACCESSORY DRIVE

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 13

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

DIAGNOSIS AND TESTING - ACCESSORY

DRIVE BELT

. . . . . . . . . . . . . . . . . . . . . . . . . 13

DRIVE BELTS - 2.7L

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

CLEANING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

INSPECTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 14

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 15

ADJUSTMENTS - BELT TENSION

. . . . . . . . . . . 16

DRIVE BELTS - 3.5L

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

CLEANING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

INSPECTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 16

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 17

ADJUSTMENTS - BELT TENSION

. . . . . . . . . . . 17

ACCESSORY DRIVE

DESCRIPTION

The accessory drive system on 2.7L and 3.5L

engines utilizes two different belts. A conventional
V-belt drives the air conditioning compressor on 3.5L
engines, a Poly-V belt on the 2.7L engine. A Poly-V

belt drives the generator and power steering pump
on all engines.

OPERATION

The accessory drive belts provide the link between

the engine crankshaft and the engine driven accesso-
ries.

DIAGNOSIS AND TESTING - ACCESSORY DRIVE BELT

CONDITION

POSSIBLE CAUSE

CORRECTION

INSUFFICIENT ACCESSORY
OUTPUT DUE TO BELT SLIPPAGE

1. Belt too loose.

1. Adjust belt tension.

2. Belt excessively glazed or worn.

2. Replace and tighten as specified.

BELT SQUEAL WHEN
ACCELERATING ENGINE

1. Belts too loose.

1. Adjust belt tension.

2. Belts glazed.

2. Replace belts.

BELT CHIRP AT IDLE

1. Belts too loose.

1. Adjust belt tension.

2. Foreign material imbedded in
belt.

2. Replace belt.

3. Non-uniform belt.

3. Replace belt.

4. Misaligned pulley(s).

4. Align accessories.

5. Non-uniform groove or eccentric
pulley.

5. Replace pulley(s).

BELT ROLLED OVER IN GROOVE
OR BELT JUMPS OFF

1. Broken cord in belt.

1. Replace belt.

2. Belt too loose, or too tight.

2. Adjust belt tension.

3. Misaligned pulleys.

3. Align accessories.

4. Non-uniform grooves or eccentric
pulley.

4. Replace pulley(s).

ACCESSORY DRIVE

7 - 13

DRIVE BELTS - 2.7L

REMOVAL

GENERATOR/POWER STEERING BELT

(1) Loosen tensioner pulley locking nut (Fig. 1).
(2) Loosen belt adjusting bolt (Fig. 1).
(3) Remove generator/power steering belt.

AIR CONDITIONING BELT

NOTE: The A/C drive belt self tensioner is NOT a
dynamic tensioner. After adjustment the tensioner
bracket bolts are tightened. The torsion spring is no
longer responsible for tensioning the A/C belt. The
torsion spring is only used for initial belt tension-
ing.

(1) Remove generator/power steering belt to gain

access to A/C belt. Refer to GENERATOR/POWER
STEERING BELT for procedure.

(2) Loosen BUT DO NOT REMOVE tensioner

locking bolt and pivot bolt (Fig. 2).

(3) Insert 1/2” drive breaker bar into square open-

ing on belt tensioner. Rotate tensioner counterclock-
wise until belt can be removed from pulleys (Fig. 2).

(4) Slowly rotate tensioner clockwise to relieve

spring load.

CLEANING

Clean all foreign debris from belt pulley grooves.

The belt pulleys must be free of oil, grease, and cool-
ants before installing the drive belt.

INSPECTION

Belt replacement under any or all of the following

conditions is required:

• Excessive wear

• Frayed cords

• Severe glazing
Poly-V Belt system may develop minor cracks

across the ribbed side (due to reverse bending). These
minor cracks are considered normal and acceptable.
Parallel cracks are not (Fig. 3).

NOTE: Do not use any type of belt dressing or
restorer on Poly-V Belts.

Fig. 1 ACCESSORY DRIVE BELTS

1 - A/C DRIVE BELT
2 - LOCKING NUT
3 - GENERATOR/POWER STEERING DRIVE BELT
4 - ADJUSTING BOLT

Fig. 2 AIR CONDITIONING DRIVE BELT

1 - 1/2” DRIVE BREAKER BAR
2 - TENSIONER
3 - PIVOT BOLT
4 - LOCKING BOLT

7 - 14

ACCESSORY DRIVE

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