Dodge dakota 2002 Service Manual page 288

DR
COOLING
DESCRIPTION
DESCRIPTION - COOLING SYSTEM FLOW
3.7L/4.7L ENGINE . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION - COOLING SYSTEM FLOW -
5.9L ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION-COOLING SYSTEM FLOW -
5.9L DIESEL . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DESCRIPTION - HOSE CLAMPS
OPERATION
OPERATION-COOLING SYSTEM
OPERATION-HOSE CLAMPS
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING-ON-BOARD
DIAGNOSTICS (OBD) . . . . . . . . . . . . . . . . . . . 5
DIAGNOSIS AND TESTING-COOLING
SYSTEM - TESTING FOR LEAKS . . . . . . . . . . 5
DIAGNOSIS AND TESTING - COOLING
SYSTEM DIESEL ENGINE . . . . . . . . . . . . . . . . 7
DIAGNOSIS AND TESTING - PRELIMINARY
CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STANDARD PROCEDURE
STANDARD PROCEDURE - COOLANT
LEVEL CHECK . . . . . . . . . . . . . . . . . . . . . . . . 17
COOLING
DESCRIPTION
DESCRIPTION - COOLING SYSTEM FLOW
3.7L/4.7L ENGINE
The cooling system regulates engine operating tem-
perature. It allows the engine to reach normal oper-
ating temperature as quickly as possible. It also
maintains normal operating temperature and pre-
vents overheating.
The cooling system provides a means of heating
the passenger compartment and cooling the auto-
matic transmission fluid (if equipped). The cooling
system is pressurized and uses a centrifugal water
pump to circulate coolant through the system and a
coolant deaeration and reserve system that utilizes a
pressurized degas bottle (hot bottle).
An optional factory installed maximum duty cool-
ing package is available on most models. This pack-
age will provide additional cooling capacity for
COOLING
TABLE OF CONTENTS
page
STANDARD PROCEDURE - COOLING
STANDARD PROCEDURE-DRAINING
STANDARD PROCEDURE - REFILLING
STANDARD PROCEDURE-DRAINING
. . . . . . . . . . . 3 STANDARD PROCEDURE-REFILLING
. . . . . . . . . 3 STANDARD PROCEDURE-DRAINING
. . . . . . . . . . . . 5
STANDARD PROCEDURE-REFILLING
STANDARD PROCEDURE - ADDING
SPECIFICATIONS
TORQUE
SPECIFICATIONS -
SPECIAL TOOLS
COOLING
ACCESSORY DRIVE
ENGINE
TRANSMISSION
vehicles used under extreme conditions such as
trailer towing in high ambient temperatures (Fig. 1).
DESCRIPTION - COOLING SYSTEM FLOW -
5.9L ENGINE
The cooling system regulates engine operating tem-
perature. It allows the engine to reach normal oper-
ating temperature as quickly as possible. It also
maintains normal operating temperature and pre-
vents overheating.
The cooling system also provides a means of heat-
ing the passenger compartment and cooling the auto-
matic transmission fluid (if equipped). The cooling
system uses a coolant recovery / reserve system that
utilizes an ambient overflow bottle.
An optional factory installed maximum duty cool-
ing package is available on most models. This pack-
age will provide additional cooling capacity for
vehicles used under extreme conditions such as
trailer towing in high ambient temperatures (Fig. 2).
SYSTEM CLEANING/REVERSE FLUSHING . . 17
COOLING SYSTEM 3.7L/4.7L/5.7L ENGINE . . 18
COOLING SYSTEM 3.7L/4.7L/5.7L ENGINE . . 18
COOLING SYSTEM 5.9L/8.0L ENGINE . . . . . . 18
COOLING SYSTEM 5.9L/8.0L ENGINE . . . . . . 18
COOLING SYSTEM 5.9L DIESEL ENGINE . . . 19
COOLING SYSTEM 5.9L DIESEL ENGINE . . . 19
ADDITIONAL COOLANT . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
. . . . . . . . . . . . . . . . . . . . . . . . . 72
COOLING 7 - 1
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