Dodge Ram Truck 1500-2500-3500. Manual — part 229

CAUTION: Do not use coolant additives that are claimed to improve engine cooling.

Do not remove the radiator cap to add coolant to the system. When adding coolant to maintain the correct level, do
so only at the reserve/overflow bottle. Remove the radiator cap only for testing or when refilling the system after
service. Removing the cap unnecessarily can cause loss of coolant and allow air to enter the system, which pro-
duces corrosion.

WARNING: DO NOT REMOVE OR LOOSEN THE RADIATOR CAP WITH THE COOLING SYSTEM HOT AND
UNDER PRESSURE. SERIOUS BURNS FROM THE COOLANT OR HIGH PRESSURE STEAM CAN OCCUR.

SPECIFICATIONS

TORQUE

DESCRIPTION

N·m

Ft. Lbs.

In. Lbs.

Bolt - Automatic Belt Tensioner to Block

41

30

-

Bolt - Automatic Belt Tensioner Pulley

61

45

-

Bolt - Automatic Belt Tensioner Pulley - Diesel

43

32

-

Engine Mounted Fan Shroud Brackets (Upper and Lower)

24

18

-

Fan Shroud Ring to Fan Shroud Brackets

24

18

-

Bolt - Block Heater

2

-

17

Bolts - Generator/Compressor Mounting Bracket

# 1 and 2

54

40

-

# 3

40

30

-

Bolts - Generator/Compressor Mounting Bracket - Diesel

24

18

-

Bolts - Fan Shroud to Radiator Mounting - All Except 5.9L
Diesel

6

-

55

5.9L Diesel

11.8

-

105

Bolts - Radiator to Support

8.5

-

75

Bolts - Fan Blade to Viscous Fan Drive

24

18

-

Fan Drive - All Except 8.0L/5.9L Diesel

50

37

-

8.0L/5.9L Diesel

115

85

-

Bolt - Idler Pulley

54

40

-

Bolt - Idler Pulley - Diesel

43

32

-

Bolts - Thermostat Housing - All Except 5.9L Diesel

13

-

112

Bolts - Thermostat Housing 5.9L

23

16

-

Bolts - Thermostat Housing - Diesel

10

-

89

Bolts - Power Steering Oil Cooler

8.4

-

75

Bolts - Transmission Auxiliary Oil Cooler

6

-

55

Nuts - Transmission Oil Cooler Tube

31.5

24

-

Bolts - Coolant Bottle

8.5

-

75

Tube Nuts - Transmission Oil Cooler to Transmission

5.9L/46RE

31.5

24

-

3.7L/4.7L/5.7L/45RFE

20

18

-

Bolts - Water Pump - Diesel

24

18

-

Bolts - Water Pump - 4.7L

58

43

-

Block Heater - Diesel

75

55

-

Transmission Oil Cooler - Diesel

M8

24

18

-

M12

77

57

-

7 - 22

COOLING

DR/DH

SPECIFICATIONS - FILL VOLUMES

DESCRIPTION

SPECIFICATION

Metric

Standard

3.7/4.7L/5.7L Engine

15.4L

16.2 qts.- to the middle of the cold
fill range

8.3L SRT-10 Engine

18.9L

20 qts.

5.9L Diesel Engine

28L

29.5 qts.

DR/DH

COOLING

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SPECIAL TOOLS

COOLING

Pliers Constant Pressure Hose Clamp - 6094

3/8” Quick Connect Release Tool - 6935

SPANNER WRENCH - 6958

Cooling System Pressure Tester - 7700A

Adapter Pins 8346

Coolant Refractometer 8286

7 - 24

COOLING

DR/DH

ACCESSORY DRIVE

TABLE OF CONTENTS

page

page

TENSIONER-BELT

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 25

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 25

REMOVAL

3.7L/4.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . 26

5.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 26

5.9L DIESEL

. . . . . . . . . . . . . . . . . . . . . . . . . 27

8.3L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 27

INSTALLATION

3.7L/4.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . 28

5.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 28

5.9L DIESEL

. . . . . . . . . . . . . . . . . . . . . . . . . 29

8.3L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 29

BELT-DRIVE

DIAGNOSIS AND TESTING

ACCESSORY DRIVE BELT

. . . . . . . . . . . . . . 30

REMOVAL

3.7L/4.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . 32

5.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 33

5.9L DIESEL

. . . . . . . . . . . . . . . . . . . . . . . . . 33

8.3L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 34

INSTALLATION

3.7L/4.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . 35

5.7L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 36

5.9L DIESEL

. . . . . . . . . . . . . . . . . . . . . . . . . 36

8.3L ENGINE

. . . . . . . . . . . . . . . . . . . . . . . . . 37

TENSIONER-BELT

DESCRIPTION

Correct drive belt tension is required to ensure opti-
mum performance of the belt driven engine accesso-
ries. If specified tension is not maintained, belt
slippage may cause; engine overheating, lack of
power steering assist, loss of air conditioning capacity,
reduced generator output rate, and greatly reduced
belt life.

It is not necessary to adjust belt tension. All engines
are equipped with an automatic belt tensioner. The
tensioner maintains correct belt tension at all times.

CAUTION: Do not attempt to check belt tension
with a belt tension gauge on vehicles equipped
with an automatic belt tensioner.

OPERATION

The automatic belt tensioner maintains belt tension by using internal spring pressure, a pivoting arm and pulley to
press against the drive belt.

DR/DH

ACCESSORY DRIVE

7 - 25