Dodge Durango (HB). Manual — part 130
CAUTION: Do not use coolant additives that are claimed to improve engine cooling.
COOLANT LEVEL CHECK
Note: Do not remove radiator cap for routine cool-
ant level inspections. The coolant level can be
checked at coolant recovery bottle (2).
The coolant reserve/overflow system (5) provides a
quick method for determining coolant level without
removing radiator pressure cap. With engine not run-
ning, open the coolant recovery bottle cap and remove
coolant level indicator dipstick to observe coolant level
in coolant recovery bottle. The coolant level should be
between ADD and FULL marks. If the coolant level is
at or below the ADD mark, fill the recovery bottle with
a 50/50 mixture of antifreeze and water ONE QUART
AT A TIME. Repeat this procedure until the coolant
level is at the FULL mark.
COOLING SYSTEM CLEANING/REVERSE FLUSHING
CLEANING
Drain cooling system and refill with water. Run engine with radiator cap installed until upper radiator hose is hot.
Stop engine and drain water from system. If water is dirty, fill system with water, run engine and drain system.
Repeat until water drains clean.
REVERSE FLUSHING
Reverse flushing of cooling system is the forcing of water through the cooling system. This is done using air pres-
sure in the opposite direction of normal coolant flow. It is usually only necessary with very dirty systems with evi-
dence of partial plugging.
REVERSE FLUSHING RADIATOR
Disconnect radiator hoses from radiator inlet and outlet. Attach a section of radiator hose to radiator bottom outlet
fitting and insert flushing gun. Connect a water supply hose and air supply hose to flushing gun.
CAUTION: Internal radiator pressure must not exceed 138 kPa (20 psi) as damage to radiator may result.
Allow radiator to fill with water. When radiator is filled, apply air in short blasts. Allow radiator to refill between blasts.
Continue this reverse flushing until clean water flows out through rear of radiator cooling tube passages. Have radi-
ator cleaned more extensively by a radiator repair shop.
REVERSE FLUSHING ENGINE
Drain cooling system. Remove thermostat housing and thermostat. Install thermostat housing. Disconnect radiator
upper hose from radiator and attach flushing gun to hose. Disconnect radiator lower hose from water pump and
attach a lead-away hose to water pump inlet fitting.
CAUTION: On vehicles equipped with a heater water control valve, be sure heater control valve is closed
(heat off). This will prevent coolant flow with scale and other deposits from entering heater core.
HB
COOLING
7 - 15
Connect water supply hose and air supply hose to flushing gun. Allow engine to fill with water. When engine is filled,
apply air in short blasts, allowing system to fill between air blasts. Continue until clean water flows through the lead
away hose.
Remove lead away hose, flushing gun, water supply hose and air supply hose. Remove thermostat housing and
install thermostat. Install thermostat housing with a replacement gasket. Refer to Thermostat Replacement. Connect
radiator hoses. Refill cooling system with correct antifreeze/water mixture. Refer to Refilling the Cooling System.
CHEMICAL CLEANING
In some instances, use a radiator cleaner (Mopar Radiator Kleen or equivalent) before flushing. This will soften
scale and other deposits and aid flushing operation.
CAUTION: Follow manufacturers instructions when using these products.
SPECIFICATIONS
TORQUE
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Automatic Belt Tensioner to Block - Bolts
41
30
-
Automatic Belt Tensioner Pulley - Bolt
61
45
-
Block Heater - Bolt
2
-
17
Generator/Compressor Mounting Bracket - Bolts -
No. 1 and 2
54
40
-
No. 3
40
30
-
Fan Shroud Mounting - Bolts
6
-
50
Fan Blade to Fan Drive - Bolts
23
17
-
Idler Pulley - Bolt
54
40
-
Radiator to Support - Bolts
23
-
200
Thermostat Housing - Bolts - All Except 4.7L
23
-
200
Thermostat Housing - Bolts - 4.7L
13
-
112
Transmission Auxiliary Oil Cooler - Bolts
10
-
90
Upper Radiator Closure Panel - Bolts
10
-
90
Water Pump - Bolts
58
43
-
FILL VOLUMES
SPECIFICATIONS
DESCRIPTION
SPECIFICATION
Metric
Standard
3.7L
15.4L
16.2 qts.- to the middle of the cold
fill range
4.7L
15.4L
16.3 qts.
5.7L
15.4L
16.2 qts.
7 - 16
COOLING
HB
SPECIAL TOOLS
COOLING
Pliers Constant Pressure Hose Clamp - 6094
Cooling System Pressure Tester - 7700A
3/8” Quick Connect Release Tool - 6935
HB
COOLING
7 - 17
ACCESSORY DRIVE
TABLE OF CONTENTS
page
page
TENSIONERS-BELT
. . . . . . . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . . . 20
BELTS-DRIVE
. . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . 23
TENSIONERS-BELT
DESCRIPTION
7 - 18
ACCESSORY DRIVE
HB
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