Thermostat—5.2L/5.9L Engine - Dodge 2000 DURANGO Service Manual

7 - 32 COOLING SYSTEM
REMOVAL AND INSTALLATION (Continued)
(9) Install idler pulley. Tighten bolt to 54 N·m (40
ft. lbs.) torque.
(10) Relax tension from belt tensioner (Fig. 41).
Install drive belt.
CAUTION: When installing serpentine accessory
drive belt, the belt must be routed correctly. If not,
engine may overheat due to water pump rotating in
wrong direction. Refer to (Fig. 43) for correct belt
routing. The correct belt with correct length must
be used.
Fig. 43 Belt Routing—5.2L/5.9L Engines
1 – IDLER PULLEY
2 – GENERATOR PULLEY
3 – A/C COMPRESSOR PULLEY
4 – IF W/OUT A/C
5 – POWER STEERING PUMP PULLEY
6 – WATER PUMP PULLEY
7 – CRANKSHAFT PULLEY
8 – AUTOMATIC TENSIONER
(11) Install air cleaner assembly.
(12) Install upper radiator hose to radiator.
(13) Connect wiring harness to A/C compressor.
(14) Connect battery negative cable.
(15) Fill cooling system. Refer to Draining and
Filling Cooling System in this section.
(16) Start and warm the engine. Check for leaks.
THERMOSTAT—5.2L/5.9L ENGINE
REMOVAL
WARNING: DO NOT LOOSEN RADIATOR DRAIN-
COCK WITH SYSTEM HOT AND PRESSURIZED.
SERIOUS BURNS FROM COOLANT CAN OCCUR.
Do not waste reusable coolant. If solution is clean,
drain coolant into a clean container for reuse.
If thermostat is being replaced, be sure that
replacement is specified thermostat for vehicle model
and engine type.
Factory installed thermostat housings on 5.2L/5.9L
engines are installed on a gasket with an anti-stick
coating. This will aid in gasket removal and clean-up.
(1) Disconnect negative battery cable at battery.
(2) Drain cooling system until coolant level is
below thermostat. Refer to Draining Cooling System
in this group.
(3) Air Conditioned vehicles: Remove support
bracket (generator mounting bracket-to-intake mani-
fold) located near rear of generator (Fig. 44).
Fig. 44 Generator Support Bracket—5.2L/5.9L
1 – IDLER PULLEY BUSHING
2 – A/C AND/OR GENERATOR MOUNTING BRACKET
3 – IDLER PULLEY
4 – SCREW AND WASHER
(4) On air conditioning equipped vehicles, the gen-
erator must be partially removed.
(a) Remove generator drive belt as follows: Drive
belts on 5.2L/5.9L engines are equipped with a
spring loaded automatic belt tensioner (Fig. 45).
(b) Attach a socket/wrench to pulley mounting
bolt of automatic tensioner (Fig. 45).
(c) Rotate tensioner assembly clockwise (as
viewed from front) until tension has been relieved
from belt.
(d) Remove belt from vehicle.
(e) Remove two generator mounting bolts. Do
not remove any wiring at generator. If equipped
Engine
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