Thermostat— 4.7L Engine - Dodge 2000 DURANGO Service Manual

7 - 34 COOLING SYSTEM
REMOVAL AND INSTALLATION (Continued)
Fig. 47 Thermostat Position—5.2L/5.9L Engines
(b) Install support bracket (generator mounting
bracket-to-intake manifold) (Fig. 44). Tighten bolts
to 54 N·m (40 ft. lbs.) torque.
(c) Position drive belt over all pulleys except
idler pulley (located between generator and A/C
compressor).
(d) Attach a socket/wrench to pulley mounting
bolt of automatic tensioner (Fig. 45).
(e) Rotate socket/wrench clockwise. Place belt
over idler pulley. Let tensioner rotate back into
place. Remove wrench. Be sure belt is properly
seated on all pulleys.
(8) Fill cooling system. Refer to Refilling Cooling
System in this group.
(9) Connect battery negative cable.
(10) Start and warm the engine. Check for leaks.
THERMOSTAT— 4.7L 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.
(1) Disconnect negative battery cable at battery.
(2) Drain cooling system. Refer to Draining Cool-
ing System in this section.
Fig. 48 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
(3) Raise vehicle on hoist.
(4) Remove splash shield.
(5) Remove lower radiator hose clamp and lower
radiator hose at thermostat housing.
(6) Remove thermostat housing mounting bolts,
thermostat housing and thermostat (Fig. 49).
INSTALLATION
(1) Clean mating areas of timing chain cover and
thermostat housing.
(2) Install thermostat (spring side down) into
recessed machined groove on timing chain cover (Fig.
49).
(3) Position thermostat housing on timing chain
cover.
(4) Install two housing-to-timing chain cover bolts.
Tighten bolts to 13 N·m (115 in. lbs.) torque.
CAUTION: Housing must be tightened evenly and
thermostat must be centered into recessed groove
in timimg chain cover. If not, it may result in a
cracked housing, damaged timing chain cover
threads or coolant leaks.
DN