Dodge 2000 DURANGO Service Manual page 230

7 - 28 COOLING SYSTEM
REMOVAL AND INSTALLATION (Continued)
Fig. 33 Viscous Fan and Fan Drive 4.7L
1 – SPECIAL TOOL 6958 SPANNER WRENCH WITH ADAPTER
PINS 8346
2 – FAN
WARNING: CONSTANT TENSION HOSE CLAMPS
ARE USED ON MOST COOLING SYSTEM HOSES.
WHEN REMOVING OR INSTALLING, USE ONLY
TOOLS DESIGNED FOR SERVICING THIS TYPE OF
CLAMP, SUCH AS SPECIAL CLAMP TOOL (NUMBER
6094). SNAP-ON CLAMP TOOL (NUMBER HPC-20)
MAY BE USED FOR LARGER CLAMPS. ALWAYS
WEAR SAFETY GLASSES WHEN SERVICING CON-
STANT TENSION CLAMPS.
CAUTION: A number or letter is stamped into the
tongue of constant tension clamps. If replacement
is necessary, use only an original equipment clamp
with matching number or letter.
(4) If water pump is being replaced, do not unbolt
fan blade assembly from thermal viscous fan drive.
(5) Remove two fan shroud-to-radiator screws (Fig.
34). Disconnect the coolant overflow hose, windshield
washer fluid hose and washer pump electrical con-
nector.
(6) Remove upper fan shroud and fan blade/viscous
fan drive assembly from vehicle.
(7) After removing fan blade/viscous fan drive
assembly, do not place thermal viscous fan drive in
horizontal position. If stored horizontally, silicone
fluid in viscous fan drive could drain into its bearing
assembly and contaminate lubricant.
Fig. 34 Upper Fan Shroud, Coolant reservoir and
Washer Fluid Reservoir
1 – RADIATOR
2 – WASHER FLUID RESERVOIR
3 – COOLANT OVERFLOW/RESERVOIR
4 – FAN SHROUD (UPPER)
5 – SCREW
6 – INTERLOCKING PINS
7 – FAN SHROUD (LOWER)
(8) Remove accessory drive belt as follows: The
drive belt is equipped with a spring loaded automatic
belt tensioner. Relax tension from belt by rotating
tensioner clockwise (as viewed from front) (Fig. 35).
When all belt tension has been relaxed, remove
accessory drive belt.
(9) Remove lower radiator hose clamp and remove
lower hose at water pump.
(10) Remove seven water pump mounting bolts
and one stud bolt.
CAUTION: Do not pry water pump at timing chain
case/cover. The machined surfaces may be dam-
aged resulting in leaks.
(11) Remove water pump and gasket. Discard gas-
ket.
INSTALLATION
(1) Clean gasket mating surfaces.
(2) Using a new gasket, position water pump and
install mounting bolts as shown. (Fig. 36). Tighten
water pump mounting bolts to 54 N·m (40 ft. lbs.)
torque.
(3) Spin water pump to be sure that pump impel-
ler does not rub against timing chain case/cover.
(4) Connect radiator lower hose to water pump.
(5) Relax tension from belt tensioner (Fig. 35).
Install drive belt.
DN