Jeep Cherokee 2000 Service Manual - page 283
pump mating surfaces for erosion or damage from
cavitation.
(3) Install the gasket and water pump. The sili-
cone bead on the gasket should be facing the water
pump. Also, the gasket is installed dry. Tighten
mounting bolts to 23 N·m (17 ft. lbs.) torque. Rotate
the shaft by hand to be sure it turns freely.
(4) Connect the radiator and heater hoses to the
water pump.
(5) Install power steering pump and bracket. Refer
to Group 19, Steering.
(6) Position water pump pulley to water pump
hub.
(7) Install shroud and fan together and install four
nuts to water pump hub studs. Tighten nuts to 27
N·m (20 ft. lbs.) torque.
(8) Install and tighten upper fan shroud nuts to 4
N·m (31 in. lbs.).
(9) Connect electric fan connector (if equipped).
CAUTION: When installing the accessory drive belt,
the belt MUST be routed correctly. If not, the engine
may overheat due to the water pump rotating in the
wrong direction. Refer to the Belt Removal and
Installation in this group for appropriate belt rout-
ing. You may also refer to the Belt Routing Label in
the vehicle engine compartment.
(10) Install and tension accessory drive belt, refer
to Accessory Drive Belt removal and installation in
this group.
(11) Install upper radiator hose.
(12) Fill cooling system with coolant and check for
leaks. Refer to Refilling Cooling System in this
group.
(13) Connect battery negative cable.
(14) Start and warm the engine. Check for leaks.
REMOVAL-4.0L ENGINE (LHD/RHD)
(1) Disconnect battery negative cable.
(2) Drain the cooling system. (Refer to Cooling
System-Draining and Filling in this group.)
(3) Disconnect electric cooling fan connector.
(4) Remove electric cooling fan/shroud assembly (if
equipped).
(5) Remove viscous fan shroud bolts (2).
(6) Loosen (but do not remove at this time) the
four water pump pulley-to-water pump hub mounting
bolts (Fig. 29) and the four viscous fan to idler pulley
nuts.
NOTE: The accessory drive belt must be removed
prior to removing the fan (if installed at pump) or
fan pulley.
(7) Remove accessory drive belt (refer to Accessory
Drive Belt, Removal and Installation in this group)
(8) Remove the four viscous fan to idler pulley
nuts and remove the fan and shroud together.
CAUTION: 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.
(9) Remove the four water pump pulley bolts and
remove the pulley.
(10) Remove power steering pump and bracket
(Fig. 30), refer to Group 19 Steering.
(11) Remove lower radiator hose from water pump.
Remove heater hose from water pump fitting.
(12) Remove the four pump mounting bolts (Fig.
31) and remove pump from vehicle. Discard old gas-
ket. Note that one of the four bolts is longer than the
other bolts.
(13) If pump is to be replaced, the heater hose fit-
ting must be removed. Note position of fitting before
removal.
INSTALLATION-4.0L ENGINE (LHD/RHD)
(1) If pump is being replaced, install the heater
hose fitting to the pump. Use a sealant on the fitting
such as Mopar
t
Thread Sealant With Teflon. Refer to
the directions on the package.
(2) Clean the gasket mating surfaces. If the origi-
nal pump is used, remove any deposits or other for-
eign material. Inspect the cylinder block and water
pump mating surfaces for erosion or damage from
cavitation.
(3) Install the gasket and water pump. The sili-
cone bead on the gasket should be facing the water
Fig. 29 Water Pump Pulley Bolts
1 – WATER PUMP HUB
2 – BOLTS (4)
3 – PUMP PULLEY
7 - 26
COOLING SYSTEM
XJ
REMOVAL AND INSTALLATION (Continued)