Jeep 1997 Grand Cherokee Service Manual page 252

7 - 24 COOLING SYSTEM
REMOVAL AND INSTALLATION (Continued)
INSTALLATION
(1) Position cooler to vehicle.
(2) Install lower hose and hose clamp to cooler.
Hose clamp screws must be facing towards rear of
vehicle. Tighten clamp to 2 N·m (18 in. lbs.) torque.
(3) Install upper hose and hose clamp at cooler.
Hose clamp screws must be facing towards rear of
vehicle. Tighten clamp to 2 N·m (18 in. lbs.) torque.
(4) Install brace and mounting bracket bolts (Fig.
23).
(5) Connect negative battery cable to battery.
(6) Add necessary transmission fluid. Refer to
Group 21, Transmissions. Start engine and check for
leaks.
(7) Install grill opening
bumper fascia and grill. Refer to Group 23, Body.
WATER PUMP 4.0L ENGINE
CAUTION: If the water pump is replaced because
of mechanical damage, the fan blades and viscous
fan drive should also be inspected. These compo-
nents could have been damaged due to excessive
vibration.
REMOVAL
The water pump can be removed without discharg-
ing the air conditioning system (if equipped).
CAUTION: The 4.0L engine has a reverse (counter-
clockwise) rotating water pump. The letter R is
stamped into the back of the water pump impeller
(Fig. 25) to identify. Engines from previous model
years, depending upon
equipped with a forward (clockwise) rotating water
pump. Installation of the wrong water pump will
cause engine over heating.
The water pump impeller is pressed on the rear of
the pump shaft and bearing assembly. The water
pump is serviced only as a complete assembly.
WARNING: DO NOT REMOVE THE BLOCK DRAIN
PLUG(S) OR LOOSEN RADIATOR DRAINCOCK
WITH THE SYSTEM HOT AND UNDER PRESSURE.
SERIOUS BURNS FROM COOLANT CAN OCCUR.
DO NOT WASTE reusable coolant. If the solution
is clean, drain coolant into a clean container for
reuse.
(1) Disconnect negative battery cable at battery.
(2) Drain the cooling system.
(3) Vehicles with 4.0L 6-cylinder engine
equipped with A/C or heavy duty cooling sys-
tem:
reinforcement panel,
application, may be
ROTATION DIRECTION AS VIEWED
FRONT VIEW
Fig. 25 Reverse Rotating Water Pump—Typical
(4) Loosen (but do not remove at this time) the
four water pump pulley-to-water pump hub mounting
bolts (Fig. 26).
(5) Vehicles with 4.0L 6-cylinder engine with-
out A/C or heavy duty cooling system:
(6) Loosen (but do not remove at this time) the
four fan hub-to-water pump pulley mounting nuts
(Fig. 27).
Fig. 26 Water Pump Pulley Bolts
NOTE: The engine accessory drive belt must be
removed prior to removing the fan (if installed at
pump) or fan pulley.
(7) Remove engine drive belt.
(8) Remove power steering pump (Fig. 28), refer to
Group 19 Steering.
PUMP PULLEY WATER PUMP HUB BACK VIEW ROTATION DIRECTION AS BOLTS (4) VIEWED
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