Chrysler Vehicle User Manual page 306

TJ
RADIATOR (Continued)
WARNING: THE AIR CONDITIONING SYSTEM (IF
EQUIPPED) IS UNDER A CONSTANT PRESSURE
EVEN WITH THE ENGINE OFF. REFER TO REFRIG-
ERANT WARNINGS IN, HEATING AND AIR CONDI-
TIONING BEFORE
CONDITIONING COMPONENT.
NOTE: The radiator and radiator cooling fan can be
removed as an assembly. It is not necessary to
remove the cooling fan before removing or install-
ing the radiator.
(12) Gently lift up and remove radiator from vehi-
cle. Be careful not to scrape the radiator fins against
any other component. Also be careful not to disturb
the air conditioning condenser (if equipped).
CLEANING
Clean radiator fins. With the engine cold, apply
cold water and compressed air to the back (engine
side) of the radiator to flush the radiator and/or A/C
condenser of debris.
INSPECTION
The radiator cooling fins should be checked for
damage or deterioration. Inspect cooling fins to make
sure they are not bent or crushed, these areas result
in reduced heat exchange causing the cooling system
to operate at higher temperatures. Inspect the plastic
end tanks for cracks, damage or leaks.
Inspect the radiator neck for damage or distortion.
INSTALLATION
INSTALLATION
(1) Position the radiator. Install and tighten the
six mounting bolts (Fig. 20) to 8 N·m (72 in. lbs.)
torque.
(2) Close radiator draincock.
(3) Position fan shroud and power steering reser-
voir tank (if equipped). Install and tighten four
mounting bolts to 8 N·m (72 in. lbs.) torque.
(4) If equipped, remove plugs and connect auto-
matic transmission fluid cooler lines and constant
tension clamps.
(5) Connect radiator hoses and install hose clamps.
(6) Position and install the condenser lower seal
(Fig. 19).
(7) Connect battery negative cable.
(8) Fill cooling system with correct coolant (Refer
to 7 - COOLING - STANDARD PROCEDURE).
(9) Connect coolant recovery bottle hose.
(10) Install radiator cap.
(11) Check and adjust automatic transmission
fluid level (if equipped).
HANDLING ANY
(12) Start engine and check for leaks.
INSTALLATION
CAUTION: Before installing the radiator or A/C con-
AIR
denser, be sure the radiator-to-body and radiator-to-
A/C condenser rubber air seals are properly
fastened to their original positions. These are used
at the top, bottom and sides of the radiator and A/C
condenser. To prevent overheating, these seals
must be installed to their original positions.
(1) Gently lower the radiator and fan shroud into
the vehicle. Guide the two radiator alignment dowels
into the rubber grommets located in lower radiator
crossmember.
(2) Connect the radiator upper and lower hoses
and hose clamps to radiator.
CAUTION: The tangs on the hose clamps must be
positioned straight down.
(3) Install coolant reserve/overflow tank hose at
radiator.
(4) Connect both transmission cooler lines at the
radiator.
(5) Install both radiator mounting bolts.
(6) Reconnect the electric cooling fan.
(7) Install the grill (Refer to 23 - BODY/EXTERI-
OR/GRILLE - INSTALLATION).
(8) Reinstall the cooling fan to the engine.
(9) Rotate the fan blades (by hand) and check for
interference at fan shroud.
(10) Refill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(11) Connect battery cable at battery.
(12) Start and warm engine. Check for leaks.
WATER PUMP - 2.4L
DESCRIPTION
The water pump has a cast aluminum body and
housing with a stamped steel impeller. The water
pump bolts directly to the block (Fig. 25). The cylin-
der block to water pump seal is provided by a rubber
O-ring. The water pump is driven by the engine tim-
ing belt.
OPERATION
The water pump is the heart of the cooling system.
The coolant is pumped through the engine block, cyl-
inder head, heater core, and radiator.
ENGINE 7 - 37