(8) After engine has reached normal operating
temperature, shut engine off and allow it to cool.
(9) Remove coolant tank cap.
(10) Add coolant into the coolant tank up to the
COLD mark. If possible, only add coolant when
the engine is cold. Coolant level in a warm
engine will be higher in the tank due to ther-
mal expansion.
(11) After the engine has been operated through a
few heat-up and cool-down cycles, recheck the coolant
level in the tank.
COOLANT REPLACEMENT
It is recommended that the cooling system be
drained and flushed at 84,000 kilometers (52,500
miles), or 3 years, whichever occurs first. Then every
two years, or 48,000 kilometers (30,000 miles),
whichever occurs first.
REMOVAL AND INSTALLATION
COOLING MODULE ASSEMBLY
The cooling module assembly includes the radiator,
charge air cooler (intercooler) and the A/C condenser.
To replace any one of these components, the entire
assembly must be removed from the vehicle and then
disassembled.
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
(Fig.
15).
ALWAYS
WEAR
SAFETY
GLASSES WHEN SERVICING CONSTANT TENSION
CLAMPS.
CAUTION: A number or letter is stamped into the
tongue of constant tension clamps (Fig. 16). If
replacement is necessary, use only an original
equipment clamp with matching number or letter.
REMOVAL
WARNING: DO
NOT
REMOVE
THE
CYLINDER
BLOCK DRAIN-PLUG, THE COOLANT TANK CAP,
THE RADIATOR FILL VENT VALVE, OR LOOSEN
THE RADIATOR DRAINCOCK WITH THE SYSTEM
HOT AND PRESSURIZED. SERIOUS BURNS FROM
THE COOLANT CAN OCCUR.
CAUTION: Before removing the cooling module
assembly, note the location of each of the air seals.
These seals are used to direct air through the con-
denser, radiator and charge air cooler. The air seals
must be reinstalled in their proper locations in
order for the air conditioning and engine cooling
systems to perform as designed.
(1) Disconnect the negative battery cable.
(2) Raise the vehicle on the hoist.
(3) Remove the lower front splash shield
(4) Drain the cooling system. Refer to Group 7,
Cooling System for the procedure.
(5) Remove the lower radiator hose from the radi-
ator (Fig. 17).
Fig. 15 Hose Clamp Tool
1 – HOSE CLAMP TOOL 6094
2 – HOSE CLAMP
Fig. 16 Clamp Number/Letter Location
1 – TYPICAL CONSTANT TENSION HOSE CLAMP
2 – CLAMP NUMBER/LETTER LOCATION
3 – TYPICAL HOSE
7 - 20
COOLING SYSTEM
WJ
SERVICE PROCEDURES (Continued)
2000 JEEP GRAND CHEROKEE