(3) Open the cooling system bleed valve:
• 2.7L: Located on the water outlet connector at
the front of engine (Fig. 22).
• 3.2/3.5L: Located on the lower intake manifold,
left of center and below the upper intake plenum
(Fig. 22).
(4) Attach Special Tool 8195, Filling Aid Funnel to
pressure bottle filler neck (Fig. 23).
(5) Use the supplied clip to pinch overflow hose
that connects between the two chambers of the cool-
ant bottle (Fig. 23).
NOTE: Use only MoparT Antifreeze/Coolant, 5 Year/
100,000 Mile Formula or the equivalent. This coolant
contains corrosion inhibitors (called OAT, for
Organic Additive Technology) that permit extended
drain intervals. Refer to Coolant Performance in this
section for appropriate coolant mixture to use.
CAUTION: Do not mix coolants. If coolant other
than MoparT Antifreeze/Coolant, 5 Year/100,000 Mile
Formula or equivalent is added, the mixed coolant
will have a reduced service schedule. Refer to
Group 0, Lubrication and Maintenance for sched-
uled maintenance.
(6) Pour a 50/50 mix of Mopart Antifreeze/Coolant,
5 Year/100,000 Mile Formula or equivalent and dis-
tilled water into the larger section of Filling Aid Fun-
nel (the smaller section of Funnel is to allow air to
escape). For system capacity, refer to Cooling System
Capacity Chart.
(7) Slowly fill the cooling system until a steady
stream of coolant flows from the hose attached to the
bleed valve (Fig. 22).
(8) Close the bleed valve and continue filling sys-
tem to the top of the Filling Funnel.
(9) Remove clip from overflow hose (Fig. 23).
(10) Allow the coolant in Filling Funnel to drain
into overflow chamber of the pressure bottle.
(11) Remove Special Tool 8195, Filling Aid Funnel.
Install cap on coolant pressure bottle.
(12) Remove hose from bleed valve.
(13) Start engine and run until it reaches operat-
ing temperature.
NOTE: The engine cooling system will push any
remaining air into the coolant bottle within about an
hour of normal driving. As a result, a drop in cool-
ant level in the pressure bottle may occur.
If the engine cooling system overheats and
pushes coolant into the overflow side of the coolant
bottle, this coolant will be sucked back into the
cooling system ONLY IF THE PRESSURE CAP IS
LEFT ON THE BOTTLE. Removing the pressure cap
breaks the vacuum path between the two bottle
sections and the coolant will not return to cooling
system.
(14) Shut off engine allow it to cool down. This
permits coolant to be drawn into the pressure cham-
ber.
(15) With engine COLD, observe coolant level in
pressure chamber. Coolant level should be within
MIN and MAX marks. Adjust coolant level as neces-
sary.
NOTE: The coolant bottle has two chambers. Cool-
ant will normally only be in the inboard (smaller) of
the two. The outboard chamber is only to recover
coolant in the event of an overheat or after a recent
service fill. The outboard chamber should normally
be empty. If there is coolant in the overflow side of
the coolant bottle (after several warm/cold cycles of
the engine) and coolant level is within MIN and MAX
marks, disconnect the end of the overflow hose at
the fill neck and lower it into a clean container.
Allow coolant to drain into the container until emp-
tied. Reconnect overflow hose to fill neck.
REMOVAL AND INSTALLATION
WATER PUMP—2.7L
REMOVAL
The water pump on all models can be replaced
without discharging the air conditioning system.
Fig. 23 Special Tool 8195
1 – SPECIAL TOOL 8195
2 – PRESSURE BOTTLE
3 – PINCH OVERFLOW HOSE
LH COOLING SYSTEM 7 - 21
SERVICE PROCEDURES (Continued)
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