Chrysler 2004 Concorde Service Manual page 192

7 - 8 COOLING
COOLING (Continued)
STANDARD PROCEDURE - COOLING SYSTEM
DRAINING
When servicing the cooling system, it is essential
that coolant does not drip on the drive belts or pul-
leys. If necessary, shield the belts with shop towels
before working on the cooling system. If coolant con-
tacts the belts or pulleys, flush both with clean
water.
WARNING: DO NOT REMOVE HOSE CLAMPS OR
HOSES, CYLINDER BLOCK DRAIN PLUGS, COOL-
ANT BOTTLE CAP, OR OPEN THE RADIATOR
DRAINCOCK, WHEN THE SYSTEM IS HOT AND
UNDER PRESSURE BECAUSE SERIOUS BURNS
FROM THE COOLANT CAN OCCUR.
The radiator draincock that is located at the lower
right side of radiator (Fig. 4). The draincock stem is
closed in the horizontal position, pointing to 3:00
o'clock. Draining takes place through the cooling
module's lower right side insulator. Do Not Use pli-
ers to open draincock.
CAUTION: Do not pull outward on the draincock
flange while opening. Damage to the draincock
body and O-ring seal may occur
(1) To open the draincock to the minimum drain
position, turn the draincock stem countercolockwise
to the 12:00 o'clock position. For the maximum drain
position, turn draincock stem counterclockwise 180
degrees to the 9:00 o'clock position.
(2) Remove coolant pressure bottle cap and open
the bleed valve.
(3) Remove the cylinder block drain plug(s) located
below each exhaust manifold.
Most service drains are about 80 percent of capac-
ity because not all coolant is drained from system.
For capacity specifications, (Refer to LUBRICATION
& MAINTENANCE - SPECIFICATIONS - FLUID
CAPACITIES)
CAUTION: The cooling system normally operates at
97-124 kPa (14-18 psi) pressure. Exceeding this
pressure may damage the radiator or hoses.
STANDARD PROCEDURE - COOLING SYSTEM
FILLING
WARNING: MAKE SURE ENGINE COOLING SYSTEM
IS COOL BEFORE REMOVING PRESSURE CAP OR
ANY HOSE. SEVERE PERSONAL INJURY MAY
RESULT FROM ESCAPING HOT COOLANT. THE
COOLING SYSTEM IS PRESSURIZED WHEN HOT.
Fig. 4 RADIATOR DRAINCOCK LOCATION
1 - DRAINCOCK STEM
2 - INSULATOR
3 - DRAIN
4 - DRAIN HOLE
CAUTION: Do not use well water, or suspect water
supply in cooling system. Use only a 50/50 mixture
of the specified ethylene glycol type antifreeze/cool-
ant and distilled water. (Refer to LUBRICATION &
MAINTENANCE/FLUID TYPES - DESCRIPTION).
NOTE: COOLING SYSTEM FILL PROCEDURE IS
CRITICAL TO OVERALL COOLING SYSTEM PER-
FORMANCE.
(1) Close radiator draincock by turning the stem
clockwise to the 3:00 o'clock position. Hand tighten
only.
(2) Install engine block drain plugs, if removed.
WARNING: WHEN INSTALLING DRAIN HOSE TO AIR
BLEED VALVE, ROUTE HOSE AWAY FROM ACCES-
SORY DRIVE BELTS, ACCESSORY DRIVE PULLEYS,
AND ELECTRIC COOLING FAN MOTORS.
(3) Attach one end of a 6.35 mm (0.250 in.) ID
clear hose that is approximately 1200 mm (48 in.)
long, to the bleed valve.
• Bleed Valve Location (2.7L): Located on the
water outlet connector at the front of engine (Fig. 5).
• Bleed Valve Location (3.5L): Located on the
lower intake manifold, left of center and below the
upper intake plenum (Fig. 5).
(4) Route hose away from the accessory drive belt,
drive pulleys and electric cooling fan. Place the other
end of hose into a clean container. The hose will pre-
vent coolant from contacting the accessory drive belt
when bleeding the system during the refilling opera-
tion (Fig. 5).
LH