Chrysler 300M 2002 Service Manual page 1675

24 - 38 PLUMBING
SUCTION LINE (Continued)
Fig. 13 SUCTION LINE 2.7L
1 - SERVICE PORT
2 - SUCTION LINE
3 - EXPANSION VALVE
4 - LIQUID LINE
INSTALLATION
WARNING: REVIEW THE WARNINGS IN THE FRONT
OF THIS SECTION BEFORE PERFORMING THE
FOLLOWING OPERATION. (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - WARNING)
Any kinks or sharp bends in the refrigerant plumb-
ing will reduce the capacity of the entire air condi-
tioning system. Kinks and sharp bends reduce the
flow of refrigerant in the system. A good rule for the
flexible hose refrigerant lines is to keep the radius of
all bends at least ten times the diameter of the hose.
In addition, the flexible hose refrigerant lines should
be routed so they are at least 80 millimeters (3
inches) from the exhaust manifold.
High pressures are produced in the refrigerant sys-
tem when the air conditioning compressor is operat-
ing. Extreme care must be exercised to make sure
that each of the refrigerant system connections is
pressure-tight and leak free. It is a good practice to
inspect all flexible hose refrigerant lines at least once
a year to make sure they are in good condition and
properly routed.
(1) Position the suction line in the vehicle.
(2) Install the suction line fitting to the manifold
on the compressor. Tighten the mounting bolt to 23
N·m (17 ft. lbs.). On a 2.7L, tighten the mid-line
retaining nut and frame rail screw to 7 N·m (5 ft.
lbs.).
(3) Install the engine air inlet tube and air distri-
bution duct(Refer to 9 - ENGINE/AIR INTAKE SYS-
TEM/AIR CLEANER ELEMENT - INSTALLATION).
(4) Connect the suction line to the expansion
valve. Tighten the retaining nut to 23 N·m (17 ft.
lbs.).
(5) Evacuate the refrigerant system. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE)
(6) Charge the refrigerant system. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM CHARGE)
A/C EVAPORATOR
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN AN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
WARNING: REVIEW THE WARNINGS IN THE FRONT
OF THIS SECTION BEFORE PERFORMING THE
FOLLOWING OPERATION. (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - WARNING)
The HVAC housing must be removed from the
vehicle when replacing the evaporator.
(1) Open the hood and disconnect the negative bat-
tery cable remote terminal from the remote battery
post.
(2) Remove the HVAC housing from vehicle. (Refer
to 24 - HEATING & AIR CONDITIONING/DISTRI-
BUTION/HVAC HOUSING - REMOVAL)
(3) Remove the recirculation door actuator(Refer to
24 - HEATING & AIR CONDITIONING/CONTROLS/
RECIRCULATION DOOR ACTUATOR - REMOVAL).
(4) Remove the recirculation door and housing.
(5) Remove the upper HVAC housing retaining
screws(Refer to 24 - HEATING & AIR CONDITION-
ING/DISTRIBUTION/HVAC HOUSING - DISAS-
SEMBLY).
LH