Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 744
(5) If equipped with the 2.0L, 2.4L NA or the 2.7L
engine, raise and support the vehicle and remove the
nut that secures the liquid line (Fig. 23) to the A/C
condenser.
(6) Remove the liquid line from the A/C condenser
and remove and discard the O-ring seal.
(7) Install plugs in, or tape over the opened liquid
line fitting and condenser port.
(8) Remove the bolt that secures the receiver/drier
to the engine coolant reservoir.
(9) Remove the bolt that secures the refrigerant
line retainer bracket to the right shock tower.
(10) Remove the liquid line from the refrigerant
line retainer bracket.
(11) Remove the nut that secures the refrigerant
line tapping plate to the A/C expansion valve (Fig.
24).
(12) Disconnect the suction line and the liquid line
from the A/C expansion valve and remove and dis-
card the O-ring seals.
(13) Install plugs in, or tape over the suction and
liquid line fittings and both expansion valve ports.
(14) Remove the liquid line and receiver/drier
assembly from the engine compartment.
INSTALLATION
(1) Position
the
liquid
line
and
receiver/drier
assembly into the engine compartment.
(2) Remove the tape or plugs from the suction and
liquid line fittings and both expansion valve ports.
(3) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the liquid and suc-
tion line fittings. Use only the specified O-rings as
they are made of a special material for the R-134a
system. Use only refrigerant oil of the type recom-
mended for the A/C compressor in the vehicle.
(4) Connect the liquid line and suction line fittings
to the A/C expansion valve.
(5) Install the nut that secures the refrigerant line
tapping plate to the A/C expansion valve. Tighten the
nut to 23 N·m (17 ft. lbs.).
(6) Install the liquid line into the refrigerant line
retainer bracket.
(7) Position the refrigerant line retainer bracket
onto the right shock tower and install the bolt
securely.
(8) Position the receiver/drier mounting bracket to
the engine coolant reservoir and install the bolt
securely.
(9) Remove the tape or plugs from the liquid line
fitting and the condenser port.
(10) Lubricate a new rubber O-ring seal(s) with
clean refrigerant oil and install it onto the liquid line
fitting. Use only the specified O-ring as it is made of
a special material for the R-134a system. Use only
Fig. 23 A/C Condenser - All Other Engines
1 - NUT (2)
2 - BOLT (2)
3 - A/C CONDENSER
4 - A/C DISCHARGE LINE
5 - A/C LIQUID LINE
6 - A/C PRESSURE TRANSDUCER
Fig. 24 A/C Expansion Valve-Tapping Plate
1 - NUT
2 - TAPPING PLATE
3 - A/C EXPANSION VALVE
4 - A/C LIQUID LINE
5 - A/C SUCTION LINE
JR
PLUMBING
24 - 75
LIQUID LINE (Continued)
refrigerant oil of the type recommended for the A/C
compressor in the vehicle.
(11) If equipped with the 2.0L, 2.4L NA or the 2.7L
engine, raise and support the vehicle and install the
liquid line and the nut to the A/C condenser. Tighten
the nut to 22 N·m (16 ft. lbs.).
(12) If equipped with the 2.4L Turbo engine, con-
nect the liquid line fitting to the A/C condenser and
install the secondary retaining clip onto the spring-
lock coupler (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING/REFRIGERANT
LINE
COUPLER - INSTALLATION).
(13) Reconnect the negative battery cable.
(14) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE).
(15) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM CHARGE).
RECEIVER / DRIER
DESCRIPTION
The receiver/drier (Fig. 25) stores unnecessary
refrigerant, filters the refrigerant, helps remove
moisture from the refrigerant and retains any refrig-
erant vapor that may leave the A/C condenser until it
becomes a liquid.
The receiver/drier is installed on the high-side of
the A/C system and is serviced only as part of the liq-
uid line (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING/LIQUID
LINE
-
DESCRIPTION).
OPERATION
The receiver/drier performs a filtering action to
prevent foreign material in the refrigerant from con-
taminating the A/C expansion valve. Refrigerant
enters the receiver/drier as a high-pressure, low tem-
perature liquid. Desiccant inside the receiver/drier
absorbs any moisture which may have entered and
become trapped within the refrigerant system. In
addition, during periods of high demand operation of
the A/C system, the receiver/drier acts as a reservoir
to store surplus refrigerant.
The receiver/drier cannot be repaired. If the receiv-
er/drier is faulty or damaged, or if the refrigerant
system has been contaminated or left open to the
atmosphere for an indeterminable period or if the
A/C compressor has failed, it must be replaced.
REFRIGERANT
DESCRIPTION
The refrigerant used in this air conditioning sys-
tem is a HydroFluoroCarbon (HFC), type R-134a.
Unlike R-12, which is a ChloroFluoroCarbon (CFC),
R-134a refrigerant does not contain ozone-depleting
chlorine. R-134a refrigerant is a non-toxic, non-flam-
mable, clear, and colorless liquefied gas.
Even though R-134a does not contain chlorine, it
must be reclaimed and recycled just like CFC-type
refrigerants. This is because R-134a is a greenhouse
gas and can contribute to global warming.
OPERATION
R-134a refrigerant is not compatible with R-12
refrigerant in an A/C system. Even a small amount of
R-12 refrigerant added to an R-134a refrigerant sys-
tem will cause A/C compressor failure, refrigerant oil
sludge or poor A/C system performance. In addition,
the polyalkylene glycol (PAG) synthetic refrigerant
oils used in an R-134a refrigerant system are not
Fig. 25 Receiver/Drier with Refrigerant Lines -
Typical
1 - CONDENSER FITTING
2 - LIQUID LINE
3 - RECEIVER/DRIER
4 - HIGH SIDE SERVICE PORT
5 - MOUNTING BRACKET
6 - INSULATOR (2)
7 - RETAINER BRACKET
8 - TAPPING PLATE
9 - LOW SIDE SERVICE PORT
10 - A/C SUCTION LINE
11 - SUCTION LINE FITTING
24 - 76
PLUMBING
JR
LIQUID LINE (Continued)
compatible with the mineral-based refrigerant oils
used in an R-12 refrigerant system.
R-134a refrigerant system service ports, service
tool couplers and refrigerant dispensing bottles have
all been designed with unique fittings to ensure that
an R-134a refrigerant system is not accidentally con-
taminated with the wrong refrigerant (R-12). There
are also labels posted in the engine compartment of
the vehicle and on the A/C compressor to identify
that the A/C system is equipped with R-134a refrig-
erant.
REFRIGERANT LINE COUPLER
DESCRIPTION
On vehicles equipped with the 2.4L Turbo engine, a
spring-lock type refrigerant line coupler is used to
connect the liquid line to the A/C condenser (Fig. 26).
A secondary retaining clip is installed over the con-
nected coupler for added protection.
The spring-lock refrigerant line coupler requires a
special disconnect tool for disengaging the two cou-
pler halves.
OPERATION
The spring-lock coupler is held together by a garter
spring inside a circular cage on the male half of the
fitting (Fig. 27). When the two coupler halves are
connected, the flared end of the female fitting slips
behind the garter spring inside the cage on the male
fitting. The garter spring and cage prevent the flared
end of the female fitting from pulling out of the cage.
Two O-rings on the male half of the fitting are
used to seal the connection. These O-rings are com-
patible with R-134a refrigerant and must be replaced
with O-rings made of the same material.
Secondary clips are installed over the two con-
nected coupler halves at the factory for added blowoff
protection. In addition, some models have a plastic
ring that is used at the factory as a visual indicator
to confirm that these couplers are connected. After
the coupler is connected, the plastic indicator ring is
no longer needed; however, it will remain on the
refrigerant line near the coupler cage.
REMOVAL
WARNING: Refer to the applicable warnings and
cautions for this system before performing the fol-
lowing operation (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - WARNINGS) and (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTIONS). Failure to follow the warnings and cau-
tions could result in possible personal injury or
death.
Fig. 26 A/C Condenser - 2.4L Turbo Engine
1 - LIQUID LINE
2 - SECONDARY RETAINING CLIP
3 - A/C CONDENSER
4 - NUT
5 - BOLT
6 - A/C PRESSURE TRANSDUCER
7 - DISCHARGE LINE
Fig. 27 Spring-Lock Coupler - Typical
1 - MALE HALF SPRING-LOCK COUPLER
2 - FEMALE HALF SPRING-LOCK COUPLER
3 - SECONDARY CLIP
4 - CONNECTION INDICATOR RING
5 - COUPLER CAGE
6 - GARTER SPRING
7 - COUPLER CAGE
8 - O-RING SEALS
JR
PLUMBING
24 - 77
REFRIGERANT (Continued)
(1) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING
-
STANDARD
PROCEDURE
-
REFRIGERANT SYSTEM RECOVERY).
(2) Remove the secondary retaining clip from the
spring-lock coupler.
(3) Fit the proper size A/C line disconnect tool
(Special Tool Kit 7193) over the spring-lock coupler
cage (Fig. 28).
(4) Close the two halves of the A/C line disconnect
tool around the spring-lock coupler.
(5) Push the A/C line disconnect tool into the open
side of the coupler cage to expand the garter spring.
Once the garter spring is expanded and while still
pushing the disconnect tool into the open side of the
coupler cage, pull on the refrigerant line attached to
the female half of the coupler fitting until the flange
on the female fitting is separated from the garter
spring and cage on the male fitting within the dis-
connect tool.
NOTE: The garter spring may not release if the A/C
line disconnect tool is cocked while pushing it into
the coupler cage opening.
(6) Open and remove the A/C line disconnect tool
from the disconnected spring-lock coupler.
(7) Complete the separation of the two halves of
the coupler fitting.
INSTALLATION
(1) Check to ensure that the garter spring is
located within the cage of the male coupler fitting,
and that the garter spring is not damaged.
(a) If the garter spring is missing, install a new
spring by pushing it into the coupler cage opening.
(b) If the garter spring is damaged, remove it
from the coupler cage with a small wire hook (DO
NOT use a screwdriver) and install a new garter
spring.
(2) Clean any dirt or foreign material from both
halves of the coupler fitting.
(3) Install new O-rings on the male half of the cou-
pler fitting.
CAUTION: Use only the specified O-rings as they
are made of a special material for the R-134a sys-
tem. The use of any other O-rings may allow the
connection to leak intermittently during vehicle
operation.
(4) Lubricate the male fitting and O-rings, and the
inside of the female fitting with clean R-134a refrig-
erant oil. Use only refrigerant oil of the type recom-
mended for the compressor in the vehicle.
(5) Fit the female half of the coupler fitting over
the male half of the fitting.
(6) Push together firmly on the two halves of the
coupler fitting until the garter spring in the cage on
the male half of the fitting snaps over the flanged
end on the female half of the fitting.
(7) Ensure that the spring-lock coupler is fully
engaged by trying to separate the two coupler halves.
This is done by pulling the refrigerant lines on either
side of the coupler away from each other.
(8) Reinstall the secondary retaining clip over the
spring-lock coupler cage.
(9) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE).
(10) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM CHARGE).
REFRIGERANT OIL
DESCRIPTION
The refrigerant oil used in R-134a refrigerant sys-
tems is a synthetic-based, polyalkylene glycol (PAG),
wax-free lubricant. Mineral-based R-12 refrigerant
oils are not compatible with PAG oils, and should
never be introduced to an R-134a refrigerant system.
Fig. 28 Refrigerant Line Spring-Lock Coupler
Disconnect
24 - 78
PLUMBING
JR
REFRIGERANT LINE COUPLER (Continued)
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