Chrysler RG Voyager. Manual - part 1232

(15) On RHD models, install the liquid line into

the retaining bracket located at the top of the dash
panel.

(16) If the vehicle is equipped with the optional

rear heating-A/C system, go to Step 17. If the vehicle
does not have the optional rear heating-A/C system,
go to Step 23.

(17) Raise and support the vehicle.
(18) Remove the tape or plugs from the A/C liquid

line extension fitting and the underbody liquid line
fitting.

(19) Lubricate a new rubber O-ring seal with clean

refrigerant oil and install it on the underbody liquid
line fitting.

(20) Connect the A/C liquid line extension fitting

to the underbody liquid line fitting. Tighten the fit-
tings to 23 N·m (17 ft. lbs.).

(21) Install a new tie strap just forward of the con-

nections between the underbody plumbing and the
engine compartment plumbing for the rear heating-
A/C system.

(22) Lower the vehicle.
(23) Reconnect the negative battery cable.
(24) Evacuate the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM EVACUATE).

(25) Charge the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM CHARGE).

RECEIVER / DRIER

DESCRIPTION

The receiver/drier stores unnecessary refrigerant,

filters the refrigerant, helps remove moisture from
the refrigerant and retains any refrigerant 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 between the front and rear sec-
tions of the A/C liquid line.

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.

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 - FRONT - WARNINGS)
and (Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - FRONT - CAUTIONS). Failure to follow
the warnings and cautions could result in possible
personal injury or death.

(1) Recover the refrigerant from the refrigerant

system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - FRONT - STANDARD PROCE-
DURE - REFRIGERANT RECOVERY).

(2) Remove the air cleaner housing from the right

side of the engine compartment.

(3) Remove the bolts that secure both liquid line

fittings to the receiver/drier (Fig. 31).

(4) Disconnect both liquid line fittings from the

receiver/drier and remove and discard the O-ring
seals.

(5) Install plugs in, or tape over the opened liquid

line fittings and the receiver/drier ports.

(6) Remove the two nuts that secure the receiver/

drier mounting bracket to the weld studs on the side
of the right front strut tower and remove the receiv-
er/drier.

INSTALLATION

NOTE: If the receiver/drier is being replaced, add 25
milliliters (0.8 fluid ounce) of refrigerant oil to the
refrigerant system. Use only refrigerant oil of the
type recommended for the A/C compressor in the
vehicle.

(1) Position

the

receiver/drier

and

mounting

bracket onto the weld studs on the side of the right
front strut tower.

(2) Install the two nuts that secure the receiver/

drier mounting bracket to the studs. Tighten the
nuts to 10 N·m (89 in. lbs.).

(3) Remove the tape or plugs from the two liquid

line fittings and the receiver/drier ports.

(4) Lubricate new rubber O-ring seals with clean

refrigerant oil and install them onto the two liquid
line fittings.

(5) Connect the liquid line fittings to the receiver/

drier.

PLUMBING - FRONT

24 - 93

LIQUID LINE (Continued)

(6) Install the bolt that secures each liquid line fit-

ting to the receiver/drier. Tighten the bolts to 11 N·m
(97 in. lbs.).

(7) Install the air cleaner housing.
(8) Evacuate the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM EVACUATE).

(9) Charge the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM CHARGE).

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
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 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.

There are different PAG oils available, and each

contains a different additive package. The Denso
10S17 and 10S20 A/C compressors used in this vehi-
cle are designed to use ND-8 PAG refrigerant oil. Use
only this type of refrigerant oil the refrigerant sys-
tem.

OPERATION

After performing any refrigerant recovery or recy-

cling operation, always replenish the refrigerant sys-
tem with the same amount of the recommended
refrigerant oil as was removed. Too little refrigerant
oil can cause A/C compressor damage, and too much
can reduce A/C system performance.

PAG refrigerant oil is more hygroscopic than min-

eral oil, and will absorb any moisture it comes into
contact with, even moisture in the air. The PAG oil
container should always be kept tightly capped until
it is ready to be used. After use, recap the oil con-
tainer immediately to prevent moisture contamina-
tion.

Fig. 31 Receiver/Drier - LHD Shown, RHD Typical

1 - A/C GROUND STRAP (IF EQUIPPED)
2 - NUT (IF EQUIPPED)
3 - WELD STUD (IF EQUIPPED)
4 - A/C PRESSURE TRANSDUCER
5 - WELD STUD (2)
6 - A/C EXPANSION VALVE
7 - A/C LIQUID LINE (REAR SECTION)
8 - LIQUID LINE EXTENSION (REAR A/C ONLY)
9 - NUT (2)
10 - RECEIVER/DRIER
11 - ROUTING CLIP
12 - A/C LIQUID LINE (FRONT SECTION)

24 - 94

PLUMBING - FRONT

RECEIVER / DRIER (Continued)

STANDARD PROCEDURE

REFRIGERANT OIL LEVEL

When an A/C system is assembled at the factory,

all components except the A/C compressor are refrig-
erant oil free. After the refrigerant system has been
charged and operated, the refrigerant oil in the A/C
compressor is dispersed throughout the refrigerant
system. The receiver/drier, A/C evaporator, A/C con-
denser and the A/C compressor will each retain a sig-
nificant amount of the needed refrigerant oil.

It is important to have the correct amount of

refrigerant oil in the A/C system. This ensures proper
lubrication of the A/C compressor. Too little oil will
result in damage to the A/C compressor, while too
much oil will reduce the cooling capacity of the A/C
system and consequently result in higher discharge
air temperatures.

CAUTION: The oil used in the Denso 10S17 and
10S20 A/C compressors is ND-8 PAG R-134a refrig-
erant oil. Only refrigerant oil of the same type
should be used to service the A/C system. Do not
use any other refrigerant oil. The oil container
should be kept tightly capped until it is ready for
use and then tightly capped after use to prevent
contamination from dirt and moisture. Refrigerant
oil will quickly absorb any moisture it comes in
contact with, therefore, special effort must be used
to keep all R-134a system components moisture-
free. Moisture in the refrigerant oil is very difficult
to remove and will cause a reliability problem with
the A/C compressor.

NOTE: Most reclaim/recycling equipment will mea-
sure the lubricant being removed during recovery.
This amount of lubricant should be added back into
the system. Refer to the reclaim/recycling equip-
ment manufacturers instructions.

It will not be necessary to check the oil level in the

A/C compressor or to add oil, unless there has been
an oil loss. An oil loss may occur due to a rupture or
leak from a refrigerant line, a connector fitting, a
component, or a component seal. If a leak occurs, add
30 milliliters (1 fluid ounce) of refrigerant oil to the
refrigerant system after the repair has been made.
Refrigerant oil loss will be evident at the leak point
by the presence of a wet, shiny surface around the
leak.

Refrigerant oil must be added when a receiver/

drier, A/C evaporator or A/C condenser is replaced.
See the Refrigerant Oil Capacities chart. When an
A/C compressor is replaced, the refrigerant oil must
be drained from the old compressor and measured.
Drain all of the refrigerant oil from the new A/C com-

pressor, then fill the new compressor with the same
amount of refrigerant oil that was drained out of the
old compressor.

REFRIGERANT OIL CAPACITIES

Front A/C

Front & Rear

A/C

COMPONENT

fl oz

Total System Fill

180

6.1

230

7.8

Receiver/Drier

0.8

A/C Condenser

1.7

Front Evaporator

1.7

Rear Evap. (including
underbody lines)

N/A

1.7

A/C Compressor

Drain and measure the oil
from the old A/C compressor
- See text above.

SERVICE PORT VALVE CORE

DESCRIPTION

Refrigerant system service ports are used to

recover, recycle, evacuate, charge and test the A/C
refrigerant system. Unique sizes are used on the two
service ports for the R-134a refrigerant system to
ensure the system is not accidentally contaminated
with R-12 refrigerant or by service equipment used
for R-12 refrigerant.

The high side service port is located on the front

section of the liquid line near the receiver/drier. The
low side service port is located on the A/C suction
line near the A/C compressor. The low side A/C ser-
vice port valve core is serviceable, however, the high
side A/C service port valve core is not. If the high
side service port valve core is faulty or damaged, the
front section of the liquid line will require replace-
ment.

NOTE: The protective cap aids in service port seal-
ing and helps protects the refrigerant system from
contamination. Remember to always reinstall the
protective cap onto the service port when refriger-
ant system service is complete.

Each of the service ports has a threaded plastic

protective cap installed over it from the factory. The
service port caps are serviceable items.

PLUMBING - FRONT

24 - 95

REFRIGERANT OIL (Continued)

REMOVAL

NOTE: The low side A/C service port valve core is
serviceable, however, the high side A/C service port
valve core is not. If the high side service port valve
core is faulty or damaged, the front section of the
liquid line will require replacement.

(1) Remove the protective cap from the low side

service port located on the suction line near the A/C
compressor (Fig. 32).

(2) Recover the refrigerant from the refrigerant

system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - FRONT - STANDARD PROCE-
DURE - REFRIGERANT RECOVERY).

(3) Using a Schrader-type valve core tool, remove

the valve core from the service port.

(4) Install a plug in or tape over the opened ser-

vice port(s).

INSTALLATION

(1) Lubricate the low side A/C service port valve

core with clean refrigerant oil prior to installation.

Use only refrigerant oil of the type recommended for
the compressor in the vehicle.

(2) Remove the tape or plug from the A/C service

port located on the suction line near the A/C com-
pressor.

(3) Using a standard Schrader-type valve core tool,

install and tighten the replacement valve core into
the low side A/C service port.

CAUTION: A valve core that is not fully seated in
the A/C service port can result in damage to the
valve during refrigerant system evacuation and
charge. Such damage may result in a loss of sys-
tem refrigerant while uncoupling the charge adapt-
ers.

(4) Evacuate the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM EVACUATE).

(5) Charge the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM CHARGE).

(6) Reinstall the protective cap onto the A/C ser-

vice port.

SUCTION LINE

REMOVAL

NOTE: The front suction line includes the low side
service port near the A/C compressor. On models
equipped with the rear A/C system, the front suc-
tion line also includes a suction line hose and tube
extension that connects the front suction line to the
suction line for the rear A/C system.

(1) Recover the refrigerant from the refrigerant

system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - FRONT - STANDARD PROCE-
DURE - REFRIGERANT RECOVERY).

(2) Disconnect and isolate the negative battery

cable.

Fig. 32 A/C Service Port-Typical

1 - PROTECTIVE CAP
2 - SERVICE PORT
3 - VALVE CORE

24 - 96

PLUMBING - FRONT

SERVICE PORT VALVE CORE (Continued)

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