Dodge Neon / Neon SRT-4. Manual — part 434
(3) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY
DRIVE/DRIVE
BELTS
-
REMOVAL).
(4) Raise and support the vehicle.
(5) Disconnect the engine wire harness connectors
from the compressor clutch coil and the A/C high
pressure switch.
(6) Remove the bolts that secures the suction line
and discharge line to the A/C compressor (Fig. 5).
(7) Disconnect the suction line and discharge line
from the A/C compressor and remove and discard the
O-ring seals.
(8) Install plugs in, or tape over the opened A/C
compressor ports and the refrigerant line fittings.
(9) Support the A/C compressor and remove the
A/C compressor mounting bolts (Fig. 6).
(10) Remove the A/C compressor from the engine
compartment.
INSTALLATION
NOTE: If a replacement A/C compressor is being
installed, be certain to check the refrigerant oil level
(refer to Refrigerant Oil Level in this group). Use
only refrigerant oil of the type recommended for the
A/C compressor in the vehicle.
(1) Position the A/C compressor into the engine
compartment.
(2) Install the four bolts that secure the A/C com-
pressor to the mounting bracket. Tighten the bolts to
28 N·m (21 ft. lbs.).
(3) Remove the tape or plugs from the A/C com-
pressor ports and the refrigerant line fittings.
(4) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the refrigerant
line fittings. Use only the specified O-ring seals 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.
(5) Install the suction line and the discharge line
to the A/C compressor.
(6) Install the bolts that secure the suction line
and the discharge line to the A/C compressor. Tighten
the bolts to 12 N·m (108 in. lbs.).
(7) Connect the engine wire harness connectors to
the compressor clutch coil connector and the A/C high
pressure switch.
(8) Lower the vehicle.
(9) Install the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY
DRIVE/DRIVE
BELTS
-
INSTALLATION).
(10) Reconnect the negative battery cable.
(11) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING - STANDARD
PROCEDURE - REFRIGERANT SYSTEM EVACU-
ATE).
(12) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING - STANDARD
PROCEDURE
-
REFRIGERANT
SYSTEM
CHARGE).
Fig. 5 A/C Compressor Lines
1 - LIQUID LINE
2 - SUCTION LINE
3 - BOLTS (2)
4 - A/C COMPRESSOR
5 - DISCHARGE LINE
Fig. 6 A/C Compressor - Typical
1 - CLUTCH COIL WIRE CONNECTOR
2 - DISCHARGE PORT
3 - SUCTION PORT
4 - HIGH PRESSURE CUT-OUT SWITCH
5 - BOLT (4)
6 - A/C COMPRESSOR
7 - BRACKET
24 - 44
PLUMBING
PL/SRT-4
A/C COMPRESSOR (Continued)
A/C CONDENSER
DESCRIPTION
The A/C condenser is located in the front of the
engine cooling radiator. The A/C condenser is a heat
exchanger that allows the high-pressure refrigerant
gas being discharged by the A/C compressor to give
up its heat to the air passing over the condenser fins.
The A/C condenser is integral to the cooling module
which includes the radiator, electric cooling fan, fan
shroud, air seals and an automatic transmission oil
cooler on models so equipped.
OPERATION
When air passes through the condenser fins, the
high-pressure refrigerant gas within the A/C con-
denser gives up its heat. The refrigerant then con-
denses as it leaves the A/C condenser and becomes a
high-pressure liquid. The volume of air flowing over
the condenser fins is critical to the proper cooling
performance of the air conditioning system. There-
fore, it is important that there are no objects placed
in front of the radiator grille openings at the front of
the vehicle or foreign material on the condenser fins
that might obstruct proper air flow. Also, any factory-
installed air seals or shrouds must be properly rein-
stalled following radiator or A/C condenser service.
The A/C condenser cannot be repaired and, if
faulty or damaged, it must be replaced.
REMOVAL
WARNING: Review the warnings and cautions in the
front of this section before performing the following
operation (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - WARNING - A/C SYSTEM) and
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - CAUTION - A/C SYSTEM).
(1) Disconnect and isolate the negative battery
cable.
(2) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING
-
STANDARD
PROCEDURE
-
REFRIGERANT SYSTEM RECOVERY).
(3) Remove the battery support strut.
(4) Remove the bolts that secures the discharge
line and the liquid line to the A/C condenser (Fig. 7).
(5) Disconnect the discharge line and the liquid
line from the A/C condenser and remove and discard
the O-ring seals.
(6) Install plug in, or tape over the opened refrig-
erant line fittings and the condenser ports.
(7) Remove upper radiator mounts.
(8) Remove the screws that secure the A/C con-
denser to the radiator.
(9) Carefully tilt the radiator rearward and remove
the A/C condenser from the engine compartment.
INSTALLATION
NOTE: If the A/C condenser is being replaced, add
30 milliliters (1 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) Tilt the radiator back and position the A/C con-
denser into the engine compartment.
(2) Install the screws that secure the A/C con-
denser to the radiator. Tighten the screws to 2 N·m
(17 in. lbs.).
(3) Install the upper radiator mounts.
(4) Remove the tape or plug from the condenser
ports and the refrigerant line fittings.
(5) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the refrigerant
line fittings.
(6) Connect the discharge line and the liquid line
to the A/C condenser.
(7) Install the bolts that secures the discharge line
and the liquid line to the A/C condenser. Tighten the
bolts to 12 N·m (108 in. lbs.).
(8) Install the battery support strut.
(9) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE)
Fig. 7 A/C Condenser Refrigerant Lines
1 - LIQUID LINE
2 - BOLT (2)
3 - DISCHARGE LINE
4 - A/C CONDENSER
PL/SRT-4
PLUMBING
24 - 45
(10) Recharge the A/C system (Refer to 24 - HEAT-
ING & AIR CONDITIONING - STANDARD PROCE-
DURE - REFRIGERANT SYSTEM CHARGE).
(11) Reconnect the negative battery cable.
A/C DISCHARGE LINE
DESCRIPTION
The A/C discharge line is the refrigerant line that
goes from the A/C compressor to the A/C condenser.
The A/C discharge line has no serviceable parts
except for the rubber O-rings.
The A/C discharge line cannot be repaired and, if
found to be leaking or damaged, it must be replaced.
REMOVAL
WARNING: Review the warnings and cautions in the
front of this section before performing the following
operation (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - WARNING - A/C SYSTEM) and
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - CAUTION - A/C SYSTEM).
(1) Disconnect and isolate the negative battery
cable.
(2) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING
-
STANDARD
PROCEDURE
-
REFRIGERANT SYSTEM RECOVERY).
(3) Remove the bolt that secures the A/C discharge
line to the A/C compressor (Fig. 8).
(4) Disconnect the A/C discharge line from the A/C
compressor and remove and discard the O-ring seal.
(5) Install plug in, or tape over the opened dis-
charge line fitting and the compressor discharge port.
(6) Raise the vehicle on a hoist.
(7) Remove the bolt that secures the A/C discharge
line to the A/C condenser.
(8) Disconnect the A/C discharge line from the A/C
condenser and remove and discard the O-ring seal.
(9) Install plug in, or tape over the opened dis-
charge line fitting and the condenser inlet port.
INSTALLATION
NOTE: Replacement of the refrigerant line O-ring
seals is required anytime a refrigerant line is
opened. Failure to replace the rubber O-ring seals
could result in a refrigerant system leak.
(1) Position the A/C discharge line into the engine
compartment.
(2) Remove the tape or plugs from the condenser
inlet port and the discharge line fitting.
(3) Lubricate a new rubber O-ring seal with clean
refrigerant oil and install it on the discharge line fit-
ting.
(4) Connect the A/C discharge line to the A/C con-
denser.
(5) Install the bolt that secures the A/C discharge
line to the A/C condenser. Tighten the bolt to 12 N·m
(108 in. lbs.).
(6) Lower the vehicle.
(7) Remove the tape or plugs from the compressor
discharge port and the discharge line fitting.
(8) Lubricate a new rubber O-ring seal with clean
refrigerant oil and install it on the discharge line fit-
ting.
(9) Connect the discharge line fitting to the com-
pressor discharge port on the top of the compressor.
(10) Install the bolt that secures the discharge line
fitting to the compressor. Tighten the bolt to 12 N·m
(108 in. lbs.).
(11) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING - STANDARD
PROCEDURE - REFRIGERANT SYSTEM EVACU-
ATE).
(12) Recharge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING - STANDARD
PROCEDURE
-
REFRIGERANT
SYSTEM
CHARGE).
(13) Reconnect the negative battery cable.
Fig. 8 A/C Compressor Lines - Typical
1 - LIQUID LINE
2 - SUCTION LINE
3 - BOLTS (2)
4 - A/C COMPRESSOR
5 - DISCHARGE LINE
24 - 46
PLUMBING
PL/SRT-4
A/C CONDENSER (Continued)
A/C EVAPORATOR
DESCRIPTION
The evaporator (Fig. 9) is located in the HVAC
housing, behind the instrument panel. The evapora-
tor is positioned in the housing so that all air that
enters the housing must pass over the fins of the
evaporator coils before it is distributed through the
system ducts and outlets. However, air passing over
the evaporator fins will only be conditioned when the
compressor is engaged and circulating refrigerant
through the evaporator tubes.
OPERATION
Refrigerant enters the evaporator from the variable
orifice valve as a low-temperature, low-pressure liq-
uid. As air flows over the fins of the evaporator, the
humidity in the air condenses on the fins, and the
heat from the air is absorbed by the refrigerant. Heat
absorption causes the refrigerant to boil and vapor-
ize. The refrigerant becomes a low-pressure gas when
it leaves the evaporator.
The evaporator cannot be repaired and, if faulty or
damaged, it must be replaced.
REMOVAL
WARNING: On vehicles equipped with airbags, dis-
able the airbag system before attempting any steer-
ing wheel, steering column, or instrument panel
component diagnosis or service. Disconnect and
isolate the battery negative (ground) cable, then
wait two minutes for the airbag system capacitor to
discharge before performing further diagnosis or
service. This is the only sure way to disable the air-
bag system. Failure to take the proper precautions
could result in an accidental airbag deployment and
possible personal injury or death.
WARNING: Review safety precautions and warnings
in this group before performing this procedure
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS).
Failure to follow the warnings and cautions could
result in possible personal injury or death.
(1) Remove the HVAC housing (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HVAC HOUSING - REMOVAL).
(2) Disassemble the HVAC housing to access the
A/C evaporator (Refer to 24 - HEATING & AIR CON-
DITIONING/DISTRIBUTION/HVAC
HOUSING
-
DISASSEMBLY).
(3) Lift the A/C evaporator out of the lower half of
the HVAC housing (Fig. 10).
INSTALLATION
NOTE: If the evaporator is being replaced, add 60
milliliters (2 fluid ounces) of refrigerant oil to the
refrigerant system.
(1) Install the evaporator coil into the bottom half
of the HVAC housing.
(2) Assemble the HVAC housing (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HVAC HOUSING - ASSEMBLY).
(3) Install the HVAC housing (Refer to 24 - HEAT-
ING & AIR CONDITIONING/DISTRIBUTION/HVAC
HOUSING - INSTALLATION).
Fig. 9 Evaporator - LHD Shown, RHD Typical
1 - FOAM WRAP
2 - EVAPORATOR
3 - LOWER HVAC HOUSING
4 - BLOWER MOTOR AND WHEEL
Fig. 10 A/C Evaporator - Typical
1 - A/C EVAPORATOR
2 - LOWER HVAC HOUSING
PL/SRT-4
PLUMBING
24 - 47
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст