Chrysler RG Voyager. Manual — part 1230
(3) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the evaporator
inlet and outlet tube fittings.
(4) Position the A/C expansion valve onto the evap-
orator inlet and outlet tube fittings.
(5) Install the two screws that secure the A/C
expansion valve to the evaporator tube tapping plate
plate. Tighten the screws to 11 N·m (97 in. lbs.).
(6) On RG models, connect the HVAC wire harness
connector to the evaporator temperature sensor.
(7) Remove the tape or plugs from the front liquid
line rear section and suction line fittings for the
expansion valve and both ports on the front of the
expansion valve.
(8) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the front liquid
line rear section and suction line fittings for the
expansion valve.
(9) Connect the A/C liquid and suction lines to the
expansion valve.
(10) Install the nut that secures the A/C liquid and
suction lines to the expansion valve. Tighten the nut
to 23 N·m (17 ft. lbs.).
(11) Remove the tape or plugs from the liquid line
rear section fitting and the receiver/drier outlet port.
(12) Lubricate a new rubber O-ring seal with clean
refrigerant oil and install it on the liquid line fitting.
(13) Connect the liquid line fitting to the receiver/
drier outlet port.
(14) Install the screw that secures the liquid line
fitting to the receiver/drier. Tighten the screw to 11
N·m (97 in. lbs.).
(15) Connect the wire harness connector to the A/C
pressure transducer.
(16) Install the drain tube to the wiper module.
(17) Install the air cleaner housing and air inlet
tube (Refer to 9 - ENGINE/AIR INTAKE SYSTEM/
AIR CLEANER HOUSING - INSTALLATION).
(18) Reconnect the negative battery cable.
(19) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM EVACUATE).
(20) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
FRONT - STANDARD PROCEDURE - REFRIGER-
ANT SYSTEM CHARGE).
HEATER CORE
DESCRIPTION
The front heater core (Fig. 18) is mounted into the
HVAC air distribution housing, located behind the
instrument
panel.
The
heater
core
is
a
heat
exchanger made of rows of tubes and fins. The heater
core tubes are attached to the heater core by a seal-
ing plate and bolt.
The heater core can be serviced without removing
the air distribution housing from the vehicle.
OPERATION
Engine coolant is circulated through the heater
hoses to the heater core at all times. As the coolant
flows through the heater core, heat is removed from
the engine and is transferred to the heater core tubes
and fins. Air directed through the heater core picks
up the heat from the heater core fins. The blend-air
door(s) allows control of the heater output air tem-
perature by regulating the amount of air flowing
through the heater core. The blower motor speed con-
trols the volume of air flowing through the HVAC
housing.
The heater core cannot be repaired and, if faulty or
damaged, it must be replaced.
Fig. 18 Heater Core
1 - FRONT HEATER CORE
2 - HEATER CORE TUBES
3 - SEALING PLATE
4 - BOLT
RS
PLUMBING - FRONT
24 - 85
EXPANSION VALVE (Continued)
REMOVAL
FRONT HEATER CORE TUBES
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 accidental airbag deployment and
possible personal injury or death.
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) Drain the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE - COOLING
SYSTEM DRAIN).
(2) Disconnect and isolate the negative battery
cable.
(3) Disconnect the heater hoses from the heater
core tubes (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - FRONT/HEATER INLET
HOSE - REMOVAL) and (Refer to 24 - HEATING &
AIR
CONDITIONING/PLUMBING
-
FRONT/
HEATER RETURN HOSE - REMOVAL).
(4) Remove the silencer from beneath the driver
side end of the instrument panel.
NOTE: Take the proper precautions to protect the
carpeting below the heater core from spilled engine
coolant and have absorbent toweling readily avail-
able to clean up any spills.
(5) Remove the screw that secures the heater core
tube sealing plate to the heater core (Fig. 19).
(6) Push both heater core tubes simultaneously
toward the dash panel and disengage the tubes from
the heater core.
(7) Install plugs in, or tape over the opened heater
core tube fittings and both heater core ports.
(8) Pull both heater core tubes simultaneously
away from the distribution housing and rearward to
disengage tubes from the dash panel seal and remove
the tubes.
FRONT HEATER CORE
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 accidental airbag deployment and
possible personal injury or death.
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) Remove the silencer boot fasteners located
around the base of the lower steering shaft from the
dash panel so that it may be pushed aside.
(2) Remove the brake lamp switch from its mount-
ing bracket (Refer to 8 - ELECTRICAL/LAMPS/
LIGHTING - EXTERIOR/BRAKE LAMP SWITCH -
REMOVAL).
(3) Disconnect the power brake booster input rod
(push rod) from the pin on the brake pedal arm
(Refer to 5 - BRAKES - ABS/HYDRAULIC/ME-
Fig. 19 Heater Core Tubes
1 - SEAL
2 - HEATER CORE TUBES
3 - SCREW
4 - HEATER CORE
5 - DISTRIBUTION HOUSING
6 - SEALING PLATE
24 - 86
PLUMBING - FRONT
RS
HEATER CORE (Continued)
CHANICAL/POWER
BRAKE
BOOSTER
-
REMOVAL).
NOTE: Take the proper precautions to protect the
carpeting below the heater core from spilled engine
coolant and have absorbent toweling readily avail-
able to clean up any spills.
(4) Remove the heater core tubes (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
FRONT/HEATER CORE - HEATER CORE TUBES -
REMOVAL).
(5) Remove the two screws that secure the heater
core mounting plate to the HVAC air distribution
housing.
(6) While pulling the accelerator pedal upward
(Fig. 20) and pushing the brake pedal downward
(Fig. 21) for clearance, remove the heater core from
the air distribution housing.
INSTALLATION
FRONT HEATER CORE TUBES
(1) Remove the plugs or tape from both heater core
tube fittings and both heater core ports.
(2) Position the heater core tubes and sealing plate
to the dash panel, below the instrument panel.
(3) Install both heater core tubes simultaneously
through the dash panel seal.
(4) Position both heater core tubes and the sealing
plate simultaneously onto the heater core.
NOTE: The heater core tubes each have a slot that
must be indexed to a location tab within each of the
heater core ports. Adjust the position of the tubes
as required so that the sealing plate fits flush
against the heater core supply and return ports,
which indicates that the tubes are properly indexed.
(5) Index both heater core tubes to the heater core
ports.
(6) Install the bolt that secures the heater core
tube sealing plate to the heater core. Tighten the bolt
to 3 N·m (27 in. lbs.).
(7) Install the silencer under the driver side end of
the instrument panel.
(8) Connect the heater hoses to the heater hose
tubes (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - FRONT/HEATER INLET HOSE -
INSTALLATION) and (Refer to 24 - HEATING &
AIR
CONDITIONING/PLUMBING
-
FRONT/
HEATER RETURN HOSE - INSTALLATION).
(9) Reconnect the negative battery cable.
(10) Refill the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE - COOLING
SYSTEM REFILL).
FRONT HEATER CORE
(1) While pushing the brake pedal downward and
pulling the accelerator pedal upward for clearance,
install the heater core into the HVAC air distribution
housing.
(2) Install the two screws that secure the heater
core to the air distribution housing. Tighten the
screws to 2 N·m (17 in. lbs.).
(3) Install the heater core tubes (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
FRONT/HEATER CORE - INSTALLATION).
(4) Connect the power brake booster input rod
(push rod) to the pin on the brake pedal arm (Refer
to
5
-
BRAKES/HYDRAULIC/MECHANICAL/
POWER BRAKE BOOSTER - INSTALLATION).
(5) Install the brake lamp switch into its mounting
bracket (Refer to 8 - ELECTRICAL/LAMPS/LIGHT-
ING
-
EXTERIOR/BRAKE
LAMP
SWITCH
-
INSTALLATION).
Fig. 20 Accelerator Pedal
1 - HEATER CORE
Fig. 21 Brake Pedal
1 - HEATER CORE
2 - BRAKE PEDAL
RS
PLUMBING - FRONT
24 - 87
HEATER CORE (Continued)
(6) Install the silencer boot around the base of the
lower steering shaft on the dash panel.
(7) Reconnect the negative battery cable.
(8) If the heater core is being replaced, flush the
cooling system (Refer to 7 - COOLING - STANDARD
PROCEDURE - COOLING SYSTEM CLEANING/
REVERSE FLUSHING).
(9) Refill the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE - COOLING
SYSTEM REFILL).
HEATER INLET HOSE
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.
NOTE: The heater inlet hose is constructed from
formed steel tubing and rubber hoses. Depending
on application, the ends are secured to the heater
core, engine oil cooler or the engine by spring ten-
sion clamps.
(1) Drain the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE - COOLING
SYSTEM DRAIN).
(2) Using spring tension clamp pliers, compress
and slide the clamps off of each end of the hose being
removed (Fig. 22), (Fig. 23) or (Fig. 24).
CAUTION:
DO NOT apply excessive pressure on heater tubes
or
connections
when
removing
heater
hoses.
Excessive pressure may damage or deform the
tubes/heater core, causing an engine coolant leak.
(3) Disconnect each hose end by carefully twisting
the hose back and forth on the tube or nipple, while
gently pulling it away from the end of the tube or
nipple.
NOTE:
Replacement of the heater inlet hoses will be
required if the hose ends are cut for removal.
(4) If necessary, carefully cut the hose end and
peel the hose off of the tube or nipple.
INSTALLATION
(1) Using spring tension clamp pliers, compress
and slide each clamp away from the end of the hose
being installed.
(2) Install each hose by carefully twisting the hose
back and forth while gently pushing it onto the tube
or nipple end.
(3) Using spring tension clamp pliers, compress
and slide the clamps onto each end of the hose being
installed.
Fig. 22 Heater Inlet Hose - 2.4L Shown, 2.5L Typical
1 - ENGINE OUTLET NIPPLE
2 - HEATER INLET HOSE
3 - HEATER CORE OUTLET
4 - HEATER CORE INLET
5 - SCREW
6 - HEATER TUBE
7 - HEATER RETURN HOSE
8 - ENGINE INLET NIPPLE
Fig. 23 Heater Inlet Hose - 3.3L/3.8L W/O Rear
Heater
1 - ENGINE OUTLET NIPPLE
2 - HEATER CORE OUTLET
3 - HEATER CORE INLET
4 - HEATER RETURN TUBE (TYPICAL)
24 - 88
PLUMBING - FRONT
RS
HEATER CORE (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст