Dodge Ram Truck 1500-2500-3500. Manual — part 2061
REMOVAL
HVAC HOUSING ASSEMBLY
WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (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.
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
negative battery (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 airbag system. Failure to
take the proper precautions could result in accidental airbag deployment and possible personal injury or
death.
NOTE: The HVAC housing must be removed from the vehicle and disassembled for service of the A/C evap-
orator, evaporator temperature sensor, mode-air and blend-air doors.
1. Recover the refrigerant from the refrigerant system
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING
-
STANDARD
PROCEDURE
-
REFRIGERANT SYSTEM RECOVERY).
2. Drain the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE - COOL-
ING SYSTEM DRAIN).
3. Disconnect and isolate the negative battery cable.
4. Disconnect the A/C liquid line and the A/C accumu-
lator from the A/C evaporator (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING/LINE-A/C
LIQUID - REMOVAL) and (Refer to 24 - HEATING
& AIR CONDITIONING/PLUMBING/ACCUMULA-
TOR-A/C - REMOVAL).
5. Disconnect the heater hoses from the heater core
tubes.
6. Remove the powertrain control module (PCM) to
gain access to the two nuts (3) that secure the
HVAC housing (1) to the engine compartment side of the dash panel (2) and remove the nuts (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL).
24 - 244
DISTRIBUTION
DR/DH
7. Remove the instrument panel from the passenger
compartment (Refer to 23 - BODY/INSTRUMENT
PANEL ASSEMBLY - REMOVAL).
8. Remove the bolt (5) that secures the HVAC hous-
ing (4) to the floor bracket (6).
9. Remove the two nuts (3 and 7) that secure the
HVAC housing to the passenger compartment side
of the dash panel (1).
10. Pull the HVAC housing assembly rearward and
remove the housing assembly from the passenger
compartment.
11. If required, remove the fresh air inlet (2) from the
dash panel (1).
AIR INLET HOUSING
WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (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.
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
negative battery (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 airbag system. Failure to
take the proper precautions could result in accidental airbag deployment and possible personal injury or
death.
NOTE: The air inlet housing must be removed from HVAC housing and disassembled for service of the
recirculation-air door.
1. Remove the HVAC housing assembly (Refer to 24
- HEATING & AIR CONDITIONING/DISTRIBU-
TION/HOUSING-HVAC - HVAC HOUSING ASSEM-
BLY - REMOVAL).
2. Remove the recirculation door actuator (1) from the
air inlet housing (2) and disconnect the HVAC wire
harness (4) from the actuator.
3. Remove the two screws (3) that secure the rear of
the air inlet housing to the top of the HVAC housing
DR/DH
DISTRIBUTION
24 - 245
(5).
4. Release the two retaining clips (1) that secure the
front of the air inlet housing (2) to the top of the
HVAC housing (3) and remove the air inlet housing.
NOTE: If the foam seal on the air inlet housing is
deformed or damaged, it must be replaced.
5. If required, disassemble the air inlet housing (Refer
to 24 - HEATING & AIR CONDITIONING/DISTRI-
BUTION/HOUSING-HVAC ASSEMBLY - AIR INLET
HOUSING - DISASSEMBLY).
DISASSEMBLY
HVAC HOUSING
NOTE: The HVAC housing must be removed from the vehicle and disassembled for service of the A/C evap-
orator, evaporator temperature sensor, mode-air and blend-air doors.
1. Remove the HVAC housing assembly and place it
on a workbench (Refer to 24 - HEATING & AIR
CONDITIONING/DISTRIBUTION /HOUSING-HVAC
- HVAC HOUSING ASSEMBLY - REMOVAL).
2. Disconnect the HVAC wire harness connectors
from the mode door actuators (1), blend door
actuators (2) and the recirculation door actuator
(3).
3. Remove the screws that secure the mode door
actuators and the blend door actuators to the
HVAC housing (5) and remove the actuators.
4. Remove the screws that secure the recirculation
door actuator to the air inlet housing (4) and
remove the actuator.
24 - 246
DISTRIBUTION
DR/DH
5. Disconnect the wire harness connectors (1 and 3)
from the blower motor resistor (7) and the blower
motor (2).
6. Remove the screws (4) that secure the blower
motor to the HVAC housing (5) and remove the
blower motor.
7. Remove the screws (6) that secure the blower
motor resistor to the HVAC housing and remove
the resistor.
8. Disconnect the HVAC wire harness (1) from the
evaporator temperature sensor (2) and remove the
HVAC wiring harness from the HVAC housing (4).
9. Remove the air inlet housing (3) from the HVAC
housing (Refer to 24 - HEATING & AIR CONDI-
TIONING/DISTRIBUTION/HOUSING-HVAC - AIR
INLET HOUSING - REMOVAL).
DR/DH
DISTRIBUTION
24 - 247
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст