Daewoo Nubira. Manual — part 182
7A – 24
I
HEATING AND VENTILATION SYSTEM
DAEWOO V–121 BL4
HIGH–BLOWER RELAY
Removal Procedure
1. Disconnect the negative battery cable.
2. Locate the high–blower relay in the connector box
under the driver’s side of the instrument panel.
Note the colors of the wires entering the connector
from underneath: RED, BLK, PPL, ORN.
3. Pull out the relay.
Installation Procedure
1. Align the relay contacts with the relay terminal
slots.
2. Push the relay firmly into the base. The relay must
be seated and flush with the base edge.
3. Connect the negative battery cable.
BLOWER RESISTOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the glove box. Refer to Section 9E, Instru-
mentation/Driver Information.
3. Remove the footwell upper cover. Refer to Section
9E, Instrumentation/Driver Information.
4. Disconnect the electrical connector at the resistor.
5. Remove the mount screws from the resistor.
6. Remove the resistor from the heater/air distributor
case by gently pulling the resistor downward.
HEATING AND VENTILATION SYSTEM 7A – 25
DAEWOO V–121 BL4
Installation Procedure
1. Install the new resistor into the heater/air distributor
case with the screws.
Tighten
Tighten the blower resistor retaining screws to 6 N
S
m
(53 lb–in).
2. Connect the electrical connector at the resistor.
3. Connect the negative battery cable.
4. Confirm the proper performance of the blower.
5. Replace the footwell upper cover. Refer to Section
9E, Instrumentation/Driver Information.
6. Replace the glove box. Refer to Section 9E, Instru-
mentation/Driver Information.
HEATER HOSES
Removal Procedure
1. Partially drain the cooling system. Refer to Section
1D, Engine Cooling.
2. Compress and slide the two heater hose spring
clamps at the bulkhead rearward.
3. Gently twist the hose from the left to the right and
back again to loosen the bond between the hose
and the tube.
4. Remove the end of the hose from the tube.
5. Repeat Steps 3 and 4 with the other hose.
6. Compress the heater hose spring clamp on the inlet
coolant line and slide the clamp rearward.
7. Remove the heater hose from the vehicle.
8. Compress the heater hose spring clamp at the con-
nection below the intake manifold and slide the
clamp rearward.
9. Remove the heater hose from the vehicle.
Installation Procedure
1. Install the left heater hose to the coolant inlet line
fitting. Slide the end of the heater hose over the
coolant fitting until the hose is seated.
2. Install the right heater hose to the fitting below the
intake manifold. Slide the end of the heater hose
over the fitting until it is seated.
3. Install and seat the other end of each heater hose.
4. Compress and slide the spring clamps into position
on the heater hoses and release the tension.
5. Fill the cooling system. Refer to Section 1D, Engine
Cooling.
6. Check the hoses for leaks.
7A – 26
I
HEATING AND VENTILATION SYSTEM
DAEWOO V–121 BL4
HEATER CORE
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel from the vehicle. Re-
fer to Section 9E, Instrumentation/Driver Informa-
tion.
3. Remove the heater/air distributor case from the ve-
hicle. Refer to ”Heater/Air Distributor Case Assem-
bly” in this section.
4. Disconnect the vacuum actuators from the vent/
floor door and the defroster door.
5. Remove the vacuum actuators from the heater/air
distributor case.
6. Remove the screws that secure the heater core
cover to the heater/air distributor case assembly.
7. Slowly separate the lower heater core cover from
the rest of the assembly.
8. Remove the screw and the bracket clamp that se-
cure the heater core lines to the case.
9. Remove the spring clamp that secures the heater
core body to the case.
10. Remove the heater core from the case.
Installation Procedure
1. Install the heater core into the case.
2. Secure the heater core lines to the case with the
retaining bracket clamp and the screw.
Tighten
Tighten the heater core retaining bracket screw to
N
S
m (lb–in).
3. Install the heater core body with the retaining spring
clamp.
HEATING AND VENTILATION SYSTEM 7A – 27
DAEWOO V–121 BL4
4. Install the heater core cover.
5. Install and tighten the screws that secure the heater
core cover to the heater/air distributor case assem-
bly.
Tighten
Tighten the heater core cover screws to N
S
m (lb–in).
6. Install the actuators for the vent/floor and the de-
froster doors.
7. Install the heater/air distributor case. Refer to
”Heater/Air Distributor Case Assembly” in this sec-
tion.
8. Install the instrument panel. Refer to Section 9E,
Instrumentation/Driver Information.
9. Fill the cooling system.
10. Connect the negative battery cable.
REAR HEATING DUCT
Some vehicles are equipped with rear seat heating ducts.
Should there be no airflow to the rear, look for any obstruc-
tions, such as items on the floor under the front seats.
Also, check for air leaks between the heater/air distributor
assembly and the rear ducts.
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