Kia Optima: Heater Unit. Repair procedures
Replacement
| 1. |
Disconnect the negative (-) battery
terminal. |
| 2. |
Recover the refrigerant with
a recovery/ recycling/ charging station. |
| 3. |
When the engine is cool, drain
the engine coolant from the radiator. |
| 4. |
Remove the expansion valve cover
(A).
|
| 5. |
Remove the bolts (A) and the
expansion valve (B) from the evaporator core.
Tightening torque :
7.8 ~ 11.7 N.m ( 0.8 ~ 1.2 kgf.m, 5.7 ~ 8.6 Ib-ft)
|
|
Plug or cap the lines immediately after disconnecting them to avoid
moisture and dust contamination. |
|
| 6. |
Disconnect the inlet (C) and
outlet (D) heater hoses from the heater unit.
|
Engine coolant will run out when the hoses are disconnected; drain
it into a clean drip pan. Be sure not to let coolant spill on electrical
parts or painted surfaces. If any coolant spills, rinse it off immediately. |
|
| 7. |
Remove the center console.
(Refer to BD group - “Center Console”)
|
| 8. |
Remove the shift lever housing
assembly. (Refer to TR grou - “Shift Lever”)
|
| 9. |
Remove the steering handle and
column. (Refer to ST group - “Steering Column”)
|
| 10. |
Loosen the cowl cross member
mounting bolts (A).
|
| 11. |
Remove the front pillar trim
and then disconnect the connector (A).
|
| 12. |
Disconnect the air bag connector
(A).
|
| 13. |
Remove the cowl side trim and
then disconnect the connectors (A).
|
| 14. |
Disconnect the fuse box connector
(B).
|
| 15. |
Loosen the heater & blower unit
mounting bolts.
|
| 16. |
Loosen the cowl cross member
mounting bolts (A) and then remove the crash pad and heater blower unit
(B).
|
| 17. |
Disconnect the connectors and
then remove the heater blower unit (A) from crash pad.
|
| 18. |
Remove the blower unit (A) from
heater unit after loosening screws.
|
| 19. |
Loosen the mounting screw and
then remove the heater core cover (A).
|
| 20. |
Disconnect the heater core (A)
from heater unit.
|
| 21. |
Loosen the mounting screws and
then remove the heater unit lower case (A).
|
| 22. |
Remove the evaporator core (A).
|
| 23. |
Installation is the reverse order
of removal.25. Installation is the reverse order of removal, and note these
items :
| A. |
If you're installing
a new evaporator, add refrigerant oil (ND-OIL8). |
| B. |
Replace the O-rings with
new ones at each fitting, and apply a thin coat of refrigerant oil
before installing them. Be sure to use the right O-rings for R-134a
to avoid leakage. |
| C. |
Immediately after using
the oil, replace the cap on the container, and seal it to avoid
moisture absorption. |
| D. |
Do not spill the refrigerant
oil on the vehicle ; it may damage the paint ; if the refrigerant
oil contacts the paint, wash it off immediately |
| E. |
Apply sealant to the
grommets. |
| F. |
Make sure that there
is no air leakage. |
| G. |
Charge the system and
test its performance. |
| H. |
Do not interchange the
inlet and outlet heater hoses and install the hose clamps securely. |
| I. |
Refill the cooling system
with engine coolant |
|
1. Heater Case (LH)
2. Separator
3. Evaporator Core
4. Shower Duct
5. Heater Core Cover
6. Heater Core
7. Mode Actuator
8. Mode Cam
9. Temp Actua ...
See also:
Removal and Installation
1.
Disconnect the battery negative terminal first, then
the positive terminal.
Tightening torque
:(+) terminal : 7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m,
5.8 ~ 7.2l ...
Engine coolant
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the factory.
Check the antifreeze protection and
coolant level at least on ...
Canister Close Valve (CCV). Specifications
Specification
Item
Specification
Coil Resistance (Ω)
19.8 ~ 21.8 [20°C(68°F)]
...
Components