Kia Optima: Air Conditioning System / Refrigerant Line
Components and components location
![](images/refrigerant_line-804/357/sdlha0501l.gif)
1. Suction & Liquid tube assembly
|
2. Discharge hose
|
Repair procedures
1. |
If the compressor is marginally operable, run the engine at idle speed,
and let the air conditioning work for a few minutes, then shut the engine
off.
|
2. |
Disconnect the negative (-) battery terminal.
|
3. |
Recover the refrigerant with a recovery / charging station.
|
4. |
Remove the engine mounting support bracket.
G 2.0 NU MPI (Refer to Engine Mechanical System - "Engine Mounting")
G 2.5 GDI THETA II (Refer to Engine Mechanical System - "Engine Mounting")
|
5. |
Loosen the mounting nut and remove the expansion valve cover (A).
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)
|
![](images/refrigerant_line-804/357/sdlha0512d.gif)
|
6. |
Remove the bolts and the expansion valve (A) from the evaporator core.
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)
|
Plug or cap the lines immediately after disconnecting them to
avoid moisture and dust contamination.
|
![](images/refrigerant_line-804/357/sdlha0513d.gif)
|
7. |
Press the lock pin and separate the A/C pressure transducer connector
(A).
![](images/refrigerant_line-804/357/sdlha0514d.gif)
|
8. |
Loosen the mounting nuts, remove the suction line (A) and discharge line
(B).
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)
|
![](images/refrigerant_line-804/357/sdlha0515d.gif)
|
9. |
Remove the engine room under cover.
G 2.0 NU MPI (Refer to Engine Mechanical System - "Engine Cover")
G 2.5 GDI THETA II (Refer to Engine Mechanical System - "Engine Cover")
|
10. |
Remove the bolts, then disconnect the suction line (A) and discharge
line (B) from the compressor.
Tightening torque :
21.6 - 32.4 N.m (2.2 - 3.3 kgf.m, 15.9 - 23.9 Ib-ft)
|
Plug or cap the lines immediately after disconnecting them to
avoid moisture and dust contamination.
|
![](images/refrigerant_line-804/357/sdlha0516d.gif)
|
11. |
Remove the suction & liquid tube assembly (A) to the upper of engine
room.
![](images/refrigerant_line-804/357/sdlha0517d.gif)
|
12. |
To install, reverse the removal procedure.
•
|
Plug or cap the lines immediately after disconnecting
them to avoid moisture and dust contamination.
|
•
|
Tighten the bolt or nut joint to the specified torque.
|
•
|
Using a gas leak detector, check for refrigerant leakage.
|
•
|
Evacuate air in the refrigeration system and charge system
with refrigerant.
|
|
Specified amount
• R-134a : 600 ± 25 g (21.2 ± 0.88 oz.)
• R-1234yf : 520 ± 25 g (18.3 ± 0.88 oz.)
|
|
Repair procedures
Oil Specification
1.
The HFC-134a system requires synthetic (PAG) compressor oil whereas the
R-12 system requires mineral compressor oil. The two oil ...
Description and operation
Description
The compressor is the power unit of the A/C system.
It is located on the side of engine block and driven by a V-belt of the engine.
The compres ...
Other information:
Repair procedures
Inspection
•
Wrap tin foil around the end of the voltmeter test lead to prevent
damaging the heater line. Apply pressure on the tin foil with hand
and move the t ...
Specifications
Specification
Item
Specification
Control type
ON/OFF
Voltage (V)
9 - 16
Control pressure kpa (kgf/cm², psi)
0 - 490.33 (0 - 5.0, 0 - 71.12)
...