Kia Cee'd: Heater / 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.
(Refer to Engine Mechanical - "Coolant")
4.
Remove the expansion valve (A) from the evaporator core.
Tightening torque :
7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.7 ~ 8.7 lb-ft)

  
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
When installing, replace it with a new O-ring (B).
5.
Disconnect the inlet (A) and outlet (B) 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.
6.
Remove the main crash pad assembly.
(Refer to Body - "Main Crash Pad Assembly")
7.
Remove the cowl cross bar assembly.
(Refer to Body - "Cowl Cross Bar Assembly")
8.
Remove the heater & blower unit after loosening the mounting bolt (A).

9.
Separate the blower unit from the heater unit after loosening 3 screws.

10.
Installation is the reverse order of removal.
If you're installing a new evaporator, add refrigerant oil (PAG OIL).
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 or R-1234yf to avoid leakage.
Immediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
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
Apply sealant to the grommets.
Make sure that there is no air leakage.
Charge the system and test its performance.
Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.
Refill the cooling system with engine coolant
Heater Unit Components and components location
Component Location Components   1. Heat Case (Left) 2. Heat Case (Right) 3. Separator 4. Defog Door 5. Vent Door 6. Vent Guide ...

Heater Core Repair procedures
Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater & blower assembly. (Refer to Heater - &q ...

Other information:

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