Hyundai Kona: Air Conditioning System / Refrigerant Line Repair procedures

Hyundai Kona (OS) 2018-2021 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Refrigerant Line Repair procedures

Replacement
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 cover.
(Refer to Engine Mechanical Assembly - "Engine Cover")
5.
After loosening the mounting nut, 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)

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)

7.
Remove the 2 nuts, and then disconnect the discharge line (B) and liquid line (A) from the condenser.
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)

8.
Disconnect the A/C pressure transducer connector (A).
9.
Remove the engine room under cover.
(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.
11.
Loosen the bracket mounting bolt (B) from suction& liquid assembly (A).
Tightening torque :
7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 Ib-ft)
12.
Remove the suction & liquid tube assembly (A) to the upper of engine room.
13.
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 : 500 ± 25g (17.6 ± 0.88oz.)
R-1234yf : 450 ± 25g (15.9 ± 0.88oz.)
Refrigerant Line Components and components location
Components Location 1. Suction & Liquid tube assembly ...

Compressor 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 compressor cha ...

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