Hyundai Elantra (CN7): Air Conditioning System / Refrigerant Line

Hyundai Elantra (CN7) 2021-2026 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Refrigerant Line

Components and components location

Components Location

1. Refrigerant Pipe Assembly


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 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)

5.
Loosen the mounting 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)

6.
Disconnect the A/C pressure transducer connector (A).

7.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
8.
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.

9.
Remove the refrigerant line assembly (A) to the upper of engine room.
Tightening torque :
7.8 - 11.8 N.m ( 0.8 - 1.2 kgf.m, 5.8 - 8.7 Ib-ft)

10.
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.
Capacity : 500 ± 25 g (17.6 ± 0.88 oz.)

    Repair procedures Oil Specification1.The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil.

    Description and operation DescriptionThe 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.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Rheostat

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    Hyundai Elantra (CN7) 2021-2026 Service Manual: Troubleshooting

    Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed se

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