Hyundai Santa Fe: Air conditioning System / Compressor. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Heating,Ventilation And Air Conditioning / Air conditioning System / Compressor. Repair procedures

Removal
1.
If a compressor is available, the air conditioner is operated for a few minutes in the engine idle state and then the engine is stopped.
2.
Disconnect the negative (-) battery terminal.
3.
Recover the refrigerant with a recovery/charging station.
4.
Loosen the drive belt.
(Refer to Engine Mechanical System - "Drive Belt")
5.
Loosen the mounting nuts and separate the suction line (A), discharge line (B).
Tightening torque :
19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)
  
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.

6.
Press the lock pin and separate the ECV connector (A).

7.
Loosen the mounting bolts and remove the compressor assembly (A).
Tightening torque :
19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)

Installation
1.
Make sure that the compressor (A) mounting bolt of the correct length is screwed in. Tighten the mounting bolts in the specified tightening order.
Tightening torque :
19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)
[Diesel 2.2 TCI-R]

[Execpt Diesel 2.2 TCI-RI]

2.
Install in the reverse order of removal.
If you install a new compressor, drain all the refrigerant oil from the removed compressor and measure its volume. Subtract the volume of drained oil from the original capacity. The result is the amount of oilcompressor oil you should drain from the new compressor (through the suction fitting).
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, R-1234yf to avoid leakage.
To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refrigerant oils.
Immediately after using the oil, replace the cap on the container and seal it to avoid moisture absorption.
Inspection
1.
Check the pulley (A) bearing play and drag by rotating the pulley by hand. Replace the pulley with a new one if it is noisy or has excessive play/drag.

External Control Valve Compressor Inspection (GDS)
Compressor type: Fixed type compressor, External control valve, Internal control valve.
In cases of fixed type and internal control valve, it is possible to inspect compressor's operation with clutch noise.
When it comes to External control valve, however, it cannot be checked in this way bacause it doesn't have a clutch.
So, ECV should be inspected with GDS as below.
1.
Connect GDS to the vehicle and select 'Aircon Compressor Test(ECV type)'
[ECV1]

2.
Make the vehicle ready as the GDS instruction on the monitor. (Turn off A/C 'switch' only)

3.
Check if other DTC codes are found before inspect ECV compressor. If so, solve that problems first. If not, press 'OK' button to continue.
  
Do not continue inspection if these DTC codes are found: B1241, B1242, B1672, B1685, B1686, B1687

4.
Start inspection

  
Check if condenser fan is operating when condition is changed to 'ECV running'
  
Relief valve will operate if condenser fandoesn't work due to overpressure in thecompressor. It helps the airconditiong system torelieve by releasing refrigerant and oil (losed ifrelieved).
※ Refill refrigerant and oil after operation of relief valve
※ Noise occurred when relief valve is in operation
5.
Check the result of inspection.
[ECV7]

[ECV8]

6.
If the result shows "Check" , click "Check" and follow the instruction.

7.
Inspect ECV again from the first step.
Disassembly
1.
Remove the front tire [RH].
2.
Loosen the drive belt.
(Refer to Engine Mechanical System - "Drive Belt")
3.
Remove the clutch bolt (A) while holding the pulley with a clutch bolt remover (09977-3R000).
Tightening torque :
15.0 - 21.0 N.m (1.53 - 2.14 kgf.m , 11.1 - 15.5 lb - ft)

4.
Loossen the limiter bolts and then remove the limiter & hub assembly.

5.
Remove the pulley (B) after removing the snap ring (A) with a snap ring plier.

  
Be careful not to damage the pulley and compressor during disassembly/reassembly.
Once the snap ring is removed, replace it with a new one.
6.
Reassemble in the reverse order of disassembly.
  
Clean the pulley and compressor sliding surfaces with non-petroleum solvent.
Install a new snap ring, and make sure they are fully seated in the groove.
Make sure that the pulley turns smoothly after reassembly.

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