Hyundai Ioniq (AE): Hybrid Motor Cooling System / Reservoir. Repair procedures

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Hybrid Motor System / Hybrid Motor Cooling System / Reservoir. Repair procedures

Inspection
Inverter Reservoir Cap Test
1.
Remove the reservoir cap and mount it on the pressure tester.

2.
Apply pressure of 93.16 - 122.58 kPa (0.95 - 1.25 kgf/cm², 13.51 - 17.78 psi).
3.
Check if the pressure decreases.
4.
If the pressure decreases, replace the cap.
Radiator Leakage Test
1.
Wait until the engine cools down. Remove the inverter reservoir cap carefully. Fill the coolant in the reservoir and mount the reservoir on the pressure tester.
2.
Mount the reservoir on the pressure tester and apply pressure of 93.16 - 122.58 kPa (0.95 - 1.25 kgf/cm², 13.51 - 17.78 psi).

3.
Check if the coolant leaks or the pressure decreases.
4.
Remove the tester and mount the inverter reservoir cap.
Removal
1.
Remove the undercover.
(Refer to Engine Mechanical System - "Engine Room Undercover".)
2.
Drain the coolant from the hybrid cooling system.
(Refer to Hybrid Motor Cooling System - "Coolant".)
3.
Remove the air duct.
(Refer to Engine Mechanical System - "Air Cleaner".)
4.
Disconnect the reservoir input hose (A) from the output hose pipe assembly (B).
5.
Unscrew the bolt to remove the reservoir (C).
Tightening torque :
3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3lb-ft)

Installation
1.
To install, reverse the removal procedure.
   
•
•Be careful not to cause any damage on the hose when tightening the clamp.
•
Mount the clamp tightening part in the designated direction so that interference does not occur with the adjacent parts.
•
Fill the coolant in the hybrid cooling system and use the GDS to perform air bleeding.
(Refer to Hybrid Motor Cooling System - "Coolant".)
•
After mounting the reservoir, check for the leakage in the hose connections while the engine is running.

    Component location1. Reservoir2. Hybrid drive motor3. Hybrid starter generator (HSG)4. Electrical radiator5. Electric water pump (EWP)

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