Hyundai Ioniq (AE): Clutch System / Engine Clutch Actuator. Repair procedures

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Engine Clutch System / Clutch System / Engine Clutch Actuator. Repair procedures

Removal
1.
Turn the ignition switch OFF and disconnect the battery (-) terminal.
2.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
3.
Disconnect the engine clutch actuator connector (A).
   
•
Make sure that the hydraulic fluid or foreign substance does not enter the connector assembly of the actuator.
(Seal the assembly after disengaging the connector.)
•
Be sure to lift the yellow safety pin before disengaging the connector.
4.
Disconnect the reservoir hose (B).
   
•
Disconnect the reservoir hose, and then Be careful not to leak the fluid.
•
Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water

5.
Remove the engine clutch actuator (A) from the hybrid motor assembly after loosening the bolts.
Tightening torque :
21.6 - 26.5 N.m (2.2 - 2.7 kgf.m, 15.9 - 19.5 lb-ft)

Installation
1.
Install in the reverse order of removal.
   
•
Before installing the engine clutch actuator, check the assembled state of the O-rings (A).

•
After tightening bolts temporarily, tighten the bolt completely at the same time with regulation torque.
2.
After replacing the Engine clutch actuator, operate the followings in order using GDS equipment.
(1)
Engine clutch inspection line learning and diagnostic information.

(2)
Removal of air from engine clutch hydraulic pressure line.
   
•
When using a vacuum-pressure equipment to inject hydraulic fluid, the vacuum pressure should be no more than 2.5 torr and the injection pressure should be between 2.3 - 2.5 bars.
•
If it is impossible to inject hydraulic fluid using the above condition, be sure to remove air from the hydraulic line of the engine clutch at a temperature between 0 - 40°C.

(3)
Engine clutch/motor resolver adaptation.

(4)
Stabilization of the engine clutch hardware transfer torque.

    Circuit Diagram

    Components 1. Clutch disc2. Clutch cover3. Concentric slave cylinder4. Hybrid motor assembly5. Engine clutch actuator6. Reservoir

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