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Kia EV6: Rear Motor and Reduction Gear Assembly

Components and Components Location

Kia EV6. Rear Motor and Reduction Gear Assembly

1. Water Hose Assembly
2. Rear High Voltage Junction Box
2-a. 9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)
3. Multi Inverter Assembly
3-a. 4.0 - 5.8 N·m (0.4 - 0.6 kgf·m, 2.9 - 4.3 lb·ft, 34.7 - 52.0 lb·in)
4. Multi Inverter Assembly Gasket
5. SBW(Shift By Wire) Actuator
5-a. 20.6 - 27.5 N·m (2.1 - 2.8 kgf·m, 15.2 - 20.3 lb·ft)
6. Motor Position and Temperature Sensor
6-a. 9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)
7. Motor and Reduction Gear Oil Cooler Cooling Hose
8. Motor and Reduction Gear Oil Cooler
8-a. 6.9 - 9.8 N·m (0.7 - 1.0 kgf·m, 5.1 - 7.2 lb·ft)
9. Rear Motor Rear Cover

10. Tube Pipe B
10-a. 41.2 - 47.1 N·m (4.2 - 4.8 kgf·m, 30.4 - 34.7 lb·ft)
11. Tube Pipe B Gasket
12. Rear Motor Lower Cover
13. Tube Pipe A
13-a. 41.2 - 47.1 N·m (4.2 - 4.8 kgf·m, 30.4 - 34.7 lb·ft)
14. Tube Pipe A Gasket
15. RH Motor Mounting Bracket
15-a. 63.7 - 83.4 N·m (6.5 - 8.5 kgf·m, 47 - 61.5 lb·ft)
16. Rear Motor Front Cover
17. Electronic Oil Pump (EOP)
17-a. 19.6 - 26.5 N·m (2.0 - 2.7 kgf·m, 14.5 - 19.5 lb·ft)
18. O-ring
19. Rear Motor and Reduction Gear Assembly


Installation

1.Install in the reverse order of removal.

Kia EV6. Rear Motor and Reduction Gear Assembly   

Make sure the quick connector installed securely after installing coolant hose.[Type A]- Make sure the quick connector (A) installed securely.

Kia EV6. Rear Motor and Reduction Gear Assembly

[Type B]- Make sure the quick connector and quick connector clamp installed securely.- Make sure that the quick connector protrusion (A) fit into the groove (B).

Kia EV6. Rear Motor and Reduction Gear Assembly

2.Fill the coolant.(Refer to Electric Vehicle Cooling System - "Coolant")

Kia EV6. Rear Motor and Reduction Gear Assembly   

Using the KDS, perform Electric Water Pump (EWP) air bleeding.

3.Refill the rear motor and reduction gear oil.(Refer to Rear Motor and Reduction Gear System - "Rear Motor and Reduction Gear Oil")

4.After installing the rear motor and reduction gear assembly, perform the leakage test. (Refer to Battery Control System - "Air Tightness")

5.Perform the "Motor Control Unit-Rear" and "Initialization of Automatic Resolver Offset Calibration" using the KDS.(Refer to Motor and Reduction Gear System - Motor Position & Temperature Sensor)

Kia EV6. Rear Motor and Reduction Gear Assembly   

If the resolver offset correction initialization is not performed, the output may be reduced and the drivable distance may be shortened.

Inspection

[Phase Resistance]

1.Remove the rear high voltage junction box.(Refer to Battery Control System - "Rear High Voltage Junction Box")

2.Remove the multi inverter assembly.(Refer to Battery Control System - "Multi Inverter Assembly")

3.Check the resistance of each line (U, V, W) using a multi-ohm meter.

Kia EV6. Rear Motor and Reduction Gear Assembly

Item Inspection area Specifications Remark
Phase resistance
(Line - Line)
U - V 57.48 - 63.52 mΩ Reference temperature : 20 - 20.08°C (68 - 68.1°F )
V - W
W - U

[Insulation Resistance]

1.Remove the rear high voltage junction box.(Refer to Battery Control System - "Rear High Voltage Junction Box")

2.Remove the multi inverter assembly.(Refer to Battery Control System - "Multi Inverter Assembly")

3.Using an insulation resistance tester and check insulation resistance.

(1)Connect the ( - ) terminal of the insulation resistance tester to the housing, ( + ) terminal, and 3-phase (U, V, W).

(2)Supply the DC 1,000 V voltage through insulation resistance tester and then wait about 1 minute to measure the stable resistance value.

Kia EV6. Rear Motor and Reduction Gear Assembly

Item Inspection area Specifications Remark
Insulation resistance Housing - U 100 MΩ or more DC 1,000 V, 1 minute
Housing - V
Housing - W

[Dielectric Strength]

1.Remove the rear high voltage junction box.(Refer to Battery Control System - "Rear High Voltage Junction Box")

2.Remove the multi inverter assembly.(Refer to Battery Control System - "Multi Inverter Assembly")

3.Using a withstanding voltage tester check leakage current.

(1)Connect the ( - ) terminal of the withstand voltage tester to the housing and the ( + ) terminal to the 3-phase (U, V, W).

(2)Check the measured value by applying AC 2,200 V for one minute.

Kia EV6. Rear Motor and Reduction Gear Assembly

Item Inspection area Specifications Remark
Dielectric strength Housing - U 18 mA or less AC 2,200 V, 1minute
Housing - V
Housing - W

    Previous pageRear Motor and Reduction Gear Mounting

    Components and Components Location 1. RH Motor Mounting Bracket 1-a. 63.7 - 83.4 N·m (6.5 - 8.5 kgf·m, 47 - 61.5 lb·ft) 1-b. 107.9 - 127.5 N·m (11.0 - 13.0 kgf·m, 79.6 - 94.0 lb·ft) ...

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