Hyundai Palisade (LX2): Coupling Assembly / Oil hydraulic Motor(Actuator)

Hyundai Palisade (LX2) 2020-2026 Service Manual / 4 Wheel Drive (AWD) System / Coupling Assembly / Oil hydraulic Motor(Actuator)

Description and operation

Description
The AWD ECM controls the Pump Motor Pump (Actuator) to generating an oil pressure. The pressure engages a multiple disk clutch to transfer torque to the rear wheels. The torque to the rear wheels varies according to the pressure on the clutch.

Hyundai Palisade. Description and operation

Schematic diagrams

Circuit Diagram

Hyundai Palisade. Schematic diagrams

Repair procedures

Inspection
Hyundai Palisade. Repair procedures   
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If you have trouble code related to the oil hydraulic motor (actuator), check oil hydraulic motor (actuator) according to the inspection process.
Oil Hydraulic Motor (Actuator) Inspection Procedure

Hyundai Palisade. Repair procedures

Removal
1.
Remove the coupling assembly.
(Refer to 4 Wheel Drive (AWD) System - "Coupling Assembly")
2.
Keep going perpendicular state after remove the coupling assembly.
Hyundai Palisade. Repair procedures   
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Keep going perpendicular state during remove (install) the hydraulic motor (actuators).

Hyundai Palisade. Repair procedures
•
Use a tool (A) that allows the auxiliary operator to hold or seat the coupling in a vertical position.
•
So that the input shaft side (B) is not damaged.

Hyundai Palisade. Repair procedures
3.
Remove the hydraulic motor (A) after loosening bolts with hex wrench.

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
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Remove the hydraulic motor (actuators) after dropping residual oil as much as possible inside (A) the coupling. (abut 5-10 sec)

Hyundai Palisade. Repair procedures
Installation
1.
Before installation, wipe the surface with a clean cloth.

Hyundai Palisade. Repair procedures
2.
Check the O-rings (A) of the new hydraulic motor (actuators).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
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You have to prevent any dust from entering inside hydraulic motors (actuators) and housing.
3.
Tighten the bolts after install the hydraulic motor.
Hyundai Palisade. Repair procedures   
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When installing, motor connector (A) has to toward in the direction of outside of the coupling.
Tightening torque:
8.8 - 10.8 N.m (0.9 - 1.1 kgf.m, 6.5 - 8.0 lb-ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
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When installing, oil can be reflux by the pressure in air breather hole (A).

Hyundai Palisade. Repair procedures

•
Change direction in the direction of the arrow and lay on the floor as shown in the illustration.
※ The reflux oil will flow to the bottom.
•
You have to prevent additional backflow in according to order as shown in the illustration.

Hyundai Palisade. Repair procedures
4.
Wipe the flowed oil to around the surface (A) with a clean cloth.

Hyundai Palisade. Repair procedures
5.
Install the coupling assembly.
(Refer to 4 Wheel Drive (AWD) System - "Coupling Assembly")

    Components and components location Component Location 1. Trasaxle assembly 2. Transfer assembly 3. Propeller shaft assembly 4.

    Description and operation Description The AWD ECU makes a Motor Pump(Actuator) turn round for generating an oil pressure. And then it presses a multiple disk clutch and transfers the generated torque into rear wheels.

    Other information:

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Components and components location

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