Hyundai Tucson: Oil Hydraulic Motor (Actuator) Inspection Procedure

Removal

1. Remove the coupling assembly.

(Refer to 4 Wheel Drive (4WD) System - "Direct Electro Hydraulic Actuator Coupling")

2. Keep going perpendicular state after remove the coupling assembly.

WARNING

• Keep going perpendicular state during remove (install) the hydraulic motor (acmators).
• 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.

3. Remove the hydraulic motor (A) after loosening bolts with hex wrench.

WARNING

• Remove the hydraulic motor (actuators) after dropping residual oil as much as possible inside the coupling, (abut 5-10 sec)

Installation

1. Before installation, wipe the surface with a clean cloth.

2. Check the O-rings (A) ot the new hydraulic motor (actuators).

WARNING

You have to prevent any dust from entering inside hydraulic motors (acmators) and housing.

3. Tighten the bolts after install the hydraulic motor.

WARNING

• When installing, motor connector (A) has to toward in the direction of outside of the coupling.

Tightening torque: 9.8 - 11.7 N m (1.0 - 1.2kgf m, 7.2-8.6 lb ft)

WARNING

• When installing, oil can be reflux by the pressure in air breather hole (A).
• 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. 

4. Wipe the flowed oil to around the surface with a clean cloth.

5. Install the coupling assembly.

(Refer to 4 Wheel Drive (4WD) System - "Direct Electro Hydraulic Actuator Coupling")

Description

The 4WD 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. Its torque value varies according to a pressure status.

Component location

Circuit Diagram

Inspection

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