Hyundai Palisade Quiz
All-Wheel Drive (AWD) System

Oil Hydraulic Motor (Actuator)

In this manual: All-Wheel Drive (AWD) System
General Information — 10Engine Mechanical System — 56Engine Electrical System — 28Emission Control System — 21Engine Control System/Fuel System — 42Automatic Transmission System (A8LF1) — 33All-Wheel Drive (AWD) System — 16Drive Shaft and Axle — 19Suspension System — 28Steering — 17Restraints — 20Brake System — 39Body (Interior and Exterior) — 142Body Electrical System — 171Heating, Ventilation, and Air Conditioning — 47Advanced Driver Assistance System (ADAS) — 44
8steps
~48min
2/5difficulty
0102030405010.88N·mlb·ft
Tightening torque found on this page
Done 0 of 8

Description and Operation

Description

The AWD ECM controls the pump motor (actuator) to generate oil pressure. The pressure engages the multi-plate clutch to transmit torque to the rear wheels. The torque delivered to the rear wheels depends on the clutch pressure.
Hyundai Palisade. Description and operation

Circuit Diagrams

Wiring Diagram

Hyundai Palisade. Schematic diagrams

Repair Procedures

Inspection

Hyundai Palisade. Repair procedures
  • If there is a diagnostic trouble code related to the oil hydraulic motor (actuator), inspect the oil hydraulic motor (actuator) in accordance with the inspection procedure.

Oil Hydraulic Motor (Actuator) Inspection Procedure

Hyundai Palisade. Repair procedures

Removal

  1. Remove the coupling assembly. (Refer to All-Wheel Drive (AWD) System - Coupling Assembly)
  2. Keep the coupling perpendicular after removing the coupling assembly.
    Hyundai Palisade. Repair procedures
    • Keep the hydraulic motor (actuator) perpendicular during removal (installation).
      Hyundai Palisade. Repair procedures
    • Use the tool (A) that allows an assistant to hold or set the coupling in a vertical position.
    • To prevent damage to the input shaft side (B).
      Hyundai Palisade. Repair procedures
  3. Remove the hydraulic motor (A) after first loosening the bolts with a hex key.
    Hyundai Palisade. Repair procedures
    Hyundai Palisade. Repair procedures
    • Remove the hydraulic motor (actuator) after draining as much residual oil as possible from inside the coupling (A). (Approximately 5-10 seconds)
      Hyundai Palisade. Repair procedures

Installation

  1. Before installation, wipe the surface clean with a clean cloth.
    Hyundai Palisade. Repair procedures
  2. Inspect the O-rings (A) of the new hydraulic motor (actuator).
    Hyundai Palisade. Repair procedures
    Hyundai Palisade. Repair procedures
    • Prevent dust from entering the hydraulic motor (actuator) and the housing.
  3. Tighten the bolts after installing the hydraulic motor.
    Hyundai Palisade. Repair procedures
    • When installing, the motor connector (A) must face outward from the coupling.

    Tightening torque: 8.8 - 10.8 N·m

    Hyundai Palisade. Repair procedures
    Hyundai Palisade. Repair procedures
    • During installation, oil may flow back under pressure through the 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. ※ Oil flowing back will drain to the bottom.
    • Prevent additional backflow by ordering as shown in the illustration.
    Hyundai Palisade. Repair procedures
  4. Wipe off leaked oil from the surface (A) with a clean cloth.
    Hyundai Palisade. Repair procedures
  5. Install the coupling assembly. (Refer to All-Wheel Drive (AWD) System - Coupling Assembly)

Test yourself

A quick Hyundai Palisade quiz: every answer comes with an explanation and a link to the manual page.