Hyundai Santa Fe: Coupling Assembly / Direct Electro Hydraulic Actuator Coupling. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / 4 Wheel Drive (4WD) System / Coupling Assembly / Direct Electro Hydraulic Actuator Coupling. Repair procedures

Inspection
  
All units are filled up with coupling fluid (ultra-low viscosity ATF) prior to shipping. Inspection, fill-up, and replacement of coupling fluid is therefore not necessary (zero maintenance, lifetime fluid).
Removal
  
Coupling Maintenance Precautions
Maintain the coupling at a horizontal level.
Refer to the handling caution level (A) when servicing the coupling (removal, installation, replacement, etc.).

Always maintain a horizontal posture.

  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
1.
Loosen the rear propeller shaft assembly mounting bolts and then removing the rear propeller shaft assembly (A).
Tightening torque :
49.0 - 68.6N.m (5.0 - 7.0kgf.m, 36.2 - 50.6lb-ft)

2.
Using a flat tool, separate the propellar shaft from 4WD coupling assembly.
3.
Disconnect the oil hydrulic motor connector (A).

4.
Disconnect the pressure sensor connector (A).

5.
Loosen the bolts and then removing the coupling assembly (A).
Tightening torque :
58.9 - 64.7 N.m (5.8 - 6.6kgf.m, 41.9 - 47.7 lb-ft)

Installation
1.
To install, reverse the removal procedures.
  
Smear the splines (A) with molybdenum type high pressure grease.
When install the coupling, be careful not to damage the oil seal (B).

2.
After replacing the coupling, reset the 4WD ECU's clutch learing using the diagnostic tool.
(Refer to 4WD Control System - "Repair procedures")

    Direct Electro Hydraulic Actuator Coupling. Description and operation

    Description 4WD ECU processes signals from various sensors and determines the current road and driving conditions. The ECU then utilizes this information to implement precision control over the 4WD coupling's multi-plate clutch and variably adjust the amount of torque delivered tothe rear wheels...

    Oil hydraulic Motor(Actuator). Description and operation

    Description The 4WD 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...

    Other information:

    Hyundai Santa Fe (TM) 2019-2024 Owner's Manual: System operation


    Operating conditions Smart Cruise Control will operate when the following conditions are satisfied. Basic function The gear is in D (Drive) The driver’s door is closed EPB (Electronic Parking Brake) is not applied Your vehicle speed is within the operating speed range -- 5~110 mph (10~180 km/h): when there is no vehicle in front -- 0~110 mph (0~180 km/h): when there is a vehicle in front ESC (Electronic Stability Control), TCS (Traction Control System) or ABS is on ESC (Electronic Stability Control), TCS (Traction Control System) or ABS is not controlling the vehicle Engine rpm is not in the red zone Forward Collision-Avoidance Assist brake control is not operating Remote Smart Parking Assist brake control is not operating Information At a stop, if there is no vehicle in front of your vehicle, the system will turn on when the brake pedal is depressed...

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Specifications


    Specification Item Specification Rated Voltage (V) 13.5V Secondary Coil [Engine 1000RPM standard] Input voltage (V) 13.5V Dwell Time (ms) 4...

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    Interior Overview

    1. Inside door handle
    2. Power window switches
    3. Power window lock button/Electronic child safety lock button
    4. Side view mirror folding button
    5. Side view mirror control switch
    6. Central door lock switch
    7. Instrument panel illumination control switch

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