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Home >> Porsche >> 2018 >> Cayenne Turbo >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> 39 - Final Drive Differential, Differential Lock (4.8L Turbo) -- 92A - Cayenne (92A) >> WM, 398819 Removing And Installing All-Wheel Final Drive >> Removing All-Wheel Final Drive

Removing All-Wheel Final Drive

  1. Clamp steering wheel in centre position with steering wheel holder -fig ure-  .
    G16315143Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Steering wheel holder

  2. Unscew plastic nuts -arrows-  on front right wheel housing liner.
    G16315144Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel housing liner mount

  3. Engage special tool > VW552 - Spring tensioner in top of wheel housing, behind wheel housing liner, and support the spring strut.
    G16315145Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Installation position of spring compressor

  4. Remove cover plate on the steering -arrows-  .
    G16315146Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Cover plate on steering

  5. Pull Servotronic plug off the steering gear.
  6. Unscrew bolted connection -arrow-  securing universal joint to steering gear. Remove universal joint from steering gear.
    G16315147Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Universal joint bolted connection

  7. Remove left and right drive shafts from the all-wheel final drive using > Nr.31 - multiple-tooth socket-wrench insert M12.
  8. Remove cover plate on front final drive by loosening three fastening screws and removing the plate.

    Information 

    G16315148Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    VAG bolts

    • Fastening screw -left arrow- at front right cannot be removed until the front-axle carrier is lowered. 
  9. Unscrew fastening screws for all-wheel final drive and screw for drive flange.
    G16315149Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    VAG bolts

    Information 

    • Supports 1, 4 and 7 must be fitted to the unit lifting platform. 
  10. Raise unit lifting platform until it is touching the front-axle carrier.
  11. Unscrew bolts -arrows-  on front-axle carrier.
    G16315150Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Bolts on front-axle carrier

  12. Undo bolt connecting spring strut to trailing arm -arrow-  .
    G16315151Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Bolt connecting spring strut to trailing arm

  13. Disengage servo line from the front-axle carrier at the three holders -arrows-  .
    G16315152Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Servo line holders

    NOTE: NOTIFICATION 
    Chassis subframe lowered too far 
    • Over-extension of joints on the chassis 

      → Only lower the chassis subframe sufficiently to allow the transmission to be removed.

  14. Lower the front-axle carrier with the unit lifting platform. Remove the vent line from the final drive at the same time.
    CAUTION: Risk of damage to ATF lines and pressure line for power steering. 
    • Protect ATF lines with water hose or similar.

      → > The servo line must not be crushed or stretched.

  15. Press left drive shaft out of the flange on the final drive.
    G16315153Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Pressing out drive shaft

  16. Lift transmission and press to the left.
  17. Tilt forward the transmission housing together with drive flange.
    G16315154Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Movement sequence for all-wheel final drive

  18. Remove all-wheel final drive downwards through the front-axle carrier.
    G16315155Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Removing all-wheel final drive

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