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Home >> Porsche >> 2017 >> Macan Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (42 - Rear Wheel Suspension, Drive Shafts -- PANAMERA (970)) >> WM 420855 Replacing Bearing For Rear Axle (Except PANAMERA GTS, PANAMERA Turbo S, PANAMERA Platinum Ed., PANAMERA 4 Platinum Ed.) >> Replacing Bearing For Rear Axle Housing (Chassis Subframe)

Replacing Bearing For Rear Axle Housing (Chassis Subframe)

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The chassis subframe bearings must be replaced on each side. The advantage of this is that at least two fastening points remain fitted. As a result, there is no need for >>Suspension alignment, complete<<.

  1. Unclip the relevant central connector at the rear, over the anti-roll-bar mount.
  2. Loosen vibration damper at the top -arrows-  . Carefully pull off the connector in the luggage compartment on vehicles with PASM.
    Fig 1: Loosening Vibration Damper (Top)
    G09807547Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    1. 2.1. Remove the corresponding cover from the side panel in the luggage compartment. → Detaching side panel cover, shown on left side 
      Fig 2: Detaching Side Panel Cover In Luggage Compartment
      G09807548Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    2. 2.2. Carefully pull off the PASM connector -arrow-  .
      Fig 3: Disconnecting PASM Connector
      G09807549Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  3. Position a suitable jack at a suitable position at the sides of the rear axle housing (chassis subframe) and raise it slightly.
  4. Carefully release both chassis subframe bearings and lower the rear axle housing carefully by approx. 40 mm.

    Press out rear-axle bearings at the rear 

    Information 

    Hold the hydraulic cylinder VAS 6178 tightly while pressing it out.

  5. Press out bearing. Get a second mechanic to help!

    The illustration shows the tool setup for pressing out the rear bearings.

    • Assembly fixture 9698  with the specified accessory must be used
    • - VAS 6178  Hydraulic cylinder
    • - 3  Threaded rod
    • - 4  Nut
    • - 5  Bush (bell)
    • - 2  Press-out plate
    • - 1  Thrust ring (fitted with the phase facing the chassis subframe)
      Fig 4: Example Of Pressing Out Rear-Axle Bearings At Rear
      G09807550Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Press in rear-axle bearings at the rear 

  6. Press in bearing. Get a second mechanic to help!

    Information 

    Instructions for pressing in bearings

    Clean the bearing seat with a lint-free cloth before installation.

    The bearing must be aligned and guided into vertical position for pressing it in. Reposition it quickly a number of times if necessary.

    Visually check the bearing for leaks and check that it is installed at the correct position.

    Using the foot pump, apply several short bursts of air to the bearing until it moves to its end position.

  7. Position the bearing for installation. Align the notch on the bearing +/- 5 degrees away from the direction of travel.

    The illustration shows the tool setup for pressing in the rear bearings.

    • Assembly fixture 9698  with the specified accessory must be used
    • - VAS 6178  Hydraulic cylinder
    • - 3  Threaded rod
    • - 4  Nut
    • - 6  Press-in plate
    • - 7  Press-in washer (for pressure pins)
    • - 9  Short pressure pin (screwed into the press-in washer)
      Fig 5: Example Of Pressing In Rear-Axle Bearings At Rear
      G09807551Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Press out rear-axle bearings at the front 

    Information 

    Hold the hydraulic cylinder VAS 6178 tightly while pressing it out.

  8. Press out bearing. Get a second mechanic to help!

    The illustration shows the tool setup for pressing out the front bearings.

    • Assembly fixture 9698  with the specified accessory must be used
    • - VAS 6178  Hydraulic cylinder
    • - 3  Threaded rod
    • - 4  Nut
    • - 5  Bush (bell)
    • - 2  Press-out plate
    • - 1  Thrust ring (fitted with the phase facing the chassis subframe)
      Fig 6: Example Of Pressing Out Rear-Axle Bearings At Front
      G09807552Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Press in rear-axle bearings at the front 

  9. Press in bearing. Get a second mechanic to help!

    Information 

    Instructions for pressing in bearings

    Clean the bearing seat with a lint-free cloth before installation.

    The bearing must be aligned and guided into vertical position for pressing it in. Reposition it quickly a number of times if necessary.

    Visually check the bearing for leaks and check that it is installed at the correct position.

    Using the foot pump, apply several short bursts of air to the bearing until it moves to its end position.

  10. Position the bearing for installation. Align the notch on the bearing +/- 5 degrees away from the direction of travel.

    The illustration shows the tool setup for pressing in the front bearings.

    • Assembly fixture 9698  with the specified accessory must be used
    • - VAS 6178  Hydraulic cylinder
    • - 3  Threaded rod
    • - 4  Nut
    • - 6  Press-in plate
    • - 7  Press-in washer (for pressure pins)
    • - 8  Long pressure pin (screwed into the press-in washer)
      Fig 7: Example Of Pressing In Rear-Axle Bearings At Front
      G09807553Courtesy of PORSCHE CARS NORTH AMERICA, INC.
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