Installing Rear Spring Strut (Steel Springs With PASM)

→ Secure the climbing aid to prevent it from slipping and tipping over.

Information 

• All screws and threaded joints on the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on its wheels or the wheel suspension is raised with a universal vehicle lift. Measurement -1- from the lower edge of the wing to the middle of the vehicle axle corresponds to vehicle position. The current height values can be found in →  4495TW ADJUSTMENT VALUES FOR SUSPENSION ALIGNMENT  . Always observe the following points!
  Fig 1: Checking Dimension 1 - Centre Of Wheel To Lower Edge Of Wing (Rear Axle)

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• On vehicles with air springs, the respective air spring must be bled using the Porsche System Tester  . → 4301IN BLEEDING AND FILLING THE LEVELLING SYSTEM
• Screws and nuts are Geomet-coated and must not be greased  .

A second mechanic is needed for installing the spring strut  .

1. Only raise the vehicle as far as required on the lifting platform so that a suitable jack can fit under the wheel bearing housing and a second mechanic can easily reach the luggage compartment floor with a small ladder → Installing spring strut 
2. Carefully fit the spring strut -1-  at the upper spring-strut mount.
3. When doing so, make sure that the pins -3-  of the rocker bearing -2-  fit exactly into the corresponding bore -4-  on the body.
   Fig 2: Identifying Upper Spring-Strut Mount

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4. Position the jack -2-  as a support under the spring strut -1-  and raise it as far as required -A-  until the installation position of the spring strut no longer changes.

   The rocker bearing must be flush with the body  .

   Fig 3: Installing Spring Strut

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5. The second mechanic -3-  must now climb onto a suitable pedestal -4-  , or small ladder and fit and tighten the top screws -1-  on the spring strut. Final tightening of the top fastening screws to the specified tightening torque is done in Step  11.

   When fitting the screws, make sure that they do not tilt and can be fitted easily.

   Fig 4: Identifying Upper Spring-Strut Mount

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6. Raise the vehicle. → 4X00IN LIFTING THE VEHICLE
7. Insert the spring strut into the wheel bearing housing with the help of the jack.
   Fig 5: Lifting Wheel Bearing Housing

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8. Fit lower spring strut -1-  with the wheel bearing housing -2-  and connecting link -4-  . Tightening torque 90 Nm (67 ftlb.) +90 angular degrees 

   To do this, insert the fastening screw -3-  through the components from behind and fit it.

   Fig 6: Identifying Screw Of Spring Strut And Wheel Bearing Housing

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9. Plug in electric plug connection -1-  for the spring strut at the upper spring-strut mount -A-  and lock it -a-  .
   Fig 7: Locating Plug Connection For Steel Springs

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10. Lower the vehicle.
11. Then fit fastening screws -1-  for the upper spring strut and tighten to the specified tightening torque. Tightening torque 50 Nm (37 ftlb.) +180° 

    The tightening sequence -A, B, C, D-  must be strictly observed!

    Fig 8: Installation Sequence For Upper Spring Strut Screws

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12. Secure the caps -1-  on the top fastening screws for the spring strut at the front.
    Fig 9: Identifying Caps

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