Assembling Spring Strut

→ Do not reach into the danger area.

→ Relieve the tension on components before starting work.

→ Secure components to prevent them from loosening suddenly.

Information 

• When installing new components, always check that they are assigned correctly. 
• Coil springs are only available in pairs. 

1. Clamp the spring strut in a suitable clamping block (tensioning device for MacPherson spring struts). Alternatively, the spring clamp can also be held in a retaining device.
2. Slide the bellows/additional spring assembly onto the piston rod.
3. Mount cone washer -8-  and stop plate -7-  in correct position.
   Fig 1: Identifying Cone Washer

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Push the pretensioned coil spring onto the vibration damper so that the end of the coil spring rests against the stop of the spring plate.
5. Completely assemble the spring plate (compensating plate) -6-  , support ring -5-  and bearing with its housing -4-  with the spring strut supporting mount -3-  . Then slide the assembly onto the piston rod.
   Fig 2: Supporting Spring Strut Assembly

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Place spring strut supporting mount assembly onto the piston rod so that the end of the coil spring is located inside the spring plate.
7. Fit stop plate in the correct position (domed side upwards) and screw a new lock nut onto the piston rod. Important: For PASM spring struts, place the lug of the stop plate (in area of spring strut mount) in the groove of the piston rod (twist lock of piston rod opposite the supporting mount). Make sure that the plastic part of the bearing sits correctly in the recess of the supporting mount -arrows-  .
   Fig 3: Supporting Mounting Correct Seat

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
8. On PASM spring struts, before tightening the lock nut, align the stop plate -2-  offset 45° from direction of travel marking -arrows A-  of the supporting mount.

   The value: 45° + - 2° is necessary so that the two grooves of the stop plate (cut-outs for countering) are positioned over or between the recesses (pockets in the rubber part) which lie below.

   Fig 4: Identifying Stop Plate Position (PASM)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
9. Tighten lock nut to the specified tightening torque. For PASM spring struts, counter at the stop plate using retaining tool 9630/1  . For conventional spring struts, counter at the hexagon socket of the piston rod using special tool 9630  .
   Fig 5: Identifying Spring Strut Mounting Nut

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
10. If present, push on clip (vibration balancer) at damper tube of vibration damper. Final assembly (tightening) only on completion of wheel carrier.