BMW X3 2005

Strut (MacPherson Strut) Assembly

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Overhaul (Coil Spring Removal & Installation)




CAUTION
This procedure calls for the spring to be compressed. A compressed spring has high potential energy and if released suddenly can cause severe damage and personal injury.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the strut assembly from the vehicle and mount in a vise using a strut holder. This will prevent damage to the strut tube
  6.  
  7. Using a proper spring compressor, compress the spring until the stress on the thrust bearing is released.
  8.  
  9. Remove the top nut of the strut mount. Counterhold the strut rod during removal.
  10.  
  11. Pull the strut mount off the strut rod. Note the positioning of the spacers and washer for replacement.
  12.  
  13. Pull the spring off the strut and place aside in a safe area.
  14.  
  15. Slowly release the compression of the spring.
  16.  

To install:

  1. Install or connect the following:

    Spring in the compressor and compress
     
    Spring and strut mount with all the spacers and washers in their original positions. Torque the new strut rod nut: 47 ft. lbs. (65 Nm).
     

  2.  
  3. Release the spring slowly and check that it seats in the spring holders. Install the strut in the vehicle.
  4.  
  5. Connect the negative battery cable.
  6.  

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Mark the position of the threaded pin to the wheel arch to retain the camber setting when installed.
  4.  
  5. Remove or disconnect the following:
    NOTE
    Carefully mark position of threaded pin to strut tower to ensure original camber is retained during installation.



    Negative battery cable
     
    Tire and wheel assembly
     



    Two of the nuts on the spring strut support bearing
     
    Center strut bracket nut
     
    Speed sensor/brake wear cable and disconnect the plug housing
     
    Swivel bearing and tie it aside
     
    Remaining nut on the spring strut support bearing
     
    Strut assembly
     

  6.  

To install:

  1. Install or connect the following:

    Strut assembly
     
    One nut to the spring strut support bearing and hand tighten at this time
     
    Swivel bearing. Torque the new self-locking nut to 176 ft. lbs. (250 Nm).
     
    Speed sensor/brake wear cable and connect the housing plug
     
    Center strut bracket. Torque the nut to 74 ft. lbs. (100 Nm).
     

  2.  
  3. Align the three upper spring strut support bearing nuts and match the threaded pin with the mark made during the removal procedure. When aligned properly torque the nuts to 25 ft. lbs. (34 Nm).
  4.  
  5. Install the tire and wheel assembly.
  6.  
  7. Reconnect the negative battery cable.
  8.  

 
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