Avenger, Sebring Coupe, Stratus Coupe, 1999-2006

Strut (MacPherson Strut)

Print

Disassembly & Assembly




NOTE
Before servicing the vehicle, also refer to the precautions in the beginning of this section.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the strut from the vehicle.
  4.  
  5. For the overhaul of the strut assembly, use strut spring compressor Pentastar® Service Equipment (PSE) tool W-7200, or equivalent, to compress the coil spring. Follow the manufacturer's instructions closely.
    NOTE
    If both shock assemblies are to be removed, mark the shock assemblies according to the side from which they are to be removed (left or right).

  6.  
  7. Position the shock assembly in the strut coil spring compressor.
  8.  
  9. Set the lower hooks and install the clamp on the lower end of the coil spring, so the shock is held in place once the shock shaft nut is removed.
  10.  
  11. Rotate the shock assembly so the upper control arm ball joint sits directly below the front upper hook.
  12.  
  13. Position the upper hooks on top of the upper mounting bracket.
    CAUTION
    Do not remove the shock rod nut before the coil spring is compressed. The coil spring is held under pressure and must be compressed, removing spring tension from the upper mounting bracket, before the rod nut is removed.

  14.  
  15. Compress the coil spring until all coil spring tension is removed from the upper mounting bracket.
  16.  
  17. Hold the shock rod from rotating using special socket Snap-On® A136, or an equivalent, and remove the retainer nut.
  18.  
  19. Remove the upper bushing retainer washer from the shock absorber rod.
    NOTE
    While removing the shock absorber from the coil spring, the dust shield and cup, and perhaps the jounce bumper will get caught inside the coil spring requiring it to be left until the coil spring is removed from the compressor. It may be left there until the shock absorber is installed, if removal is not necessary. Use care not to misplace the lower bushing retainer washer.

  20.  
  21. Remove the clamp from the bottom of the coil spring and remove the shock absorber, lower spring isolator, jounce bumper, cup, dust boot, and lower bushing retainer washer out through the bottom of the coil spring.
    NOTE
    Before removing the coil spring from the spring compressor, note the position of the lower coil spring end to the spring compressor. The coil spring will need to be in this position on reassembly for proper coil spring-to-shock absorber and upper mounting bracket orientation.

  22.  
  23. Release the tension from the coil spring by backing off the compressor drive fully. Push back the compressor upper hooks and remove the upper mounting bracket and upper control arm from the coil spring.
  24.  
  25. Note the position of the coil spring in the spring compressor as listed in the above note before removal. This is necessary for proper alignment of the shock assembly components when reassembly is made. Remove the coil spring from the spring compressor.
  26.  
  27. Remove the shock absorber rod upper isolator bushing from the upper mounting bracket.
  28.  
  29. Remove the shock absorber rod lower isolator bushing and sleeve from the upper mounting bracket.
  30.  
  31. Remove the upper coil spring isolator from mounting bracket.
  32.  
  33. Remove the lower shock rod bushing retainer washer from the shock absorber rod.
  34.  
  35. If not already removed, remove the jounce bumper and the metal collar from the shock absorber rod.

    Click image to see an enlarged view

    Fig. Shock assembly components

  36.  
  37. Remove the lower spring isolator from the lower spring seat on the shock absorber.
  38.  
  39. Inspect the shock assembly components for the following and replace as necessary:

    The shock for any condition of rod binding over the full stroke of the shaft
     
    The upper mounting bracket for cracks, distortion, and any sign of damage
     
    The upper mounting bracket-upper control bushings for deterioration
     
    The upper and lower shock rod isolator bushings for severe deterioration
     
    The upper and lower spring isolators for severe deterioration
     
    The dust shield for rips and deterioration
     
    The jounce bumper for cracks and signs of deterioration
     
    The coil spring for any sign of damage to the coating
     

  40.  

To install:

  1. Install the sleeve into the lower shock absorber rod isolator bushing.
  2.  
  3. Install the shock absorber rod lower isolator bushing and sleeve in the bottom of the upper mounting bracket as shown.
  4.  
  5. From the top, install the shock absorber rod upper isolator bushing into the center of the upper mounting bracket over the sleeve protruding from the lower isolator bushing. The smaller end of each bushing is to face away from the upper mounting bracket once installed.
  6.  
  7. Place the lower end (smaller diameter) of the coil spring in the spring compressor supported by the lower hooks, following the manufacturer's instructions.
    NOTE
    Proper orientation of the spring in the compressor is necessary for proper alignment of all shock assembly components.

  8.  
  9. Position the coil spring lower end tip at the position it was at before the coil spring removal from the compressor.
  10.  
  11. Place the dust shield and cup inside the coil spring.
  12.  
  13. Secure the lower shock rod bushing retainer washer over the cup.
  14.  
  15. Install the upper coil spring isolator on top of the spring matching the built-in step in the isolator to the tip of the coil spring.
  16.  
  17. Position the upper control arm ball joint so it lies directly below the front upper hook, then install the upper mounting bracket on top of the coil spring isolator placed on the coil spring.
  18.  
  19. Position the upper hooks on top of the upper mounting bracket.
  20.  
  21. Compress the coil spring.
  22.  
  23. Install the lower spring isolator on the lower spring seat of the shock absorber. When installing the spring isolator, be sure the isolator sets in the notch made for the lower coil spring end.
  24.  
  25. Install the jounce bumper on the shock rod. Install the jounce bumper with the pointed end pointing downward.
  26.  
  27. Install the collar, undercut side facing down, on the rod of the shock absorber. Be sure the collar is positioned squarely on the step of the shock absorber rod.
  28.  
  29. Install the shock through the bottom of the coil spring, then through the dust boot, cup, and retainer washer until the lower spring seat contacts the lower end of the coil spring. The lower coil spring end should set into the notch of the shock absorber lower seat and isolator.
  30.  
  31. Install the clamp temporarily securing the shock absorber to the coil spring.
  32.  
  33. Install the upper shock rod bushing retainer washer. Make sure the concave side is facing up.
  34.  
  35. Install the shock assembly retainer nut. Hold the shock rod from rotating using special socket Snap-On® A136, or an equivalent, and tighten the retainer nut using a crow foot wrench to 33 ft. lbs. (45 Nm).
  36.  
  37. Slowly release the tension from the coil spring by backing off the compressor drive fully. As the tension is relieved, make sure the upper mounting bracket, isolator, and coil spring align properly.
  38.  
  39. Remove the clamp from the lower end of the coil spring and shock.
  40.  
  41. Push back the spring compressor upper and lower hooks.
  42.  
  43. Remove the shock assembly from the spring compressor.
  44.  
  45. Install shock assembly on the vehicle.
  46.  

Removal & Installation



  1. Loosen wheel nuts.
  2.  
  3. Raise vehicle.
  4.  
  5. Remove the wheel and tire assembly.
  6.  
  7. If both shock assemblies are removed, mark the shock assemblies right and left according to which side of the vehicle they were removed from
  8.  
  9. Remove the wheel speed sensor cable routing bracket from the steering knuckle.
  10.  
  11. Remove the nut from the upper ball joint stud.
  12.  
  13. Remove the upper ball joint stud from the steering knuckle using a puller. Pull steering knuckle outward and position toward the rear of the front wheel opening.
  14.  
  15. Remove the pinch bolt attaching shock absorber clevis to shock absorber.
  16.  
  17. Remove the nut and through-bolt attaching the shock absorber clevis to the lower control arm.
  18.  
  19. Remove the clevis from the shock absorber by carefully tapping the clevis off the shock absorber using a soft (brass) drift.
  20.  
  21. Remove the 4 bolts attaching the shock absorber/upper control arm mounting bracket to the shock tower of the vehicle.
  22.  
  23. Remove the shock assembly from the vehicle. The shock assembly is removed out through the front area of the front wheel well.

    Click image to see an enlarged view

    Fig. Front suspension components



    Click image to see an enlarged view

    Fig. Front strut components



    Click image to see an enlarged view

    Fig. Strut upper attaching bolts



    Click image to see an enlarged view

    Fig. Be sure the orientation tab is situated into the clevis split

  24.  

To install

  1. Install the shock assembly, with the clevis removed, into shock tower. Aligning the 2 locating pins and the 4 mounting holes on the upper control arm shock absorber mount with the 4 holes in shock tower. Install the 4 upper control arm mount to shock tower mounting bolts. Tighten the 4 bolts to 70 ft. lbs. (95 Nm).
  2.  
  3. Install the clevis on the shock absorber. Clevis is installed by tapping it onto the fluid reservoir of the shock absorber using a soft (brass) drift until fully seated against locating tab on shock absorber. Orientation tab on locating tab must be positioned in the split of the clevis.
  4.  
  5. Install the pinch bolt retaining the shock clevis to the shock absorber. Tighten the pinch bolt to: 65 ft. lbs. (88 Nm)
  6.  
  7. Install the clevis bracket to lower control arm through-bolt. Do not tighten the through-bolt at this time.
  8.  
  9. Install the upper ball joint into steering knuckle. Install the nut on ball joint stud. Tighten nut to 20 ft. lbs. (27 Nm).
  10.  
  11. Install the routing bracket for the wheel speed sensor cable on the steering knuckle. Install and securely tighten the routing bracket attaching bolt.
    WARNING
    When supporting lower control arm with jackstand, do not position jack stand under the ball joint cap on the lower control arm. Position in area of lower control arm shown.



    Click image to see an enlarged view

    Fig. Proper jackstand placement under the lower control arm

  12.  
  13. Lower vehicle to the ground with a jackstand positioned under the lower control arm. Continue to lower vehicle so the total weight of the vehicle is supported by the jack stand and lower control arm.
  14.  
  15. Tighten the shock absorber clevis to lower control arm bushing through-bolt nut to: 65 ft. lbs. (88 Nm).
  16.  
  17. Raise the vehicle, then remove the jack stand.
  18.  
  19. Install the tire and wheel assembly. Progressively tighten the wheel mounting nuts in a crisscross sequence until all nuts are torqued to half specification. Then repeat the tightening sequence to the full specified torque of 100 ft. lbs. (135 Nm).
  20.  
  21. Lower the vehicle.
  22.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Loosen the wheel nuts.
  4.  
  5. Raise and safely support the vehicle.
  6.  
  7. Remove the wheel and tire assembly.
    NOTE
    If both shock assemblies are to be removed, mark the shock assemblies according to the side from which they are to be removed (left or right).

  8.  
  9. Remove the wheel speed sensor cable routing bracket from the steering knuckle.
  10.  
  11. Remove the nut from the upper ball joint stud.
  12.  
  13. Remove the upper ball joint stud from the steering knuckle using a puller. Pull the steering knuckle outward and position it toward the rear of the front wheel opening.
  14.  
  15. Remove the pinch bolt attaching the shock absorber clevis to the shock absorber.
  16.  
  17. Remove the nut and through-bolt attaching the shock absorber clevis to the lower control arm.
  18.  
  19. Remove the clevis from the shock absorber by carefully tapping the clevis off the shock absorber using a soft (brass) drift.
  20.  
  21. Remove the 4 bolts attaching the shock absorber/upper control arm mounting bracket to the shock tower of the vehicle.
    NOTE
    The shock assembly is removed out through the front area of the front wheel well.

  22.  
  23. Remove the shock assembly from the vehicle.

    Click image to see an enlarged view

    Fig. Front suspension components



    Click image to see an enlarged view

    Fig. Front strut components



    Click image to see an enlarged view

    Fig. Strut upper attaching bolts



    Click image to see an enlarged view

    Fig. Be sure the orientation tab is situated into the clevis split

  24.  

To install

  1. Install the shock assembly, with the clevis removed, into the shock tower. Align the 2 locating pins and the 4 mounting holes on the upper control arm shock absorber mount with the 4 holes in shock tower.
  2.  
  3. Install the 4 upper control arm mount to shock tower mounting bolts. Tighten the 4 bolts to 70 ft. lbs. (95 Nm).
  4.  
  5. Install the clevis on the shock absorber. The clevis is installed by tapping it onto the fluid reservoir of the shock absorber using a soft (brass) drift until it is fully seated against the locating tab on the shock absorber. The orientation tab on the locating tab must be positioned in the split of the clevis.
  6.  
  7. Install the pinch bolt retaining the shock clevis to the shock absorber. Tighten the pinch bolt to 65 ft. lbs. (88 Nm).
  8.  
  9. Install the clevis bracket to the lower control arm through-bolt. Do not tighten the through-bolt at this time.
  10.  
  11. Install the upper ball joint into the steering knuckle. Install the nut on the ball joint stud. Tighten the nut to 20 ft. lbs. (27 Nm).
  12.  
  13. Install the routing bracket for the wheel speed sensor cable on the steering knuckle. Install and securely tighten the routing bracket attaching bolt.
    WARNING
    When supporting the lower control arm with a jackstand, do not position the jackstand under the ball joint cap on the lower control arm. Position it in an area of lower control arm shown.



    Click image to see an enlarged view

    Fig. Proper jackstand placement under the lower control arm

  14.  
  15. Lower the vehicle to the ground with a jackstand positioned under the lower control arm. Continue to lower the vehicle so the total weight of the vehicle is supported by the jackstand and the lower control arm.
  16.  
  17. Tighten the shock absorber clevis to lower control arm bushing through-bolt nut to 65 ft. lbs. (88 Nm).
  18.  
  19. Raise and safely support the vehicle.
  20.  
  21. Remove the jackstand.
  22.  
  23. Install the tire and wheel assembly. Progressively tighten the wheel mounting nuts in a crisscross sequence until all nuts are torqued to half specification. Then repeat the tightening sequence to the full specified torque of 100 ft. lbs. (136 Nm).
  24.  
  25. Lower the vehicle.
  26.  

2.4L & 3.0L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable and properly isolate to prevent accidental reconnection.
     
    Front wheel
     
    Brake hose clamp
     
    Front speed sensor harness clamp, if equipped
     
    Sway bar link
     
    Lower control arm
     
    Strut from the steering knuckle
     
    Upper mounting bolts
     
    Strut assembly

    Click image to see an enlarged view

    Fig. Exploded view of the front strut assembly

     

  4.  

To install:

  1. Install or connect the following:

    Strut assembly and torque the upper bolts to 33 ft. lbs. (44 Nm)
     
    Strut assembly to the lower control arm and steering knuckle. Torque the bolts to 221 ft. lbs. (300 Nm).
     
    Sway bar link and torque the nut to 33 ft. lbs. (44 Nm)
     
    Front speed sensor harness clamp, if equipped
     
    Brake hose clamp
     
    Front wheel
     
    Negative battery cable
     

  2.  
  3. Check and adjust the front end alignment, if needed.
  4.  

 
label.common.footer.alt.autozoneLogo