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    1942 Oldsmobile Sixty 6 3.9L 1BL 6cyl

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    See Details

    Subaru Car 1998-05

    Lower Control Arms

    Print

    Bushing Replacement



    1. Use a suitable press to remove and install the bushings.
    2.  

    Front Bushing


    Click image to see an enlarged view

    Fig. The front control arm bushing must be installed in the proper direction

    The front control arm bushing must be installed in the proper direction
    1. Remove the control arm from the vehicle.
    2.  
    3. Mount the control arm in a soft jawed vise.
    4.  
    5. Use either a press or a control arm bushing fixture (C-clamp like tool) along with a slotted washer and a piece of pipe (slightly larger than the bushing) and press out the old bushing.
    6.  
    7. Clean the inside bushing contact surfaces of rust and old rubber.
    8.  

    To install:

    1. Apply a light coating of grease to both the replacement busing and bushing contact surfaces on the control arm.
    2.  
    3. Align the bushing according to the illustration.
    4.  
    5. Install the bushing using the press tool. A bushing install clamp can also be used to compress the bushing into the control arm.
    6.  
    7. Install the control arm on the vehicle.
    8.  



    Click image to see an enlarged view

    Fig. The front control arm bushing must be installed in the proper direction

    The front control arm bushing must be installed in the proper direction
    1. Remove the control arm from the vehicle.
    2.  
    3. Mount the control arm in a soft jawed vise.
    4.  
    5. Use either a press or a control arm bushing fixture (C-clamp like tool) along with a slotted washer and a piece of pipe (slightly larger than the bushing) and press out the old bushing.
    6.  
    7. Clean the inside bushing contact surfaces of rust and old rubber.
    8.  

    To install:

    1. Apply a light coating of grease to both the replacement busing and bushing contact surfaces on the control arm.
    2.  
    3. Align the bushing according to the illustration.
    4.  
    5. Install the bushing using the press tool. A bushing install clamp can also be used to compress the bushing into the control arm.
    6.  
    7. Install the control arm on the vehicle.
    8.  

    Rear Bushing
    1. Remove the control arm from the vehicle.
    2.  
    3. Scribe a matchmark on the control arm and rear bushing.
    4.  
    5. Loosen the nut and remove the rear bushing. Discard the nut.
    6.  

    To install:

    1. Install the rear bushing to the control arm, making sure to align the marks made during removal.
    2.  
    3. Install a new nut and tighten to 140 ft. lbs. (190 Nm) on WRX models or 137 ft. lbs. (168 Nm) on all models except WRX.
    4.  

    1. Remove the control arm from the vehicle.
    2.  
    3. Scribe a matchmark on the control arm and rear bushing.
    4.  
    5. Loosen the nut and remove the rear bushing. Discard the nut.
    6.  

    To install:

    1. Install the rear bushing to the control arm, making sure to align the marks made during removal.
    2.  
    3. Install a new nut and tighten to 137 ft. lbs. (168 Nm).
    4.  

    Removal & Installation





    Click image to see an enlarged view

    Fig. Exploded view of the lower control arm (transverse link)-Impreza and Legacy

    Exploded view of the lower control arm (transverse link)-Impreza and Legacy
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2.  
    3. Remove or disconnect the following:

      Tire and wheel assembly
       
      Sway link from the lower control arm
       
      Bolt securing the ball joint to the steering knuckle
       
      Nuts (NOT the bolts) securing the lower control arm to the crossmember
       
      2 bolts holding the bushing bracket of the control arm to the body
       
      Ball joint from the steering knuckle
       
      Bolts securing the lower control arm to the crossmember, then the lower control
       

    4.  

    To install:

    1. Install or connect the following:
      NOTE
      These bolts should be tightened so they can still move back and forth in the oblong shaped hole in the bracket which holds the bushing.


      WARNING
      Discard loosened self-locking nut and replace with a new one.



      Lower control arm; temporarily tighten the 2 bolts used to secure the rear bushing of the lower control arm to the body
       



      Bolts used to secure the lower control arm to the crossmember and temporarily tighten the nuts
       
      Ball joint into the steering knuckle and secure with the retaining bolt
       
      Sway link to the control arm and temporarily tighten the bolts
       

    2.  
    3. Lower the vehicle, then tighten the bolts to the following specifications:
      1. Lower control arm-to-sway bar: 21 ft. lbs. (27 Nm).
        NOTE
        Move the rear bushing back and forth until the control arm-to-rear bushing clearance if established. Refer to the illustration for specifications.



        Click image to see an enlarged view

        Fig. Proper control arm-to-rear bushing clearance specifications-Impreza and Legacy

        Proper control arm-to-rear bushing clearance specifications-Impreza and Legacy
      2.  
      3. Lower control arm-to-crossmember: 72 ft. lbs. (98 Nm).
      4.  
      5. Lower control arm-to-rear link bushing-to-body: 181 ft. lbs. (245 Nm).
      6.  

    4.  
    5. Check the wheel alignment and adjust if necessary.
    6.  



    Click image to see an enlarged view

    Fig. Lower control arm assembly-Legacy and Impreza (1997)

    Lower control arm assembly-Legacy and Impreza (1997)
    1. Raise and support the vehicle safely on jackstands.
    2.  
    3. Remove the wheel and tire assembly.
    4.  
    5. Disconnect the sway bar from the lower control arm.
    6.  
    7. Remove the bolt securing the ball joint to the steering knuckle.
    8.  
    9. Remove the nuts (not bolts) securing the lower control arm to the crossmember.
    10.  
    11. Remove the bolts securing the bushing bracket of the lower control arm to body.
    12.  
    13. Remove the lower control arm-to-crossmember bolts, then remove the lower control arm.
    14.  

    To install:

    1. Install the lower control arm and temporarily tighten the two bolts used to secure the rear bushing of the lower control arm to the body.
      NOTE
      These bolts should be tightened to such an extent that they can still move back and forth in the oblong shaped hole in the bracket which holds the busing.

    2.  
    3. Install the bolts used to connect the lower control arm to the crossmember and temporarily tighten the nuts. Insert the ball joint, and tighten the bolt.
    4.  
    5. Connect the sway bar link to the lower control arm and temporarily tighten the bolts.
    6.  
    7. Lower the vehicle and tighten the bolts to following specifications:
      1. Lower control arm-to-sway bar link; 21 ft. lbs. (27 Nm)
      2.  
      3. Lower control arm-to-crossmember; 72 ft. lbs. (98 Nm)
      4.  
      5. Lower control arm rear link bushing-to-body; 181 ft. lbs. (245 Nm)
        NOTE
        Move the rear bushing back and forth until the lower control arm link-to-rear bushing clearance is established before tightening the bolts.

      6.  

    8.  



    Click image to see an enlarged view

    Fig. Lower control arm assembly-SVX

    Lower control arm assembly-SVX

    Click image to see an enlarged view

    Fig. Remove the rear support bracket-SVX

    Remove the rear support bracket-SVX

    Click image to see an enlarged view

    Fig. Remove the bolts-SVX

    Remove the bolts-SVX
    1. Raise and safely support the vehicle on jackstands.
    2.  
    3. Remove the tire and wheel assembly.
    4.  
    5. Remove the lower ball joint-to-steering knuckle pinch bolt.
    6.  
    7. Separate the ball joint from the steering knuckle.
    8.  
    9. Remove the three bolts mounting the rear support and remove the support.
    10.  
    11. Remove the front and rear control arm through-bolts, then remove the control arm.
    12.  

    To install:

    1. Position the control arm on the vehicle, and install the front and rear through-bolts. DO NOT tighten the bolts at this time.
      NOTE
      The lower control arm through-bolts must be tightened with the weight of the vehicle on the suspension.

    2.  
    3. Line up the ball joint with the hole in the steering knuckle and insert the ball joint until the notch in the ball stud is visible through the steering knuckle hole and tighten the pinch bolt to 38 ft. lbs. (52 Nm). Install the tire and wheel assembly.
    4.  
    5. Lower the vehicle. Tighten the lower control arm through-bolts to 65 ft. lbs. (88 Nm).
    6.  
    7. Raise the vehicle. Install the rear support and tighten the rear support mounting bolts to 108 ft. lbs. (147 Nm).
    8.  
    9. Lower the vehicle. Check the front end alignment and adjust as necessary.
    10.  

    1. Disconnect the negative battery cable.
    2.  
    3. Raise and support the vehicle safely.
    4.  
    5. Remove the tire and wheel.
    6.  
    7. Remove the sub frame, on Impreza and WRX.
    8.  
    9. Disconnect the stabilizer link from the transverse link.
    10.  
    11. Remove the bolt securing the ball joint of the transverse link to housing.
    12.  
    13. Remove the nut (do not remove the bolt) securing the transverse link to the crossmember.
    14.  
    15. Remove the two bolts securing the bushing bracket of the transverse link to the vehicle body at the rear bushing.
    16.  
    17. Remove the ball joint from the housing.
    18.  
    19. Remove the bolt securing the transverse link to the crossmember. Remove the transverse link from the crossmember.
    20.  

    To install:

    1. Install the transverse link to its mounting.
    2.  
    3. Temporarily tighten the two bolts used to secure the rear bushing of the transverse link.
      NOTE
      These bolts should be tightened so that they can still move back and forth in the oblong shaped hole in the bracket, which holds the bushing.

    4.  
    5. Continue the installation in the reverse order of the removal procedure.
    6.  
    7. Always fully tighten the rubber bushings when the wheels are in full contact with the ground and the vehicle is at curb height.
    8.  
    9. Tighten the transverse link rear bushing to body to 184 ft. lbs. (250 Nm) on Impreza and WRX. Tighten the transverse link rear bushing to body to 181 ft. lbs. (250 Nm) on Baja.
      NOTE
      Move the rear bushing back and forth until the transverse link to rear bushing clearance is established, before tightening.



      Click image to see an enlarged view

      Fig. Transverse link rear bushing alignment location and specification-2005 Impreza, WRX and Baja

      Transverse link rear bushing alignment location and specification-2005 Impreza, WRX and Baja
    10.  
    11. Check and adjust alignment, as required.
    12.  

    1. Disconnect the negative battery cable.
    2.  
    3. Raise and support the vehicle safely.
    4.  
    5. Remove the tire and wheel.
    6.  
    7. Remove the front crossmember support plate.
    8.  
    9. Remove the stabilizer bar.
    10.  
    11. Remove the ball joint from the front arm.
    12.  
    13. Remove the nut securing the front arm to the crossmember.
      NOTE
      Do not remove the bolt.

    14.  
    15. Remove the front arm support plate.
    16.  
    17. Remove the bolt securing the front arm to the crossmember and pull the front arm out of the crossmember.
    18.  
    19. To remove the stud bolt, use tool ST20299AG020.
      NOTE
      Do not remove the stud bolt unless it is necessary. Always replace the removed parts with new ones.

    20.  

    To install:

    1. Installation is the reverse of the removal procedure.
    2.  
    3. Tighten the stud bolt to 81.1 ft. lbs. (110 Nm), if removed.
    4.  
    5. Tighten the support plate to front arm bolts to 81.1 ft. lbs. (110 Nm).
    6.  
    7. Tighten the support plate to body bolts to 110.6 ft. lbs. (150 Nm).
    8.  
    9. Always fully tighten the rubber bushings when the wheels are in full contact with the ground and the vehicle is at curb height.
    10.  
    11. Check and adjust alignment, as required.
    12.  

    Except WRX


    Click image to see an enlarged view

    Fig. Exploded view of the lower control arm (transverse link)-Impreza and Legacy

    Exploded view of the lower control arm (transverse link)-Impreza and Legacy
    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Remove or disconnect the following:

      Tire and wheel assembly
       

    4.  
    5. On Impreza models, remove the sub-frame as follows:
      1. Remove the bolt cover.
      2.  
      3. Remove the clip.
      4.  
      5. Loosen the sub-frame bolt (1) and leave it screwed in a few threads. Remove the remaining bolts in the following order: 2, 3, 4, 5 and 6. See illustration for bolt location.
      6.  
      7. Sway link from the lower control arm
      8.  
      9. Bolt securing the ball joint to the steering knuckle
      10.  
      11. Nuts (NOT the bolts) securing the lower control arm to the crossmember
      12.  
      13. 2 bolts holding the bushing bracket of the control arm to the body
      14.  
      15. Ball joint from the steering knuckle
      16.  
      17. Bolts securing the lower control arm to the crossmember, then the lower control
      18.  

    6.  

    To install:



    Install or connect the following:
    1. Lower control arm; temporarily tighten the 2 bolts used to secure the rear bushing of the lower control arm to the body
    2.  

     


    NOTE
    These bolts should be tightened so they can still move back and forth in the oblong shaped hole in the bracket that holds the bushing.



    On Impreza models, install the sub-frame as follows:
     
    Install the sub-frame and bolts. Tighten the bolts as follows, referring to the illustration for location:
    1. T1: 25 ft. lbs. (34 Nm).
    2.  
    3. T2: 41 ft. lbs. (55 Nm).
    4.  
    5. T3: 52 ft. lbs. (71 Nm).
    6.  

     
    Install or connect the following:
    1. Bolts used to secure the lower control arm to the crossmember and temporarily tighten the nuts
    2.  
    3. Ball joint into the steering knuckle and secure with the retaining bolt
    4.  
    5. Sway link to the control arm and temporarily tighten the bolts
    6.  

     


    WARNING
    Discard loosened self-locking nut and replace with a new one.



    Lower the vehicle, then tighten the bolts to the following specifications:
    1. Lower control arm-to-sway bar: 22 ft. lbs. (30 Nm). On Impreza models tighten the retainers on models except sedan turbo to 22 ft. lbs. (30 Nm) turbo and 33 ft. lbs. on sedan turbo models.
    2.  

     


    NOTE
    Move the rear bushing back and forth until the control arm-to-rear bushing clearance if established. Refer to the illustration for specifications.



    Click image to see an enlarged view

    Fig. Proper control arm-to-rear bushing clearance specifications-all models

    Proper control arm-to-rear bushing clearance specifications-all models
    1. Lower control arm-to-crossmember: 74 ft. lbs. (100 Nm).
    2.  
    3. Lower control arm-to-rear link bushing-to-body: 184 ft. lbs. (250 Nm).
    4.  

    1. Check the wheel alignment and adjust if necessary.
    2.  



    Click image to see an enlarged view

    Fig. Lower control arm (transverse link) and related components-1998-2004 Impreza and Legacy

    Lower control arm (transverse link) and related components-1998-2004 Impreza and Legacy
    1. Remove or disconnect the following:

      Tire and wheel assembly
       

    2.  
    3. On Impreza, remove the sub-frame as follows:
      1. Remove the bolt cover.
      2.  
      3. Remove the clip.
      4.  
      5. Loosen the sub-frame bolt (1) and leave it screwed in a few threads. Remove the remaining bolts in the following order: 2, 3, 4, 5 and 6. See illustration for bolt location.

        Stabilizer link from the lower control arm
         
        Bolt securing the ball joint to the steering knuckle
         
        Nuts (NOT the bolts) securing the lower control arm to the crossmember
         
        2 bolts holding the bushing bracket of the control arm to the body
         
        Ball joint from the steering knuckle
         
        Bolts securing the lower control arm to the crossmember, then the lower control
         

      6.  

    4.  

    To install:

    1. Install or connect the following:
      NOTE
      These bolts should be tightened so they can still move back and forth in the oblong shaped hole in the bracket that holds the bushing.



      Lower control arm; temporarily tighten the 2 bolts used to secure the rear bushing of the lower control arm to the body
       

    2.  
    3. On Impreza , install the sub frame as follows:
    4.  
    5. Install the sub-frame and bolts. Tighten the bolts as follows, referring to the illustration for location:
      1. T1: 25 ft. lbs. (34 Nm).
      2.  
      3. T2: 41 ft. lbs. (55 Nm).
      4.  
      5. T3: 52 ft. lbs. (71 Nm).
      6.  

    6.  
    7. Install or connect the following:
      WARNING
      Discard loosened self-locking nut and replace with a new one.



      Bolts used to secure the lower control arm to the crossmember and temporarily tighten the nuts
       
      Ball joint into the steering knuckle and secure with the retaining bolt
       
      Stabilizer link to the control arm and temporarily tighten the bolts
       

    8.  
    9. Lower the vehicle, and then tighten the bolts to the following specifications:
      1. Lower control arm-to-sway bar: 22 ft. lbs. (30 Nm). On Impreza tighten the retainers to on vehicles except sedan turbocharged to 22 ft. lbs. (30 Nm) and 33 ft. lbs. on sedan turbocharged.
        NOTE
        Move the rear bushing back and forth until the control arm-to-rear bushing clearance if established. Refer to the illustration for specifications.



        Click image to see an enlarged view

        Fig. Proper control arm to rear bushing clearance specifications-2002

        Proper control arm to rear bushing clearance specifications-2002
      2.  
      3. Lower control arm-to-crossmember: 74 ft. lbs. (100 Nm).
      4.  
      5. Lower control arm-to-rear link bushing-to-body: 184 ft. lbs. (250 Nm).
      6.  

    10.  
    11. Check the wheel alignment and adjust if necessary.
    12.  

    WRX
    1. Remove or disconnect the following:

      Tire and wheel assembly
       

    2.  
    3. Remove the sub-frame as follows:
      1. Remove the bolt cover.
      2.  
      3. Remove the clip.
      4.  
      5. Loosen the sub-frame bolt (1) and leave it screwed in a few threads. Remove the remaining bolts in the following order: 2, 3, 4, 5 and 6. See illustration for bolt location.

        Sway link from the lower control arm
         
        Bolt securing the ball joint to the steering knuckle
         
        Nuts (NOT the bolts) securing the lower control arm to the crossmember
         
        2 bolts holding the bushing bracket of the control arm to the body
         
        Ball joint from the steering knuckle
         
        Bolts securing the lower control arm to the crossmember, then the lower control
         

      6.  

    4.  

    To install:

    1. Install or connect the following:
      NOTE
      These bolts should be tightened so they can still move back and forth in the oblong shaped hole in the bracket that holds the bushing.


      WARNING
      Discard loosened self-locking nut and replace with a new one.



      Lower control arm; temporarily tighten the 2 bolts used to secure the rear bushing of the lower control arm to the body
       



      Bolts used to secure the lower control arm to the crossmember and temporarily tighten the nuts
       
      Ball joint into the steering knuckle and secure with the retaining bolt
       
      Sway link to the control arm and temporarily tighten the bolts
       

    2.  
    3. Lower the vehicle, and then tighten the bolts to the following specifications:
      1. Lower control arm-to-sway bar: 33 ft. lbs. (45 Nm) on sedan or 22 ft. lbs. (30 Nm) on all except sedan.
      2.  
      3. Lower control arm and crossmember to 74 ft. lbs. (100 Nm).
      4.  
      5. Lower control arm rear bushing and body to 184 ft. lbs. (250 Nm).
        NOTE
        Move the rear bushing back and forth until the control arm-to-rear bushing clearance if established. Refer to the illustration for specifications.

      6.  

    4.  
    5. Install the sub-frame and bolts. Tighten the bolts in the proper sequence to specification:
      1. T1: 25 ft. lbs. (34 Nm).
      2.  
      3. T2: 41 ft. lbs. (55 Nm).
      4.  
      5. T3: 52 ft. lbs. (71 Nm).
      6.  

    6.  
    7. Check the wheel alignment and adjust if necessary.
    8.  

    Wrx Models
    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Remove or disconnect the following:
      1. Tire and wheel assembly
      2.  

    4.  
    5. Remove the sub-frame as follows:

      Remove the bolt cover.
       
      Remove the clip.
       
      Loosen the sub-frame bolt (1) and leave it screwed in a few threads. Remove the remaining bolts in the following order: 2, 3, 4, 5 and 6. See illustration for bolt location.
       
      Sway link from the lower control arm
       
      Bolt securing the ball joint to the steering knuckle
       
      Nuts (NOT the bolts) securing the lower control arm to the crossmember
       
      2 bolts holding the bushing bracket of the control arm to the body
       
      Ball joint from the steering knuckle
       
      Bolts securing the lower control arm to the crossmember, then the lower control
       

    6.  


      Click image to see an enlarged view

      Fig. Location of the sub-frame bolts-WRX models

      Location of the sub-frame bolts-WRX models

    To install:

    1. Install or connect the following:

      Lower control arm; temporarily tighten the 2 bolts used to secure the rear bushing of the lower control arm to the body
       

    2.  


    NOTE
    These bolts should be tightened so they can still move back and forth in the oblong shaped hole in the bracket that holds the bushing.

    1. Bolts used to secure the lower control arm to the crossmember and temporarily tighten the nuts
    2.  
    3. Ball joint into the steering knuckle and secure with the retaining bolt
    4.  
    5. Sway link to the control arm and temporarily tighten the bolts
    6.  


    WARNING
    Discard loosened self-locking nut and replace with a new one.



    Lower the vehicle, then tighten the bolts to the following specifications:

    Lower control arm-to-sway bar: 33 ft. lbs. (45 Nm) on sedan models or 22 ft. lbs. (30 Nm) on all except sedan models.
     
    Lower control arm and crossmember to 74 ft. lbs. (100 Nm).
     
    Lower control arm rear bushing and body to 184 ft. lbs. (250 Nm).
     

     


    NOTE
    Move the rear bushing back and forth until the control arm-to-rear bushing clearance if established. Refer to the illustration for specifications.

    1. Install the sub-frame and bolts. Tighten the bolts as follows referring to the illustration for location:
      1. T1: 25 ft. lbs. (34 Nm).
      2.  
      3. T2: 41 ft. lbs. (55 Nm).
      4.  
      5. T3: 52 ft. lbs. (71 Nm).
      6.  

    2.  
    3. Check the wheel alignment and adjust if necessary.
    4.  


      Click image to see an enlarged view

      Fig. Tighten the sub-frame bolts to the specification outlined in the procedure-WRX models

      Tighten the sub-frame bolts to the specification outlined in the procedure-WRX models

     
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