Mitsubishi Car 1999-05

Lower Control Arms

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Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Raise the vehicle and support safely, allowing wheels and suspension to hang freely.
  4.  
  5. Remove the sway bar links from the lower control arm.
  6.  
  7. Disconnect the ball joint stud from the steering knuckle.
  8.  
  9. Remove the inner mounting frame through-bolt and nut.
  10.  
  11. Remove the rear mount bolts. Remove the clamp, if equipped.
  12.  
  13. Remove the rear rod bushing, if servicing.
  14.  

To install:

  1. Assemble the control arm and bushing.
  2.  
  3. Install the control arm to the vehicle and install the through-bolt. Replace the nut and snug temporarily.
  4.  
  5. Install the rear mount clamp, bolts and replacement nuts. Tighten the bolts to 72-87 ft. lbs. (100-120 Nm). Tighten the nuts to 29 ft. lbs. (40 Nm).
  6.  
  7. Connect the ball joint stud to the knuckle. Install a new nut and tighten to 43-52 ft. lbs. (60-72 Nm).
  8.  
  9. Install the sway bar and links.
  10.  
  11. Lower the vehicle to the floor for the final tightening of the frame mount through-bolt.
  12.  
  13. Once the full weight of the vehicle is on the floor, tighten the frame mount through-bolt nuts to 75-90 ft. lbs. (102-122 Nm).
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Check the wheel alignment and adjust if necessary.
  18.  


NOTE
The suspension components should not be tightened until the vehicle's weight is resting on its wheels.

  1. Raise the vehicle and support safely.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. Remove sway bar links or mounting nuts and bolts from lower control arm. Remove the joint cups and bushings.
  6.  
  7. Disconnect the ball joint stud from the steering knuckle.
  8.  
  9. Remove the inner lower arm mounting bolt and nut.
  10.  
  11. Remove the rear mount bolts from the retaining clamp. Remove the rear retainer clamp if equipped.
  12.  
  13. Remove the arm from the vehicle.
  14.  



Click image to see an enlarged view

Fig. Lower control arm assembly and related components-Mirage

To install:

  1. Install the control arm to the vehicle and install the inner mounting bolt. Install new nut and tighten to 78 ft. lbs. (108 Nm).
  2.  
  3. Install the rear mount clamp and bolts. Tighten the clamp mounting bolts to 65 ft. lbs. (90 Nm).
  4.  
  5. Connect the ball joint stud to the knuckle. Install a new nut and tighten to 43-52 ft. lbs. (60-72 Nm).
  6.  
  7. Install the sway bar and links.
  8.  
  9. Lower the vehicle to the floor for the final tightening of the inner frame mount bolt.
  10.  
  11. Install the wheel and tire assembly.
  12.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Raise the vehicle and support safely allowing wheels and suspension to hang freely.
  6.  
  7. Remove the sway bar links from the lower control arm.
  8.  
  9. Disconnect the ball joint stud from the steering knuckle.

    Click image to see an enlarged view

    Fig. Exploded view of the lower control arm removal procedure

  10.  
  11. Remove the inner mounting frame through-bolt and nut.
  12.  
  13. Remove the rear mount bolts. Remove the clamp if equipped.
  14.  
  15. Remove the rear rod bushing if servicing.
  16.  

To install:

  1. Assemble the control arm and bushing.
  2.  
  3. Install the control arm to the vehicle and install the through-bolt. Replace the nut and snug temporarily.
  4.  
  5. Install the rear mount clamp, bolts and replacement nuts. Torque the bolts to 72-87 ft. lbs. (100-120 Nm). Torque the nuts to 29 ft. lbs. (40 Nm).
  6.  
  7. Connect the ball joint stud to the knuckle. Install a new nut and tighten to 43-52 ft. lbs. (60-72 Nm).
  8.  
  9. Install the sway bar and links.
  10.  
  11. Lower the vehicle to the floor for the final tightening of the frame mount through-bolt.
  12.  
  13. Once the full weight of the vehicle is on the floor, tighten the frame mount through-bolt nuts to 75-90 ft. lbs. (102-122 Nm).
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Check the wheel alignment and adjust if necessary.
  18.  

  1. Disconnect the negative battery cable.
  2.  
  3. Raise the vehicle and support safely allowing wheels and suspension to hang freely.
  4.  
  5. Remove or disconnect the following:

    Sway bar links from the lower control arm
     
    Ball joint stud from the steering knuckle
     
    Inner mounting frame through-bolt and nut
     
    Rear mount bolts. Remove the clamp if equipped
     
    Rear rod bushing if servicing
     

  6.  

To install:

  1. Assemble the control arm and bushing.
  2.  
  3. Install or connect the following:

    Control arm to the vehicle and install the through-bolt. Replace the nut and snug temporarily.
     
    Rear mount clamp, bolts and replacement nuts. Torque the bolts to 72-87 ft. lbs. (100-120 Nm). Torque the nuts to 29 ft. lbs. (40 Nm).
     
    Ball joint stud to the knuckle
     
    New nut and tighten to 43-52 ft. lbs. (60-72 Nm)
     
    Sway bar and links
     

  4.  
  5. Lower the vehicle to the floor for the final tightening of the frame mount through-bolt.
  6.  
  7. Once the full weight of the vehicle is on the floor, tighten the frame mount through-bolt nuts to 75-90 ft. lbs. (102-122 Nm).
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Check the wheel alignment and adjust if necessary.
  12.  

The lower lateral arm ball joint and the compression arm ball joint are integral components of the lateral arm and the compression arm respectively. If the ball joints are to be serviced, the arms must be replaced.

  1. Raise and support the vehicle safely.
  2.  
  3. Disconnect both ball joint studs from the steering knuckle.
  4.  
  5. To remove the lower lateral arm, remove the crossmember brackets.
  6.  
  7. Remove or disconnect the following:

    Inner lateral arm mounting bolts and nut
     
    Arm from the vehicle
     
    2 bolts holding the compression arm
     
    Compression arm
     

  8.  

To install:

  1. Assemble the control arms and bushings.
  2.  
  3. Install or connect the following:

    Lateral control arm to the vehicle and install the inner mounting bolts. Install a new nut and snug temporarily.
     
    Compression arm to the vehicle
     
    Ball joint studs to the knuckle
     
    New nuts and tighten to 43-51 ft. lbs. (59-71 Nm)
     

  4.  
  5. Lower the vehicle to the floor for the final tightening.
  6.  
  7. Once the full weight of the vehicle is on the suspension, tighten the lateral arm rear bolt to 71-85 ft. lbs. (98-118 Nm) and the front bolt to the damper fork to 64 ft. lbs. (88 Nm).
  8.  
  9. Torque the bolts for the compression arm to 60 ft. lbs. (83 Nm).
  10.  
  11. Reinstall the crossmember brackets with their mounting bolts. Torque the mounting bolts to 51-58 ft. lbs. (69-78 Nm).
  12.  
  13. Perform an alignment on the vehicle.
  14.  

  1. Raise and support the vehicle safely.
    NOTE
    Do not remove the nut from the ball joint. Loosen it and use special tool MB991897 to avoid possible damage to the ball joint threads. Hang the special tool in place with wire or string to prevent it from falling.

  2.  
  3. To disconnect the lower arm from the knuckle, replace the self locking nut for the lower arm ball joint with a regular nut. This is done because the original one is too large to install the special tool. Install special tool MB991897.
  4.  
  5. Turn the bolt and knob as necessary to make the jaws of the tool parallel. Tighten the bolt by hand and confirm that the jaws are still parallel.
    NOTE
    When adjusting the jaws in parallel, make sure the knob is in the vertical (upward) position.

  6.  
  7. Tighten the bolt with a wrench to disconnect the ball joint.
  8.  
  9. Remove the lower control arm retaining bolts. Remove the lower control arm from the vehicle.
  10.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Check and adjust the front end alignment, as required.

    Click image to see an enlarged view

    Fig. Front lower control arm assembly-2004-2005 Eclipse

  4.  



Click image to see an enlarged view

Fig. Exploded view of the compression and lateral lower control arm assemblies-1999 Models

The lower lateral arm ball joint and the compression arm ball joint are integral components of the lateral arm and the compression arm respectively. If the ball joints are to be serviced, the arms must be replaced.

  1. Raise and support the vehicle safely.
  2.  
  3. Disconnect both ball joint studs from the steering knuckle.
  4.  
  5. To remove the lower lateral arm, remove the crossmember brackets.
  6.  
  7. Remove or disconnect the following:

    Inner lateral arm mounting bolts and nut
     
    Arm from the vehicle
     
    2 bolts holding the compression arm
     
    Compression arm
     

  8.  

To install:

  1. Assemble the control arms and bushings.
  2.  
  3. Install or connect the following:

    Lateral control arm to the vehicle and install the inner mounting bolts. Install a new nut and snug temporarily.
     
    Compression arm to the vehicle
     
    Ball joint studs to the knuckle
     
    New nuts and tighten to 43-51 ft. lbs. (59-71 Nm)
     

  4.  
  5. Lower the vehicle to the floor for the final tightening.
  6.  
  7. Once the full weight of the vehicle is on the suspension, tighten the lateral arm rear bolt to 71-85 ft. lbs. (98-118 Nm) and the front bolt to the damper fork to 64 ft. lbs. (88 Nm).
  8.  
  9. Torque the bolts for the compression arm to 60 ft. lbs. (83 Nm).
  10.  
  11. Reinstall the crossmember brackets with their mounting bolts. Torque the mounting bolts to 51-58 ft. lbs. (69-78 Nm).
  12.  
  13. Perform an alignment on the vehicle.
  14.  

  1. Raise and support the vehicle safely.
    NOTE
    Do not remove the nut from the ball joint. Loosen it and use special tool MB991897 to avoid possible damage to the ball joint threads. Hang the special tool in place with wire or string to prevent it from falling.

  2.  
  3. To disconnect the lower arm from the knuckle, replace the self locking nut for the lower arm ball joint with a regular nut. This is done because the original one is too large to install the special tool. Install special tool MB991897.
  4.  
  5. Turn the bolt and knob as necessary to make the jaws of the tool parallel. Tighten the bolt by hand and confirm that the jaws are still parallel.
    NOTE
    When adjusting the jaws in parallel, make sure the knob is in the vertical (upward) position.

  6.  
  7. Tighten the bolt with a wrench to disconnect the ball joint.
  8.  
  9. Remove the lower control arm retaining bolts. Remove the lower control arm from the vehicle.

    Click image to see an enlarged view

    Fig. Front lower control arm assembly-2004-2005 Galant

  10.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Check and adjust the front end alignment, as required.
  4.  

  1. Raise the vehicle and support safely.
  2.  
  3. Remove or disconnect the following:

    Wheel and tire assembly
     
    Stabilizer bar self-locking nut, rubber bushings, stabilizer bar and collar. Discard the nut.
     
    Lower control arm-to-knuckle bolt and nut
     

  4.  
  5. Lift the transaxle with a jack, then remove the front control arm-to-crossmember bolt.

    Lower control arm
     

  6.  

To install:

  1. Install or connect the following:

    Lower control arm into the vehicle
     
    Lower control arm-to-crossmember bolts. Torque the bottom bolt to 123 ft. lbs. (167 Nm) and the side bolt snug until the vehicle is lowered.
     
    Lower control arm-to-steering knuckle bolt. Torque to 80 ft. lbs. (108 Nm).
     
    Stabilizer bar collar, stabilizer bar, bushings and new self-locking nut.
     

  2.  
  3. Lower the vehicle and install the wheels. Then, with the weight of the vehicle on the wheels, torque the side control arm-to-crossmember bolt to 137 ft. lbs. (186 Nm).
  4.  
  5. Check and adjust the front end alignment, as required.

    Click image to see an enlarged view

    Fig. Front lower control arm assembly -Lancer

  6.  


NOTE
The suspension components should not be tightened until the vehicle's weight is resting on its wheels.

  1. Raise the vehicle and support safely.
  2.  
  3. Remove or disconnect the following:

    Wheel and tire assembly
     
    Stabilizer bar links or mounting nuts and bolts from lower control arm. Remove the joint cups and bushings.
     
    Ball joint stud from the steering knuckle
     
    Inner lower arm mounting bolt and nut
     
    Rear mount bolts from the retaining clamp. Remove the rear retainer clamp if equipped.
     
    Arm from the vehicle
     

  4.  

To install:

  1. Install or connect the following:

    Control arm to the vehicle and install the inner mounting bolt. Install new nut and tighten to 78 ft. lbs. (108 Nm).
     
    Rear mount clamp and bolts. Torque the clamp mounting bolts to 65 ft. lbs. (90 Nm).
     
    Ball joint stud to the knuckle. Install a new nut and tighten to 43-52 ft. lbs. (60-72 Nm).
     
    Sway bar and links
     

  2.  
  3. Lower the vehicle to the floor for the final tightening of the inner frame mount bolt.
  4.  
  5. Install the wheel and tire assembly.

    Click image to see an enlarged view

    Fig. Front lower control arm assembly-Mirage

  6.  

Compression Lower Control Arm
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the front wheel and tire assembly.
  4.  
  5. Use the proper tool and disconnect the compression lower arm ball joint from the steering knuckle.

    Click image to see an enlarged view

    Fig. Separate the compression lower ball joint from the knuckle

  6.  
  7. Remove the two mounting bolts and remove the compression lower arm.

    Click image to see an enlarged view

    Fig. Unfasten the two compression lower control arm (see arrows)



    Click image to see an enlarged view

    Fig. Remove the remaining mounting bolt . . .



    Click image to see an enlarged view

    Fig. . . . then remove the compression lower control arm from the vehicle

  8.  

To install:

  1. Install the compression lower arm. Tighten the two mounting bolts to 60 ft. lbs. (81 Nm).
  2.  
  3. Using a new self-locking nut, connect the ball joint to the knuckle assembly. Tighten the nut to 43-51 ft. lbs. (59-71 Nm).
  4.  
  5. Install the wheel assembly and safely lower the vehicle to the floor.
  6.  
  7. Check and adjust the front wheel alignment if necessary.
  8.  

Evolution
  1. Raise and support the vehicle safely.
  2.  
  3. Remove the stabilizer link nut. Separate the lower arm and knuckle connection.
  4.  
  5. Remove the lower arm and crossmember connection.
  6.  
  7. Remove the crossmember bar bracket.
  8.  
  9. Remove the lower control arm assembly.
  10.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Check and adjust the front end alignment, as required.

    Click image to see an enlarged view

    Fig. Front lower control arm assembly-Evolution

  4.  

Lateral Lower Arm
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel assembly.
  4.  
  5. Remove the stay (bracket).
  6.  
  7. Remove the shock absorber lower mounting bolt.
  8.  
  9. Use the proper puller tool and disconnect the lateral lower arm from the knuckle assembly.
  10.  
  11. Remove the lateral lower arm mounting bolt and the lateral arm.

    Click image to see an enlarged view

    Fig. After separating the later lower ball joint from the knuckle, unfasten the mounting bolt . . .



    Click image to see an enlarged view

    Fig. . . . then remove the mounting bolt and pull the lateral lower control arm from the vehicle

  12.  

To install:

  1. Install the lateral lower arm and temporarily install the mounting bolt. Do not tighten the bolt until the vehicle is on the floor at normal riding height.

    Click image to see an enlarged view

    Fig. To install, position the lateral lower arm in the vehicle, then install the mounting bolt hand-tight

  2.  
  3. Use a new self-locking nut and connect the ball joint to the knuckle assembly. Tighten the self-locking nut to 43-51 ft. lbs. (59-71 Nm).
  4.  
  5. Install the shock absorber lower mounting bolt, secure with the nut and torque to 64 ft. lbs. (88 Nm).
  6.  
  7. Install the stay with the bolts and tighten them to 51-58 ft. lbs. (69-78 Nm).
  8.  
  9. Install the wheel assembly and lower the vehicle to the floor.
  10.  
  11. Tighten the lateral lower arm through-bolt and nut to 71-85 ft. lbs. (98-118 Nm).
  12.  
  13. Check and adjust the front wheel alignment if necessary.
  14.  

 
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