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why 135 foot pounds

Discussion in '200, Avenger/Sebring, Cirrus/Stratus/Breeze' started by genso, Jul 27, 2017.

  1. genso

    genso New Member

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    I replaced lower control arms on 1999 cirrus and have a question..the manual says not to torque the front lower bolt on control arm til last and to torque it to 135 ft pounds...why? I'm not sure if I can even tighten it that much...what would happen if I tightened it first, as I did, to 85 ft pounds...will it damage something? I sure hope not.
     
  2. dana44

    Ad-Free Member

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    Usually a tightening sequence and amount is done as a means of centering or aligning items in a given sequence . It is a pre-loading method and should be followed. You can always use an extension on the end of a torque wrench to get the proper reading, the amount of 135 lb-ft is determined by the factory and needed to keep things from coming loose while driving down the road.
     
    DC-93 likes this.
  3. ImperialCrown

    Level III Supporter

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    When doing a final tightening on suspension components, it is good practice to give the final snug with the car sitting on the ground with the weight on the wheels in a normal, relaxed geometry. This way the bushings are set in the normal position and not with the arms hanging down like with the car on a jack.
    When bushings are tightened with the arms hanging and then the car is set down on the ground, the bushing rubber will 'twist' and possibly tear from the strain:
    4e5b30_5a210f5ec53243f5b1729fc336528e18.jpg
    We have a drive-on lift with ramps at work so the car is sitting with the full weight on its tires while we work underneath the car.
     
  4. genso

    genso New Member

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    so did I damage my front bushing? the car is still on jack.
     
  5. ImperialCrown

    Level III Supporter

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