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S-cam won't spin freely after bushing replacement

Discussion in 'Trucks [ Eighteen Wheelers ]' started by RoadRanger^^, Sep 26, 2025 at 8:15 PM.

  1. Sep 26, 2025 at 8:15 PM #1
    RoadRanger^^

    RoadRanger^^ Medium Load Member

    307
    115
    Apr 17, 2018
    Columbus, OH
    0
    Hi fellas,
    I was working on my Vanguard dry van trailer 2008 and decided to do all wheel seals, scam bushing and s cams replacement they are all worn and all seals are leaking. I installed new s cam bushings and when i slide the s cam it is moving freely as soon as I slide it in the other bushing by the slack adjuster and i tight those 4 bolts the s cam is locking. Looks like it is not straight to me by looking at the bushing by the slack adjuster, any help is welcome

    thanks!
     
    RoadRanger^^, Sep 26, 2025 at 8:15 PM
    RoadRanger^^, Sep 26, 2025 at 8:15 PM
    #1
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  3. Sep 27, 2025 at 6:32 AM #2
    Seattle Mechanic

    Seattle Mechanic Bobtail Member

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    Today
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    Check that you have the correct parts. Check for a bent bracket at the inner bushing. It's going to be tight especially if you haven't greased anything yet. Make sure you have all of the hardware installed correctly and don't have any brackets bent and put it together with the brakes and slack adjuster grease it up good and should be ready to go.
     
    Seattle Mechanic, Sep 27, 2025 at 6:32 AM
    Seattle Mechanic, Sep 27, 2025 at 6:32 AM
    #2
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