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Pete 389 Drum to Disc conversion. Any advice?

Discussion in 'Peterbilt Forum' started by moraima80, Sep 29, 2023.

Page 1 of 2
  1. Sep 29, 2023 #1
    moraima80

    moraima80 Bobtail Member

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    Apr 16, 2014
    0
    I have an 08 389 with drum brakes and are wanting to convert to disc. Anyone ever done that? Is there a conversion kit any company sells? Any input is greatly appreciated.
     
    moraima80, Sep 29, 2023
    moraima80, Sep 29, 2023
    #1
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  3. Sep 29, 2023 #2
    roundhouse

    roundhouse Road Train Member

    3,130
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    Jul 11, 2018
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    All 6 wheels ?
    Or just the steers ?
     
    roundhouse, Sep 29, 2023
    roundhouse, Sep 29, 2023
    #2
  4. Sep 29, 2023 #3
    wichris

    wichris Road Train Member

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    Jan 17, 2011
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    All the mounts for the drum brakes and S cams have to be cut off and the caliper mounts welded on. Different hubs also.
     
    wichris, Sep 29, 2023
    wichris, Sep 29, 2023
    #3
    Last Call Thanks this.
  5. Sep 29, 2023 #4
    moraima80

    moraima80 Bobtail Member

    3
    1
    Apr 16, 2014
    0
    All around.
     
    moraima80, Sep 29, 2023
    moraima80, Sep 29, 2023
    #4
  7. Sep 29, 2023 #5
    moraima80

    moraima80 Bobtail Member

    3
    1
    Apr 16, 2014
    0
    I believe removing spider brackets removes all including s-cam bracket and chamber bracket. What I'd like to know is what caliper bracket can be used or if a different spider bracket is needed. And yes, a different hub.
     
    moraima80, Sep 29, 2023
    moraima80, Sep 29, 2023
    #5
    Nostalgic Thanks this.
  8. Sep 29, 2023 #6
    wichris

    wichris Road Train Member

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    Spider bracket has to be removed.
    Spider/Caliper bracket has to be whatever system you're going to use. Meritor, Bendix, ect.
     
    wichris, Sep 29, 2023
    wichris, Sep 29, 2023
    #6
  9. Sep 29, 2023 #7
    86scotty

    86scotty Road Train Member

    4,376
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    Appalachia
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    I'd go price calipers first and then you'll likely change your mind.
     
    86scotty, Sep 29, 2023
    86scotty, Sep 29, 2023
    #7
    Ssgtkevin and Last Call Thank this.
  10. Sep 29, 2023 #8
    wichris

    wichris Road Train Member

    4,243
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    Jan 17, 2011
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    Did you have to get new one(s)?

    That will get you to pop the end caps off once in awhile and squirt some graphite grease in them. LOL
     
    wichris, Sep 29, 2023
    wichris, Sep 29, 2023
    #8
  11. Sep 29, 2023 #9
    pavrom

    pavrom Road Train Member

    3,162
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    Apr 29, 2012
    NE illinois
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    Wouldn't it be cheaper just to swap the whole axles?! ... from wrecked unit
     
    pavrom, Sep 29, 2023
    pavrom, Sep 29, 2023
    #9
    Last Call Thanks this.
  12. Sep 29, 2023 #10
    Last Call

    Last Call Road Train Member

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    Mar 15, 2021
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    This is the most Is feasible way ..IMO
     
    Last Call, Sep 29, 2023
    Last Call, Sep 29, 2023
    #10
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