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Brake Rotor Separation

Discussion in '2nd Gen. Tacomas (2005-2015)' started by george3, Aug 12, 2023.

  1. Aug 12, 2023 at 5:30 PM
    #1
    george3

    george3 [OP] Well-Known Member

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    Heard and felt something on the front left when I put on the brake - turned out the wheel hub had separated from the rotor disc - scary. Anyone else have that happen ? Be careful when U R buying rotors.
     
  2. Aug 12, 2023 at 6:26 PM
    #2
    TnShooter

    TnShooter The TacomaWorld Stray

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    How bad were they rusted?
     
  3. Aug 12, 2023 at 6:27 PM
    #3
    Clearwater Bill

    Clearwater Bill Never answer an anonymous letter

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  4. Aug 12, 2023 at 6:34 PM
    #4
    george3

    george3 [OP] Well-Known Member

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    Just looked at the pictures - rust. I don't know how to post pics.
     
    TnShooter[QUOTED] likes this.
  5. Aug 12, 2023 at 6:39 PM
    #5
    george3

    george3 [OP] Well-Known Member

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    If you tell me how I'll give it a try - pics are on my phone.
     
  6. Aug 12, 2023 at 6:44 PM
    #6
    tcjacado

    tcjacado Well-Known Member

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    4500 messages/ posts and you don't know how to post a picture hereo_Oo_O
    Go to "upload a file" next to " post reply":facepalm:
     
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  7. Aug 12, 2023 at 7:00 PM
    #7
    george3

    george3 [OP] Well-Known Member

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    IMG_1751.jpg
     
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  8. Aug 12, 2023 at 7:02 PM
    #8
    george3

    george3 [OP] Well-Known Member

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    IMG_1750.jpg
     
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  9. Aug 12, 2023 at 7:11 PM
    #9
    3JOH22A

    3JOH22A トヨタ純正男娼

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    Looks like rust has been eating away at the shoulder joint for a while:

    upload_2023-8-12_22-9-26.png

    Anyway, the rotor was worn well past its replacement thickness, as evidenced by the large step at the edge of the swept area:

    upload_2023-8-12_22-10-48.png
     
    tcjacado likes this.
  10. Aug 12, 2023 at 7:23 PM
    #10
    george3

    george3 [OP] Well-Known Member

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    Interesting - guess I should do rotors when I do pads - there was plenty of meat on the pads. How did you do the arrow ? Thanks for the reply.
     
  11. Aug 12, 2023 at 7:35 PM
    #11
    3JOH22A

    3JOH22A トヨタ純正男娼

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    ^With OEM pads and OEM rotors, usually the pads wear out well before the rotor does. As a result, the service manual is quite restrictive in allowable rotor wear. New rotor thickness is 28mm, while the minimum serviceable thickness is 26mm - so only 1mm of wear per side.

    The image cropping and arrows are done with an external program, IrfanView in my case.
     
  12. Aug 12, 2023 at 7:49 PM
    #12
    2015WhiteOR

    2015WhiteOR Well-Known Member

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    Probably not helped by New Jesery winters
     
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  13. Aug 12, 2023 at 7:51 PM
    #13
    george3

    george3 [OP] Well-Known Member

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    U R Very Welcome Sir.
     
  14. Aug 12, 2023 at 7:54 PM
    #14
    george3

    george3 [OP] Well-Known Member

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    Scary how much rust we get. Some people buy used trucks from TX and bring them back to NJ - No rust in TX.
     
  15. Aug 12, 2023 at 7:56 PM
    #15
    george3

    george3 [OP] Well-Known Member

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    That's very interesting - I've never measure rotor thickness but I'll have to from now on. Thanks.
     
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  16. Aug 12, 2023 at 8:01 PM
    #16
    3JOH22A

    3JOH22A トヨタ純正男娼

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    ^You'll need a micrometer that can get around the wear ridge on the outer rim of the rotor, something like this: [​IMG]
     
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  17. Aug 12, 2023 at 8:02 PM
    #17
    george3

    george3 [OP] Well-Known Member

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    Thanks for the IrfanView link - I'll have to get my 9 year old grandson to walk me thru it - that usually works for me. Appreciate it.
     
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  18. Aug 12, 2023 at 8:06 PM
    #18
    george3

    george3 [OP] Well-Known Member

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    Thanks - I go to Harbor Freight all the time especially when there's a freebee .
     
  19. Aug 12, 2023 at 8:36 PM
    #19
    dtaco10

    dtaco10 Well-Known Member

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    If the rotors look like that I wonder what the frame looks like. Never seen that happen, but I have seen the pads separate from the metal backing plate because of rust.
     
  20. Aug 12, 2023 at 8:42 PM
    #20
    Waasheem

    Waasheem The catholic radio bear

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    Bizarre. Guessing they weren’t oem rotors?

    I’ve seen the just rolled in YouTube videos where people wore the pads completely away and grinded the calipers into the rotors so badly you could see the rotors internal vents. But never a rotor failed like that.
     

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