Jimny brakes





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Thread: Jimny brakes

  1. #1
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    Default Jimny brakes

    Hi -

    I noticed something funny with the contact area of the brakes on the disks of both the front wheels of my 2009 Jimny.

    On other Jimnys the entire rim of the disk is "clean" from braking, while mine only makes a narrow line. This worries me. I had the car in for service (not at Suzuki) and the mechanic said the brake pads isn't the problem but that he doesn't want to start taking the wheel apart. For that I should rather go to Suzuki.

    Before I do that, if anone has some ideas on what the problem could be that would be greatly appreciated.
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  2. #2
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    Quote Originally Posted by andrewbuch View Post
    That does not look good at all.

    I would start with a new set of pads
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  4. #4
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    is your mechanic interested in own business.
    go to another one.skim discs and fit ferodo pads.

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    Quote Originally Posted by NileKrokodile View Post
    the mechanic said the brake pads isn't the problem but that he doesn't want to start taking the wheel apart
    Looks like you need a new mechanic! The Jimny has about the most simple braking system available, anyone can work on it.

    Those discs need to be skimmed, or more likely replaced.
    The brake pads will have to be replaced.
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    Agreed! Fire mechanic...

    I'd have the discs skimmed and also recommend a set of Ferodo pads

    A mech that sees that kind of problem and then responds with "rather have it done at agents" is a dangerous mech. What else is there on the vehicle that he also "can't do / didn't see"?

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    Would that be the reason for the shudder on the stearing wheel sometimes when I break normally?

    Garrie
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    Quote Originally Posted by Miems View Post
    Would that be the reason for the shudder on the stearing wheel sometimes when I break normally?
    Warped brake discs.
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  9. #9
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    Thanks for all the comments, DULY noted...

    I'll have this checked out properly and post here if anything interesting arises.

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    Quote Originally Posted by NileKrokodile View Post
    Thanks for all the comments, DULY noted...

    I'll have this checked out properly and post here if anything interesting arises.
    Out of interest, is the shiny part higher, or lower than the rusted part? IAW, is the shiny part "grooved" out, or raised. And is the whole area of the friction pad still present or are there parts missing. Then is this visible on both sides of the disc or only the outside? Funny to see this on BOTH discs as this would mean the problem is similar, thus make me thing the cause is from original engineering, not from use.
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  11. #11
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    i don't see how shiny part can be raised.do you have an theory?

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    I also don't see how the shiny part could be raised higher than the rusted parts, as the shiny parts is where contact is being made.

  13. #13
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    If the disc surface was machined convex and not flat, it will be raised in the middle. As it wears the contact band will expand in width.
    Cobus
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  14. #14
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    jab that would be most unlikely,unless it's done on purpose,by intoxicated machinist.

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    Quote Originally Posted by Nox View Post
    Warped brake discs.
    Excuse if this is a silly question, but how does this happen?

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  16. #16
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    for a 2009 model car you have more corrosion and crap than i have seen on 20 year old cars
    no wonder your mechanic tells you take it elsewhere
    bolts and such will probably shear off or round off and cause bigger headaches
    also from the looks of that brake and part of the rim - your car needs a lot of tlc
    i would be more trusting actually of a mechanic that admits its out of his league than someone taking on too much
    i think theres way way way more to this story than meets the eye
    how long have you had the car ?

  17. #17
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    Quote Originally Posted by jadranko View Post
    jab that would be most unlikely,unless it's done on purpose,by intoxicated machinist.
    But then we are looking at a most unlikely wear pattern, don't we, so thinking outside the box is needed.
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    Quote Originally Posted by Miems View Post
    Excuse if this is a silly question, but how does this happen?
    Well it can be caused by a few things apparently but none that I'm entirely convinced of. This is going by what I hear at brake shops or have read.

    Improper brake wear in at the beginning.
    Exessive heat from braking and then going through a puddle of water or excessive heat from a lot of braking and keeping your foot on the brake for a long period has been said to cause parts of the disc to become harder, thus causing a uneven surface.
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  19. #19
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    Mmmmm, ok I don't drive on my brakes. I gear down and brake. Seeing that I got my car in winter I cannot see the driving through water bit a viable option. It just does not make sense to me. This is my first car ever that has doen this, and I've driven a few up to now. From very old to brand spanking new.

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  20. #20
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    Yeah I dont know but so far mine isn't doing it yet but I've had a VW and an Opel that needed to get discs skimmed.
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