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Discuss trouble with spider gear removal in the alt.autos.gm forum at Car Dealer Forums; Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt that holds ...
  1. #1
    blaze2@winco.net
    Guest

    Default trouble with spider gear removal

    Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt
    that holds the pin in place is shirred off. Pin will slide up and down
    slightly and will turn all the way around but I still can't get the pin
    out. I have tried hitting it to get it out but it will not come. Any
    suggestions will be greatly appreciated at this point. I have never
    attempted this before and am wondering if I am going to be sorry.
    Thanks for the info.


  2. #2
    Big Al
    Guest

    Default Re: trouble with spider gear removal


    <blaze2@winco.net> wrote in message
    news:1156385146.264455.112120@h48g2000cwc.googlegr oups.com...
    > Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt
    > that holds the pin in place is shirred off. Pin will slide up and down
    > slightly and will turn all the way around but I still can't get the pin
    > out. I have tried hitting it to get it out but it will not come. Any
    > suggestions will be greatly appreciated at this point. I have never
    > attempted this before and am wondering if I am going to be sorry.
    > Thanks for the info.
    >


    This usually happens when you spin one wheel ,like when in snow. One of the
    small gears "sticks" to the pin and twists off the bolt. Only thing you can
    do is hit the shaft from the opposite end. The end without a bolt. You are
    going to end up destroying the carrier, but there is no other way to get the
    axles out so you can remove the carrier. You need a piece of rod about the
    size of the pin and a big hammer. Don't swell the end of the pin or it will
    never come out. IE, don't bang on a socket or an extension. Find a rod with
    a flat end and a really big hammer. Hold the rod with a vice grip and not
    your fingers Hit it square and hard. You may need to disconnect one end of
    the shocks to get he rear low enough to get a good swing. By time you get
    done getting it apart and replacing parts, it may be a lot easier to replace
    the entire rear axle. Just be sure you get the same ratio as the original
    one or the four wheel drive will bind.

    Good luck.

    Al



  3. #3
    sdlomi2
    Guest

    Default Re: trouble with spider gear removal


    <blaze2@winco.net> wrote in message
    news:1156385146.264455.112120@h48g2000cwc.googlegr oups.com...
    > Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt
    > that holds the pin in place is shirred off. Pin will slide up and down
    > slightly and will turn all the way around but I still can't get the pin
    > out. I have tried hitting it to get it out but it will not come. Any
    > suggestions will be greatly appreciated at this point. I have never
    > attempted this before and am wondering if I am going to be sorry.
    > Thanks for the info.
    >

    Sometimes after the retaining bolt shears, it has little or no tension
    on the remaining piece of bolt still screwd into the pin. The tension is
    originally just under the head of the ret. bolt head and its mating surface,
    & when the bolt has sheared, it leaves the remaining piece of bolt almost
    'finger-loose'. In these cases, you may be able to use a sharp, small-ended
    punch & hammer and gently tap it counter-clockwise to screw it out
    gradually.
    Should this not work, I'd attempt a "dental-grinder" and dress the
    surface of the pin where the ret. bolt head originally hugs before
    attempting removal, so as not to cause further damage to the differential.
    As a last resort, you can do as Big Al suggested.
    Here's hopes you are among the lucky! I've had this work a few times!
    s



  4. #4
    Big Al
    Guest

    Default Re: trouble with spider gear removal


    "sdlomi2" <sdlomi2@spam.yahoo.com> wrote in message
    newszmHg.47$YC.18@newsfe02.lga...
    >
    > <blaze2@winco.net> wrote in message
    > news:1156385146.264455.112120@h48g2000cwc.googlegr oups.com...
    > > Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt
    > > that holds the pin in place is shirred off. Pin will slide up and down
    > > slightly and will turn all the way around but I still can't get the pin
    > > out. I have tried hitting it to get it out but it will not come. Any
    > > suggestions will be greatly appreciated at this point. I have never
    > > attempted this before and am wondering if I am going to be sorry.
    > > Thanks for the info.
    > >

    > Sometimes after the retaining bolt shears, it has little or no tension
    > on the remaining piece of bolt still screwd into the pin. The tension is
    > originally just under the head of the ret. bolt head and its mating

    surface,
    > & when the bolt has sheared, it leaves the remaining piece of bolt almost
    > 'finger-loose'. In these cases, you may be able to use a sharp,

    small-ended
    > punch & hammer and gently tap it counter-clockwise to screw it out
    > gradually.
    > Should this not work, I'd attempt a "dental-grinder" and dress the
    > surface of the pin where the ret. bolt head originally hugs before
    > attempting removal, so as not to cause further damage to the differential.
    > As a last resort, you can do as Big Al suggested.
    > Here's hopes you are among the lucky! I've had this work a few times!
    > s


    I've done a lot of these and it's usually the gear that's stuck to the shaft
    that's the problem. The bolt he's talking about has threads near the head,
    but the rest is just a pin. Here is a picture:
    http://www.motivegear.com/pages/inte...ernal_kits.htm

    And some drawings that will show the problem he's facing:
    http://www.powertrax.com/8221002a.pdf

    The bolt sheers when the pin twists. It's broke way in the carrier flush
    with the pin.

    Al



  5. #5
    blaze2@winco.net
    Guest

    Default Re: trouble with spider gear removal

    Thanks for the great pics and info. However the problem is still the
    same as it was before. We cannot get the pin or shaft whatever it is
    called to come out of the gear. The retaining bolt is not the problem.
    We have beat on it and beat on it and it will not slilde out. It moves
    a bit up and down, but that is all the farther it will go and we can't
    proceed any further obviously until the shaft is removed. We do not
    know what to try next. Really frustrated and can't get any info
    anywhere on what to try next. Help some more!
    Big Al wrote:
    > "sdlomi2" <sdlomi2@spam.yahoo.com> wrote in message
    > newszmHg.47$YC.18@newsfe02.lga...
    > >
    > > <blaze2@winco.net> wrote in message
    > > news:1156385146.264455.112120@h48g2000cwc.googlegr oups.com...
    > > > Help. Spider gears went out of my 2000 Blazer 4x4. The retaining bolt
    > > > that holds the pin in place is shirred off. Pin will slide up and down
    > > > slightly and will turn all the way around but I still can't get the pin
    > > > out. I have tried hitting it to get it out but it will not come. Any
    > > > suggestions will be greatly appreciated at this point. I have never
    > > > attempted this before and am wondering if I am going to be sorry.
    > > > Thanks for the info.
    > > >

    > > Sometimes after the retaining bolt shears, it has little or no tension
    > > on the remaining piece of bolt still screwd into the pin. The tension is
    > > originally just under the head of the ret. bolt head and its mating

    > surface,
    > > & when the bolt has sheared, it leaves the remaining piece of bolt almost
    > > 'finger-loose'. In these cases, you may be able to use a sharp,

    > small-ended
    > > punch & hammer and gently tap it counter-clockwise to screw it out
    > > gradually.
    > > Should this not work, I'd attempt a "dental-grinder" and dress the
    > > surface of the pin where the ret. bolt head originally hugs before
    > > attempting removal, so as not to cause further damage to the differential.
    > > As a last resort, you can do as Big Al suggested.
    > > Here's hopes you are among the lucky! I've had this work a few times!
    > > s

    >
    > I've done a lot of these and it's usually the gear that's stuck to the shaft
    > that's the problem. The bolt he's talking about has threads near the head,
    > but the rest is just a pin. Here is a picture:
    > http://www.motivegear.com/pages/inte...ernal_kits.htm
    >
    > And some drawings that will show the problem he's facing:
    > http://www.powertrax.com/8221002a.pdf
    >
    > The bolt sheers when the pin twists. It's broke way in the carrier flush
    > with the pin.
    >
    > Al



  6. #6
    Roy
    Guest

    Default Re: trouble with spider gear removal


    <blaze2@winco.net> wrote in message
    news:1156502721.207727.173060@h48g2000cwc.googlegr oups.com...
    > Thanks for the great pics and info. However the problem is still the
    > same as it was before. We cannot get the pin or shaft whatever it is
    > called to come out of the gear. The retaining bolt is not the problem.
    > We have beat on it and beat on it and it will not slilde out. It moves
    > a bit up and down, but that is all the farther it will go and we can't
    > proceed any further obviously until the shaft is removed. We do not
    > know what to try next. Really frustrated and can't get any info
    > anywhere on what to try next. Help some more!


    Not trying to be a smart ass, but get a bigger hammer or a bigger person to
    hit it. You really have to blast it out of there.

    Roy



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