Question about Chevrolet Blazer

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How to change a leaf psring mount - Blazer Chevrolet Cars & Trucks

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  • joemfd Sep 13, 2010

    BOTTOM BOLT WONT MOVE OF COME OUT THE ONE THAT GOES THRU THE BUSHING EVEN WITH A IMPACT GUN

  • joemfd Sep 13, 2010

    IT ALMOST SEEMS LIKE THE BOLT IS FUSED TO THE BUSHING

  • joemfd Sep 13, 2010

    WILL HEATING THE CURVE OF THE LEAF SPRING HELP AT ALL?

  • joemfd Sep 13, 2010

    CANT REMOVE BOLTS OR BUSHING BOLT WONT EVEN TURN WITH A IMPACT GUN

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  • Chevrolet Master
  • 2,019 Answers

Leave springs are held in with shackles in the front and rear, that is because the length of the spring increases and decreases with up and down movement, so the mount has to move back and forth.
To absorb vibration and sound, there is also a rubber bushing between metal bushings, on either end. Normally you just remove the spring by undoing the nut and pullingn out the shackle bolt. Some times the bolt will get stuck in the inner bushing. Sometimes you can twist it with a channel lock pliers. Other times it is easier to drive it out with a drift. If the inner metal bushing is really rusted to the bolt, sometimes you have to cut it out with a torch. Grease the bolt when you put it back together, to reduce future rust binding problems.

Posted on Sep 14, 2010

  • Kirk Augustin
    Kirk Augustin Sep 14, 2010

    Heating the leave spring itself will not help at all, since the bushing fused to the bolt is isolated from the spring by another larger bushing and the rubber between.
    All heating the spring would do is potentially weaken the spring.
    If you can't use a torch to just cut the bolt off, then cut both ends off with a hack saw. Tedious because it is a hardened bolt, but it does torch off very easily. This is identical to a frozen shock absorber bolt, except in the case of a shock, you don't mind cutting the outer bushing, which is part of the shock itself. But once you burn the rubber out, you may be able to heat or drive the inner bushing out more easily. And remember to grease the new bolt.

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  • Master
  • 3,489 Answers

This shouldn't require any special tools or procedures. You will have to raise the vehicle just enough to release all tension and just so the tire just touches the concrete. Take your wrenches and remove the bolts. You may have to soak these down with WD-40 or another good rust penetrant to ease the removal. Let me know if you need anything else. I have diagrams and instructions but this should be sufficient.

Posted on Sep 13, 2010

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