Those that do your own wrenching...

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by nikmirbre, Sep 7, 2020.

  1. xsetra

    xsetra Road Train Member

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    When I was a new mechanic on my truck. I didn't know those anchor pins came out.
    I had an older trailer that those were rusted solid. I asked a parts house clerk about it. He said I had to change the whole "spider assembly" ( I think that was the name).
    I didn't like the price. So every 3 months I would weld on the pin adding circumference, then grind smooth so the brakes would work ok.
    Man what a face palm I did when I found out the truth.
     
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  3. nikmirbre

    nikmirbre Road Train Member

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    The shell just came off
     
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  4. nikmirbre

    nikmirbre Road Train Member

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    There a portable torch I can pick up somewhere?
     
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  5. xsetra

    xsetra Road Train Member

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    Search for:
    Acetylene torch.
    I was told a Cheaper gas to use is LPG. Just need a different tip. Doesn't burn as hot, still cuts.
    I was told LPG is what railroad crash dismantlers use.
    I think last time I filled my tank was 5 years ago. I don't use it much anymore.
     
    Last edited: Sep 11, 2020
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  6. tommymonza

    tommymonza Road Train Member

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    A decent single gas torch like propane but buy Map gas instead will work to heat as much as you want.
     
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  7. Dino soar

    Dino soar Road Train Member

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    If you have a big air gun there's a tool that you can use to drive those anchor pins out.

    But you need a big air gun like a 3/4 or a 1in gun.

    I think it's called a ball joint press or ball joint removal tool. I used it when I did all of mine and they were completely seized up in there.

    AutoZone will loan you that tool.
     
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  8. BoxCarKidd

    BoxCarKidd Road Train Member

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    It is bendable and then you bought it.
     
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  9. BoxCarKidd

    BoxCarKidd Road Train Member

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    That works but I usually start with a 4 Lb hammer beating on the spider 90 degrees to the end of the pin.
    It tends to expand the spider around the pin and bushing. You really have to be aggressive. Then I use a 7/8 hex shaft for a punch the is about 2 or 3 feet long to drive the pin out. More work on the spider if needed. If expanded be sure to dress the sides of the spider so the shoe slips over it.
    If you heat the spider and beat on the end of the pin it is possible to bend the spider and the shoe will be out of alignment.
     
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  10. Dino soar

    Dino soar Road Train Member

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    I don't know what that means but mine were seized up in there probably as bad or worse than anyone else's.

    My big air gun hammered them right out not only on my truck but my trailer also. 10 brake jobs where the previous owner never ever ever ever changed those pins.

    They were in there so long the brake shoes wore deep grooves in them.

    The photo is the tool. It's very heavy duty.

    image_26682.jpg
     
  11. BoxCarKidd

    BoxCarKidd Road Train Member

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    I have had worked with some special people. They can tear up most anything. Yes those normally work well with common since.
     
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