Anchor pin bushing removal

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Dino soar, Aug 26, 2018.

  1. Dino soar

    Dino soar Road Train Member

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    I need to get the anchor pin bushings out to put the brakes on.

    Usually I make a puller with a couple sockets and and a bolt for bushings in general.

    Questions

    1) how do you guys normally Drive or press them out? If it is best to use the tool I can purchase it. If so, which one do you prefer?

    2) is it okay to heat around that bushing to make driving it out easier?
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    Any plain ol ball joint press will do the job. Run her tight with the impact and smack the screw with a sledge and it'll pop little bit at a time if they are really frozen. If not stuck too bad they may come right out. Only problem with this tool is if the sleeve comes out with the pin it wont fit through the hole in the press causing more troubles. If your a one timer or dont do many this is the tool for you.

    Top dog is the Snap on anchor pin press. Doesnt flex, itll take a 3/4 impact and the pin and bushing fit through the hole, but get your wallet out.

    I think Tiger Tool makes one middle of the road but haven't had the pleasure of test driving yet.

    Course before I grab the press I usually just see if they will come out with a good air hammer. CP717 is my favorite flavor, but again expensive.

    I get torches out only as a last resort and not very often do I need them for a brake job.
     
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  4. spsauerland

    spsauerland Road Train Member

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    Can't remember the tool maker but there is one making a nice set for an air hammer that I have that has held up well. I have a Lisle bushing remover/installer set that has seen the welder many a times, but would work fine for the occasional brake job that has air hammer attachment. Also have the Snap-on press and it works great too for the pins and bushings and clears all hubs.
     
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  5. Dino soar

    Dino soar Road Train Member

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    I tried the ball joint Puller but maybe the set that I have doesn't have the right attachments I can't seem to press them out squarely.

    I had to rig it up with some of my own sockets and at least I could move the bushing out far enough that I could do hammer and chisel work to get it out. Four more to go.

    Unless I find some kind of shortcut I will never do this again without the right tool. It takes too long and it is too much work.

    Can I drive these bushings in with just a block of wood or a socket and a hammer? Do I need the actual tool?

    Do you put anything on them or do they go in completely dry?

    Thanks again for the help.
     
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  6. Goodysnap

    Goodysnap Road Train Member

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    Weld a large flat washer to a new anchor pin, makes a perfect driver for bushing installation. Antisieze on the new pin and where the rollers meet the shoes on both ends.

    They get super stubborn because usually no one changes them during brake job. If you change them every brake reline they come out like butter.
     
  7. AModelCat

    AModelCat Road Train Member

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    PITA ones I just blow a hole straight through the middle with a torch. Usually that does the trick.
     
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  8. Goodysnap

    Goodysnap Road Train Member

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    To add..... a 1 inch flapper wheel on a 90 cleans up the bore so the bushing fits good. If you drive the bushing into a rust filled hole, the pin will go in tight and you'll have it all to do over again. The goal is to push the pin in the bushing with your fingers with no slop.
     
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  9. Dino soar

    Dino soar Road Train Member

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    Thanks @Goodysnap. Everything that you have said makes complete sense. Will do.

    Thanks @AModelCat. I think the last four I will cut them out with the torch. That should speed things up a bit.

    Last question for today.

    When I put the Yoke seals on and the wheel seals, can I use a block of wood or a piece of pipe or socket that's the same size as the top of the Seal?

    I think the actual tool that they sell for that drives it from the bottom of the seal the part that seats down into the Hub. I just want to make sure I don't damage them.

    They are all unitized seals.
     
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  10. Goodysnap

    Goodysnap Road Train Member

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    It's always best to use the proper seal driver if you can beg, steel or barrow one. Sucks messing up a new seal or worse having to take it back apart for a leak.What seal brand, type? Aluminum or steel hub? Some of the unitized seals you can push in by hand with small amount of lube.
     
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  11. Dino soar

    Dino soar Road Train Member

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    I'll have to check those seals when I get down to the garage.

    I'll touch base with you tomorrow.
     
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