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Pins and bushings

Discussion in 'Heavy Equipment & Pavement' started by Fieldman12, Jan 8, 2008.

  1. Fieldman12

    Fieldman12 LawnSite Bronze Member
    Messages: 1,504

    I'm replacing the pins and bushings in my 250 II skid steer where the bucket curls. How is the best way to get the bushings out? I know I can heat the surrounding surface and then beat the bushing out. The first one I have tried so far does not want to budge. Wondering if I could take the reciprocating saw and cut a small grove in the middle of bushing. I doubt it would work. I have seen some guys cut them with a torch. I know when putting them back in to let them set in the freezer overnight before beating them in.
  2. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Messages: 752

    Use a torch and cut a slot in em, then wack em out. To install, clean the bore with a flapper wheel, put new bushings in dry ice and press em in.
  3. Kepple Services

    Kepple Services LawnSite Senior Member
    Messages: 374

    I just use a socket to get them out on my T300. I have had some not take grease after a bit and had to replace the pins and sleeves. I used a socket that was the same diameter and used it as a drift to push it out. Works good to reinstall it also.
  4. ksss

    ksss LawnSite Fanatic
    Messages: 7,162

    I like the dry ice trick. I will have to file that one.
  5. Gravel Rat

    Gravel Rat LawnSite Fanatic
    Messages: 9,544

    You can try split them with a recip saw or you can take a welder and weld the inside of the bushing if its a steel bushing which causes it to shrink and you can drive the bushing out. To torch them out your going to have to be good and steady. Safest way is try cut it with a recip saw or a small abrasive wheel or air chisel.

    Good luck on which ever way you choose its going to be some hard work,skinned knuckles with lots of swearing :laugh:
  6. Fieldman12

    Fieldman12 LawnSite Bronze Member
    Messages: 1,504

    Well, I pulled one of the pins which was no big deal yesterday. As I figured the bushing is very hard metal. I ran a hack saw just across the surface and it did not even scratch it. :)
    Seems the majority of people I have talked to say the best way is to cut a groove down the center of bushing with a torch and then drive it out. I have had a few also tell me they have had success with driving them out with a socket. I thought about making some type of puller. I was thinking about taking several washers the diameter of the bushing, run a bolt through them and the cylinder and then come up with something on the other end where I could use the nut to help pull the old bushing out. The pins and bushings are not gone yet (maybe two more years) but I thought maybe this would be a good winter project. I was just worried that if I try to cut the bushing that maybe I would cut some of the other metal as well. I guess I would be okay though because once I got through the bushing it would have to heat up the other metal. I am just afraid that metal may be hot enough by the time I get through the bushing. I take it most of you guys trade yur machines off before you have to replace the pins and bushings?
  7. Scag48

    Scag48 LawnSite Fanatic
    Messages: 6,067

    While we're on the subject, anyone tried or own a slide sledge? I figure that would be a real good tool for getting pins out and saving your fingers.
  8. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Messages: 752

    After you've done 100's of em you get good with the torch. If ya nick it up a lil, no biggie. Worst one lately was a 300 Komatsu, new bucket pin and bushings, in the field. No press... really sucked! I've used the welding trick with stuck diesel engine cylinder liners.
  9. Gravel Rat

    Gravel Rat LawnSite Fanatic
    Messages: 9,544

    You can cut steel with a welder you just crank the heat up to the max and use a 1/8 rod or 3/32s. Trying to pull the bushings out won't really work.

    Once you got it split you can take a air chisel and working the bushing out.
  10. Fieldman12

    Fieldman12 LawnSite Bronze Member
    Messages: 1,504

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