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Columbia Basin, Ephrata, WA | How do you go about fixing a broken track pin?
It's a small excavator and still sitting on the track, in not too bad if a spot, so could be worse. I just have no experience at all with tracks.
Do I just call a dealer or fix it myself? If the latter, how?
It's a Kobelco SK60 LC mark 4, North American sold machine.
Edited by Big Ben 10/30/2014 16:48
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| the idler on the front should retract so you can put the pin in and retract and then when your done just thighten the idler
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NESD | Pins are pressed in and out so you are going to need a dealer that has a portable pin press to get it back together. |
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owego ny | Pull track together with come along with out a pin press you will have to heat both sides of link and drive in with sledge hammer pin press is a lot earlier but can be done |
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Nashville, IL | Freeze the pin for 12 hours in a deep freezer, heat the links with a torch. Will almost slide right in. Unless it's a LGP track, then don't heat it as you will burn the o-rings. |
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So. IL | It's not that hard. Go to the dealer and get a new master pin. They are slightly undersized and go in easier, and then weld it in when done. First thing you want to do is locate the track tension cylinder rod and clean it up good, loosen the grease fitting that uses for track adjustment, and push the cylinder rod back in with the bucket. Don't over look the cleaning part, if you shove a rod covered with crap, then you run a major risk of tearing up the seals, then you will be rebuilding the cylinder as well. |
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East Central Iowa | Here's what I would do. Loosen the track adjuster valve to let the grease out so the idler can compress. You will probably have to force it in with the machine or use a very large come-a-long and it will compress as you pull the track chain back together. Swing the machine to make as much room as you can over the area your going to work on reinstalling the pin. Remove the track pads one or two on each side of the link that's separated. Next make sure the link pin bores are not messed up. They need to be in really good shape or this will happen again. If the links are good, get a new standard pin and the washers/seals on each side that go inside the links once installed. Now, either have the dealer come out at this point and press the new pin in OR heat and beat the pin in yourself.
If you discover that the link bores are bad and won't hold a new pin you have one of 2 options. Get another master link and install that into the chain (which is okay to do) OR if your chains are stretched to the max, remove a link and use that pin to reconnect .
If you decide to add another master link, you have to remove another pin to install the master, then install the new master pin to make the final connection of the chain. However, the kobelco master pins aren't a very tight press fit. Most the time you can tap them in. They have a retainer to hold them once installed, unlike the rest of the pins.
The master pin itself cannot be used in a standard link. However, if you do install it in a standard link you can get it back together faster/easier and up on good ground where you can take it back apart and work on it better. :)
Your local dealer will have no problem with any of this repair. I have walked onto jobsites with this very same situation. What I wrote above is a pretty general overview of what I would do, except I have a pin press, crane & torch. So the options are wide open. This might be tough without decent tools. A torch and sledge hammer will be a must if you want to get anything accomplished without a press.
Hope this helps shed some light on the situation. |
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West Tennessee | You've gotten good advice so far. Personally I would NOT call a dealer for that repair but you may have a different situation. "Here" that service call would be well over $2 grand plus parts. If you have a Heavyquip dealer anywhere close they will know what you need and can basically tell you how to do it. If the pin is loose when installed just weld it in. We have several on our machine like that. We've got about 4,800 hours on our tracks and we're hoping to stretch around another 1,000 hours out of them. Good luck to you. |
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Broke a track pin on my excavator. Now what?
