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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

So, how do you split tracks anyway?

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Randy Howard

08-23-2006 21:14:42




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Hi all,

I am restoring an Allis Chalmers HD4 for short but serious use around my property. So far I am knee-deep in the usual repair stuff, hoses, filters, radiator leak and general maintenance of a neglected unit that isn't all that easy to work on. Seems Allis bolted things on without a whole lot of thought to anything ever needing attention again. Anyway, the links are stretched but rollers and bottom seem in fair shape. I want to remove a link and shorten the tracks so I can get them adjusted up as presently they are a bit slack and I am out of adjustment room.

So how do I break the links to remove one? I have read lots of talk on this but no one has actually said what is involved. I have an oxy torch and facilities to turn driver pins etc. and if necessary can fabricate a hydraulic C frame to push the pins out. What exactly is the recommended procedure?

Thanks,
Randy

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bcPA

08-25-2006 05:14:39




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 Re: So, how do you split tracks anyway? in reply to Randy Howard, 08-23-2006 21:14:42  
I agree with george. Instead I would add a bead of weld to thetop of each chain link. I E the part that runs against the bottom rollers and the front idler. This will tighten the track up and remove the excess slack. I dont think it will harm anything. I would remove the ground cable to your batteries to protect the electrical systym. Check your sprockets for wear. Do they come to a poinf and are the sides of the teeth square or do they taper inward. new ones are square sided and dont come to a point on top. Adding some weld will give you some more time on a set of throwaway tracks. What you dont want to do is ruin a good set that you can catch in time to turn the pins and bushings. If they are beyond saving then I would do the temporary get by weld up fix. good luck.

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george md

08-24-2006 10:16:34




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 Re: So, how do you split tracks anyway? in reply to Randy Howard, 08-23-2006 21:14:42  
Randy,

In 99 out of 100 if you need to remove a link to get adjustment , what you really need is a set of pins and bushings . By the time you are out of adjustment the pitch length will have grown to the point that the tracks no longer fit the sprockets and will climb the teeth .

george



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Randy Howard

08-24-2006 13:19:14




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 Re: So, how do you split tracks anyway? in reply to george md, 08-24-2006 10:16:34  
You may be right George as that would make sense. Funny thing is though, the sprockets show very little wear and the bushings are still round. So I don't understand exactly what is going on. All I know for sure is that I am all out of track adjustment and think for a quick fix I need to shorten them a bit.

Randy



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CH

08-27-2006 06:31:57




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 Re: So, how do you split tracks anyway? in reply to Randy Howard, 08-24-2006 13:19:14  
First of all what does a round feeling bushing have to do with chain stretch? That is internal wear and the only way to get that is measure If you send me an email i will send you my link and it has a chart on it and explains how to measure. Can't go by spockets first thing people do is put new spockets on worn out chains and think they fixed the problem.



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D6 9U

08-24-2006 08:30:20




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 Re: So, how do you split tracks anyway? in reply to Randy Howard, 08-23-2006 21:14:42  
When I changed tracks the old one was wore enough that I loosed the tightner as far as it would go, then jacked it up and took it off like a rubber band..but when you shorten the tracks you will have to use the master pin to get it back together. Take if off and take it to a shop and they can push the master take out a link and you can go home and put it on. The cheapest way is to use the torch after you get the master pin out, dont ruin the master pin. Take you time and you will be alright.

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ajk

08-24-2006 02:28:08




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 Re: So, how do you split tracks anyway? in reply to Randy Howard, 08-23-2006 21:14:42  
Each track has a master link,that means that one link has a shorter bush than the rest and a pin that can be remove,the master pin should have a hole or dimple in the centre to help identify it,remove the master pin,you may need to heat the eyes of the links and you will need a suitable drift to knock it out with a big sledge hammer,when the track is split take the pad off the female link,cut the centre of the bush and pin out,blow a hole through the remaining bits of the pin be careful not to cut the link eyes,remove the links,clean the holes in the eyes and rejoin the track not forgetting the dust seals on the master pin,done a rough sketch of what to do at the link below.
Good Luck
AJ

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CharleyFarmall

08-24-2006 06:09:31




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 Re: So, how do you split tracks anyway? in reply to ajk, 08-24-2006 02:28:08  
I looked at the picture and want to make sure I get this. Cut the center of the bush and pin out leaving 4 separate pieces? What do you mean blow a hole through the center - flame cut an axial hole? I assume the pins are too hard to drill or bore...?



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