Hi All,i have a few issues with my recent dozer buy(i am still trying to sort the decelerator not working problem as discussed here),the underside of my tracks are wearing metal to metal in the area shown in the pic so are keen to sort it out.I know the undercarriage needs rebuilding when i can afford it but for now would like to replace the parts needed to stop so much wear.I am still learning about the dozer and i know it will be obvious to the experienced here so any help is appreciated,thanks.

That's normal when the tracks are well worn and they sink deeper into the sprockets due to bush and sprocket wear, you need to get the tracks measured up for the wear that has taken place to decide what to do next. Should a bush turn be possible, it will give a little clearance at that point, and if the rest of the U/C has life left, it will help extend the life of the system.

There are guages available to measure the various undercarriage components, however, it would likely be worth your while to call the dealership and have them inspect it. Here in the USA most dealers will come around and measure your u/c components at no cost, based on the idea that they want to sell you some parts. For the internal wear of the track chain bushings, dealer service techs use an ultrasonic measuring device, which is considerably easier and more accurate than other methods.

Thanks,

Stewart

Thanks catsilver and Snowycountryfarmer for the info,i will call my Cat dealer to see if they can check it out,the left side seems to be wearing more than the right side.I got the dozer at a reasonable price and was aware that the under carriage was well worn,i will get some advice from them to find the cheapest fix until i can afford a rebuild.The undercarriage must be well worn as i have'nt seen any tracks that worn on the net.When i first got the dozer,i took it for a drive and it went well and after found a curved metal shaving on the ground and confused where it come from until i noticed so a lot of wear on the underside of the tracks.I plan to restore it to its former glory and make it work so its a worthwhile investment,thanks again for the help.

Adjust your tracks up a bit and see what happens. Looking at your other pictures the track may be hitting the front rock guards. If you would post some pictures of the idlers .
Bob

Off subject but do you know what the rear trunion ball was for? They must have pulled something from them.

That is caused by low rail height and bottom rollers wore out. Also check the top of the final drive cases, the tracks will wear into the case from constant rubbing from the tracks. Also worn rollers and worn out pins and bushings [bushes] will cause "snaky" rails and cause excessive side wear on rollers and track guides and pin bosses. Best for now to replace bottom rollers and then get new rails and sprocket segments. Yes its expensive to replace these parts but almost everyone that gets and wants a large tractor just wants to run it to death, "do there job" and then sell it, well you have to put money in them to get the work out of them too.

"bluox" wrote:

Adjust your tracks up a bit and see what happens. Looking at your other pictures the track may be hitting the front rock guards. If you would post some pictures of the idlers .
Bob

Yes, adjust to get proper tension. If too sloppy, the pads can also hit the top of your final drive housing and scrape the top of it off along with some of the bolts.

"catsilver" wrote:

That's normal when the tracks are well worn and they sink deeper into the sprockets due to bush and sprocket wear, you need to get the tracks measured up for the wear that has taken place to decide what to do next. Should a bush turn be possible, it will give a little clearance at that point, and if the rest of the U/C has life left, it will help extend the life of the system.

Pins and bushings [bushes] has nothing to do with that type of wear going on there. The sprocket should NEVER be sitting down on the bushings when sitting on level ground.

It is not the best picture in the world but I don't see any flat spots on the pin bosses and the rails seem to have good meat on them. A stretched track rides higher in the sprocket under load. I am suspecting a failed final bearing. Is there any oil in your left final?