Dozer question (steel track related)

[greywynd]

I found this listed on kijiji classifieds, seller says undercarriage is 85%, now, sometimes this isn't the brightest bulb in the box, but looking at the drive sprocket in the pic I think it's a lot more worn than that. Seeing as I work with rubber tracks mostly, I'm not always familiar with the steel tracks.

For the record, no affiliation with the seller, nor am i trying to promote it, just trying to educate myself.

Can someone enlighten me if I'm right or wrong?

http://toronto.kijiji.ca/c-buy-and-sell-tools-equipment-DOZER-FOR-SALE-AND-PARTS-FOR-SALE-W0QQAdIdZ8876375

Mark

[rino1494]

Looks good to me. Looks to be a nice tractor. I was kinda surprised at the price, but then I saw it was Canada. It is prolly a fair price.

[DigDug]

Sprocket looks good to me also. Might be 85%

[Wulf]

In my opinion sprocket wear is quite difficult to estimate accurately just visually. Cat and other manufacturers make a profile gauge that fits in the sprocket root to compare new with old and they have % marks on the gauge. Having saying that the sprocket looks OK to me and 85% is probably correct :wink2

One of the most important thing to check on segmented sprockets is to ensure that they are good and tight, are not welded to the hub and have never come loose to ensure that the sprocket hub is in good shape (no cracks or elongated holes)

If you were buying you would need to see a full report of internal wear, bushing wear and link height, roller condition etc. Ideally the machine would be running and operating so that you could do a hot pin check (to ensure there is still oil in the pins/bushings)

[Ford LT-9000]

That dozer looks like its in decent shape sure can tell it hasn't been in B.C. if that was being sold here and has been working here it would be allot more worn.

Thats not a bad price either those old D-8s sell for a good dollar seen some old D-8s at Ritchies go for 25-30 grand and they have pup motors so that means old.

Tough old machines I have seen worse some of them run on 4 cylinders the tracks sagging and things clanking and banging.

[greywynd]

Thanks guys, I learned a couple things. Never knew about the profile gauge that Wulf mentioned, and also a good reminder to ask someone knowledgeable with the particular machine in question to look at it if you aren't familiar with it. I'm guessing someday I'll be looking at a machine with steel tracks, and it never hurts to learn what and where we can along the way.

Mark

[digger242j]

Compare the photo of the sprocket on the machine in question to the one in KoO's post on The HOOD (http://www.heavyequipmentforums.com/Forum/showpost.php?p=21043&postcount=51).

(Both pics posted here, for simplicty.)

The HOOD's shows a little more wear. All the edges/corners are rounded somewhat, while on the other machine they have a somewhat more fresh, squared-off look. Too bad the contrast in the first pic isn't a little better--the washed-out color might not be showing the detail clearly enough to judge for sure.

[alan627b]

Something else to think about, a steam clean and Dupont overhaul can hide a lot of ills...if the hydraulics are in good shape, why do they have the blade propped up on blocks? Do they leak down? Ripper tractors also lead a hard life...lots of final drive wear...just stuff to think about...
alan627b

[DR RPM]

The cutting edge is broken in two spots, the center piece was probably from a rock, but the left side corner bit not sure how that would get bent up like that. To me it looks like a complete dupont rebuild.