Ok. So I've been told the rails on my 933f will interchange with a d4-7u. I've located a parts machine that the owner says is a 60's model d4 7u but I think that series stopped in 1959? There were no pictures of the rails but I have a picture of the tracks. Any to tell if they'll fit my machine? I know it's a long shot but the parts machine is 5 hours away.  Thanks   
 

Since loaders have longer track frames, my guess is you will need more links than a D4 dozer has. In the old days adding a new link or 2 was done, but I don't know if you can get new links today.

Others may disagree but the most important part of the track in my opinion is the condition of the pins and bushings, then the rail height and last the condition of track shoes. The interlineal wear is the hardest determine from just looking. I have a very good looking set of tracks but with internal wear if turning on a slope they start pop in as they try walking off the rollers. I have another set the rails are about 100% warn out, but someone put new pins and bushing in them and they never try coming off.

Thanks for the information. The pins on the left has worn through the bushings. I was contemplating replacing them but after hearing how dangerous it is to do myself or expensive to be done in the shop, I've decided to try to find replacement rail at least for the one side.

Here's a good looking 933
,www.facebook.com/marketplace/item/443175...85-b09f-f4814ab18169

Another for parts,
www.facebook.com/marketplace/item/231963...85-b09f-f4814ab18169

Another,
www.facebook.com/marketplace/item/431860...85-b09f-f4814ab18169

Thank you Rome! I was stuffing myself with turkey and not looking!