Based on the positioning of the idlers, the undercarriage may not be very worn. Best thing you can do is measure the undercarriage to know for sure. If you can start with the rail height, measure from the "underside" of the track pads down to the top of the rails (the chains that the pads are bolted to). Use a ruler to get the level across the rails and measure in a couple of different places to get an average. If you can also look at the pin bosses on each link to see if they've been pounded by the rim of the rollers, that is a rough swag at the wear too. Ideal is that the rims do not hit the pin bosses. There's a tool to measure the wear on teh idlers, rollers, and sprocket teeth as well as the rails and grousers

Hiranger wrote:

I’m glad the link to the Cat D2 page was included in one of the answers, thank you. However, I can’t seem to find it from either the home page or the forums page. Am I looking for the “machines page” in the wrong spot? I’d like to explore what other models are listed?
Hi Justin, To access the "Machines" pages just click on the "Machines" yellow button at the top right hand side of he Forum page (see below). It's also on the "About" page (see below).
Currently there are pages for the D2, R2, FIFTY, SEVENTY and 212 Grader. More are in preparation (This new feature is only a few weeks old!). If there are specific machine pages that you are interested in just let me know and I will try and create them sooner rather than later.