John,
Unfortunately, I've had more than one experience with the Cat CTL's. The first machine we had which was roughly 2 yrs ago, we were losing tracks almost once a day. Tracks came off both forward and backwards, but more moving forward. I would like to say it was all on slopes, but twice it was on flat ground. The last time with that machine it came off, I was raking trees and a cottonwood limb approx 6 inches in diameter slipped between the tracks and frame and popped the track off. This was in the dead of winter and I had the window open to specifically hear the telltale pop. What is ironic is this is when I was first hearing from Cat mechanics that the story I was hearing from Cat sales and such was not the same as what the mechanics were saying. When I first lost the track, talked to mechanic, told him the situation, it being a CTL, he laughed and said get used to it...this was a lot different from the sales division. After the last time it came off on flat ground, the machine was returned and I traded for another MTL. Fast forward a year later, MTL's had had issues on parts breaking (this is in a different area of the US with a dealer that was really unfamiliar with tracked skid steers). Regional Cat Rep insisted that there had been fixes and our first CTL had not been retrofitted correctly.....local dealer really was in it for the education part because they were not buying what they were hearing....so they sent out a CTL that had the double idlers and some guide modifications (which I'm not sure what they were). Track came off in the first hour on about a 5% slope, going down on a haul trail to a landing area. Local service rep came out, messed with it for about an hour and said to heck with it and had a service truck come out to follow me around. Next day, with the service truck in tow, the track came off either 2 or 3 times in a 4 hour period. Here is the explanation from the mechanic - with weight on the front of the skid steer (had a bullhog attached....which would be considerably less weight than a loaded bucket), the track wants to gap even when it was tightened to the full extent, way beyond recommended. That gap caused the derailing, not the terrain or bullhog. This test was done on roughly 5% slope....if you were turning and happened to catch any debris on the ground, the derailment was almost immediate. This has been over year ago when there was some talk about a narrower track, triple idlers and such being tested.....mechanic said and I will agree with him, that still doesn't test for the slack in the track and since I haven't heard of anyone using the narrower track and triple idlers being a home run, I'm thinking he was right.
I will also have to say I'm a firm believer, although it is not applied, all manufacturers no matter what color they are, to require their designers and engineers to be operators and mechanics first then be designers. Unfortunately, and Cat is not alone, the practicality of some of the designs is nil. Construction equipment is not alone, spent years welding, torching, modifying agricultural stuff too. The good ole days when they spent years in the field testing is long gone and we the customers are the guinea pigs. I do understand that new things means things are going to break...but the undercarriage issues have been so expensive and like the derailing, these are things I would have thought would be picked up during initial testing.
On a side note, I did rent and run a Bobcat T320 on the same terrain...partially to prove that I wasn't insane. About 80-100 hours were put on this machine with no loss of tracks. Not advocating purchasing Bobcat, just that with proper design you can have the tracks actually stay on......this is where I've gone on and on about how they have dropped the ball on the CTL's.
I don't spend near enough time studying them, but someone on the post here said they thought JD and Cat had the same undercarriage. If that is true, that explains a lot. Had many many hours in a JD 322 and 332 and them there tracks had the same issues.
Unfortunately, as far as a resale value on MTL's, at least from what they said on trade ins....Cat severely depreciated the machine because of the track system. Obviously another topic, but a point adding fuel to the flames (sell me a machine to do an application, fails miserably and then slam me on a trade in = one irritated customer).