I changed the track on a Cat 287B tracked loader today and have to say that the ASV under carraige is junk here in the mud we have in south Louisiana , it is a good machine on pavement , but why have tracks on pavement as they last about 500 hours on high percentage of pavement use and they cost right at $5000 per set at dealer , that's $10 every hour it runs not counting idle time which makes it even worst , the tracking system doesn't work in the wet mud slop , it seems the mud dries up around the rollers and binds them up which eats the rubber off the rollers , seems you would have to pressure wash the undercarrage every couple of days as it turns to concrete around the rollers , the rollers turned fine once the dirt was cleaned out , and it is pretty hard to change a track on a 287 , it took over 2 hours to do one with 2 people and a machine where I can do 2 T-300 tracks in about an hour and 20 minutes by myself if I have an excavtor or skidsteer there , just some thoughts on the Cat the tracks cost alot , hard to change and don't last , it's a snow mobile with a bucket on it