I know this question has alot of variables but I run my 6R in about every kind of soil there is and I had my undercarriage inspected a few days ago. I have not got my report back yet but they told me the specs. 46% wore on bushings, 12% to 19% wore on rails, pads at 6% wore, front idlers were 31% and the rear were like 19% (cat replaced the rear idlers at about 1000 hrs due to that they were out of round), and I cant remember what the rollers were. This machine had 3411 hrs on it when it was measured.
The tech told me I should get around 7000 hrs on the U/C if I decide to turn the bushings when they reach 80% wore.
The tech told me I should get around 7000 hrs on the U/C if I decide to turn the bushings when they reach 80% wore.