Thread: Class ares 567 atz transmission problem

From experience here (with a different flavour of tractor, not all in same tractor); the 3rd one seems most likely

1. had a front diff partially go in one, would go in 4wd but would "slip" when doing certain things (shit your pants material pulling a feed wagon around in the wet)
2. as has been said before, dual switch for 'auto" 4wd, may apply for reverse but usually at a certain speed. Not sure about Claas but Fergusson have either a rocker type momentary switch to hold down or, in the more modern ones, two different buttons on the B pillar for auto or constant 4wd
3. back end oil, when you go nose down, oil runs to the front and can't be picked up by the pump. In quite a few of those tractors, oil flow is needed to keep the tractor in 4wd rather than just the change. This has caught me out a few times driving down a slope to retrieve something and then not being able to reverse out. It is probably worse if using oil flow for something else. I have found it helps to keep the back end over filled (on the dipstick) to avoid this.

As a side note for those saying get a JD, I think a lot of Claas tractors used JD engines