I am having issues with the Scanias. I have a 4 series Bus (K124) Opticruise. These are 8 speed 4 Low / 4 High Range.
We are having an intermittent issue with banging into gear. This will only happen in the bottom 4 gears (low) Generally under light load or when going down a light grade Will occur after gearbox is warm.
You can drive it hard with heavy revs and it seems to help it. I have changed the Master Cylinder Oil - there was some metal there but nothing huge.
I don't want to take the box out and put it back and maybe have the same issue again. Any ideas as to the cause here?