I recently had to work on one of these fine pieces of machinery, needed new rear brake pads....if you aren't familiar these have the parking braked integrated into the rear calipers with electric motors....anyways, I tried everything I could think of to push em in.....disconnected wire, opened bleeder, pushed piston, turned piston, funny thing is though I couldn't turn the piston to the right any, I could get about 1/4 of a turn to the left, but it didn't go anymore after that. We only have Mitchell at work, so of course I couldn't find anything about it on there(didn't even have a brakes subcategory for it!). After all that bullshit any nobody in the shop having a clue how to push the pistons in, I was ready to park this pile on the train tracks. Any of you guys have a clue??