Hello guys! I drive a 1990s Toyota Celica 4WD, with permanent all-wheel drive, distribution gearbox with Visco clutch, 50/50% power distribution. Here more precisely: http://gtfour.ch/…/prozessue.php?… Was last on the brake test bench, the car stood with the front axle in the test bench, the rear axle stood on gravel (was outdoors). When the wheels set in motion, the standing rear axle did not move any mm as if it would not be driven. Then as the rear axle at the test The test bench didn’t turn very fast, it didn’t last long. Furthermore, the tester said that the cars can’t handle this and that they can’t turn to the opposite direction, because that’s how it works. If my car was standing the same way, there was no reaction at the VA. Well, the question: how does it work? According to the tester, his test bench wheels are rotating at the same time, but I’m not sure that you would see that at the brake values, the brake does not brake equally well in both directions?!? I can turn the cardan shaft very slowly with a lot of power without the front wheels wanting to turn. I don’t get it somehow, how does it work? Is this drive really permanent? Can something be broken there, can I check something? Can the cover-free visco coupler (actually lock) be broken or worn out? How can I control this? Please for help, Mfg Chris