Today I just put my tranny back together on my 1985 500sel, Now i believe it could be a bad b2 piston for sure. Now to my question where is the b2 piston located on the tranny and do I have to pull out the whole tranny or can i operate while it is still on the car. I have pull the valve housing out and the valves are working fine, the car still will not move until the rpms are at 2800


Thanks hollow