1986 Mercedes Benz 300sd How to remove a/c fan or blower mo

I started today 4/7/08 dismantling all the items on the way to the blower housing, but I could not figure out how to open or take out the whole blower housing. I did removed the clips that hold the housing assembly but to no avail I still could not pull the whole thing out. What must I do now? The reason why I am doing this was at first I heard there was a sound like shuting down fan then the nexrt thing that happen was the blower shut off and now would not work anymore. I did check the fuse,the relay, switches and they are all good. Tell me what would seem the next thing I should do.