doing my first brake bleed; wrench question

[richard28]

Hi. On my 87 300e, I'm going to do my first brake bleed; it's of the entire system because I had to replace the master cylinder, and the fluid from PO is pretty dirty. I put the car up on ramps and located the bleeder caps & 9mm nuts, but I can't figure out how to get a wrench into the small space to loosen the bleeder nuts. I saw on Fastlane there is a special MB tool with tubing attached, which sells for over $100, but a can't imagine everyone uses this. Do I need a non-standard wrench? Would it help if I took off the wheels ? Thanks.