Hi, new member, just wanted to post and say how useful this thread has been to me. I've been tearing my hair out trying to fix my brakes on an 89 745DL, and now I definitely know I ruined my master cylinder, and that I wasn't following an apropriate bleeding procedure.
I replaced everything due to horrible corroded I think original parts on an estate car, and to give you an idea how big a pain this brake job has been, the driver front rotor removal required complete removal of the hub, and STILL wouldn't pop off even when using a 12 ton press related to the amounr of rust jammed in there. I ended up cutting the rotor completely through and pressing off then. LF needed 4 new wneel studs an wheel bearings after that, and the other 4 have been similar level of problems
I am wondering how the OP made out? I am waiting for my master in the mail now.
I replaced everything due to horrible corroded I think original parts on an estate car, and to give you an idea how big a pain this brake job has been, the driver front rotor removal required complete removal of the hub, and STILL wouldn't pop off even when using a 12 ton press related to the amounr of rust jammed in there. I ended up cutting the rotor completely through and pressing off then. LF needed 4 new wneel studs an wheel bearings after that, and the other 4 have been similar level of problems
I am wondering how the OP made out? I am waiting for my master in the mail now.