Miele W504. Home › Forums › Trade Technical & Spare Parts Forums › Trade Technical Enquiries › Miele W504. This topic has 0 replies, 1 voice, and was last updated 17 years, 9 months ago by ChrisR. Viewing 1 post (of 1 total) Author Posts June 19, 2008 at 9:40 pm #37515 ChrisRParticipant Hi guys. Although I`ve been in the trade a long time,I`ve never changed carbon brushes on this model. Its going to change next week so I`d be obliged if someone could advise on the procedure. Thanks. Chris. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In