Bosh WFX2867 Carbon brush replacement?

Couple of days ago , the washing machine popped the fuse on the meter. After reset, the machine was operating but the drum was not turning. I assumed it must be the motor but after reading other posts here I decided to check the brushes. It has been very tricky trying to access them however. They cannot be accessed through the removable panel in the back ( where you can access the belt) and the only removable panel seems to be on the bottom. I removed this by putting machine on back and have managed to take out one brush and it is indeed worn out. Spares are on their way.
My question is:
1 -Would a worn out brush cause the fuse to pop, or is this sign of something more drastic.
2- Have I missed something or is there an easier way to access motor?
3 The second brush is more difficult to access, so I may have to remove motor. Any ideas on how to do this, Do you I remove bolts first through the removable back panel.
I have pics that I can upload.
Thanks for all your help
Lou