The motor unsoldered from its connections and removed from the chassis. Here shown with a brand new set of brushes and springs. The bush housings do not come with the replacement brushes. 40015900 is the correct part number for the 9F and may be still available from German ebay suppliers. If not, make your own. See information on the 'Other Information' menu - follow Key Parts and select 'Brushes' from the right hand menu.