Insert thin metal sheet between cover rib and brush holder E4A-91-300-801.
Push the metal sheet forward to hold down the upper brush.
Fig. 24 - 9 Brush holder
Push lower carbon brush down with small screw driver.
Push the metal sheet forward to hold down the lower carbon brush.
When the lower and the upper brush are hold down the cover can be demounted.
Push the cover backwards out of the brush holder.
It can take a little effort to push down the cover. Ensure not to damage the cover or
the brushes!
Fig. 24 - 10 Brush holder
The picture below shows the released carbon brushes and the demounted cover.