now I changed the sealing but I can't get out the air in the system
I have to much play at the lever
my normal procedure
1. press the piston back complete in the rear caliper
2. open the screw in the rear caliper - fit a 6mm tube
3. press the lever the brake fluid and air comes out
4. close the screw
5. release the lever
6. open the screw
7. press the lever
8. close the screw
9. release the lever
and so on
at the end I apply the lever so long until the piston press the brake pads close to the disk
normaly it works in this way
there is no more leaking !!!!!
but every time I have to much play in the lever
When I start the precedure new - new air bubbles comes out of the little screw
any idea?