Swift braking problems

Hello! I wanted to make the complete brakes together with my old men at my Swift 1.0 Bj 97 (39kw) ! Drum brakes went very fast and without any problems now I have arrived at the front of the disc brakes! Blocks are down my father has now tried to take out the brake discs. We have opened a 30s mother and my father has with a tool (attacks at 3 places of the disc and lifts the disc centered out with a rotation – attacks on the pen, on which the mother sat) tries to lift the disc out! Instead, the joint is now out up to half… Is there any way to push the joint back in again? Problem is that the axle cuff is in the back, so you don’t really have a point to touch! I tried to push in very easily with the help of the steering – but without success, because the joint is bulky inside! Would I be happy about answers Gruss Michaeh PS: another question : how b can I get out the disc brake properly? was I already too far with the big mother and had to start before that? many thanks in advance