replacing kh laser front rotors.

[reddevil6]

Hey guys i recently bourght a 91 kh laser 1.6l carb Auto. disk break front drum rear. I need to replace the front rotors and pads as they are warped and have a bit of a lip ( i think because undersized pads) now i keep being told to replace the rotors i have to destroy the wheel bearing in order to get them off then press new ones in. im thinking this cant be right stupid design if it is the case. I just want to clarify how to replace the rotors?
also anyone know where i can download a workshop manual?