I rebuilt the rear in my SX....no manual...pretty straight forward...the axle slides out of the rear "carrier"...I have to agree with Cool Pool I would check the hubs....that axle is pretty stout...if it broke it would definitly go out with a "bang" if it broke under a load....as I remember I dont think the axles would walk out....there are collars on both sides that keeps everything from moving side to side, the end tubes keep the axle in place...
1985 Honda 250SX
1991 Suzuki LT230E
1970 Sierra Trail Boss 6X6 (under restoration)