Watch this video first for a better explanation of how a 5-speed hub and that includes a linked video for a 3-speed. The exploded parts diagram http://www.karstilo.net/files/karstilo/hpv/sachs_sram/5gang/t5/t5_leer1d.gif is correct for this hub except for the brake so refer to parts 9 through 15 on http://www.karstilo.net/files/karstilo/hpv/sachs_sram/5gang/t5/t5_rueck1e.gif