Relier Pairs mechanical gearbox Version en ligne aprender las partes de la caja mecanica en ingles par cristhian david diaz arevalo 1 thrust bearing 2 secondary tree 3 crankcase gearbox 4 differential crow 5 change selector insurance springs 6 primary tree 7 output shaft 8 input shaft 9 bearings 10 differential 11 synchronizing rings 12 change selector 13 reverse 14 attack pinion 15 gearbox housing 16 gearbox packaging 17 crazy pinion 18 gear lever