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