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