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