主轴低速及倒车滑动齿轮

mainshaft gear bushing mainshaft overdrive gear sliding gear reverse gear mainshaft speed gear retainer ring low gear progressive sliding gear sliding eliminated gear selective sliding gear pneumatic reverse gear reverse gear train main shaft low and reverse sliding gear mainshaft low speed sliding gear mainshaft sliding gear mainshaft high speed sliding gear reverse sliding gear mainshaft gear transmission first and reverse speed gear mainshaft driven gear mainshaft driven gear bearing mainshaft synchronizer gear sleeve mainshaft differential gear mainshaft synchronizer gear