多年来集-50拖拉机的使用情况表明:①发动机后支座与车架之间的固定螺丝经常松动。螺丝松动后,造成发动机振动严重,使各传动部分不同心,甚至扭坏传动轴及万向节。②发动机前支座固定螺丝经常出现折断现象。折断后,留在固定支座的部分很难取出,需要拆卸很多机件方可,维修不便。③变速箱顶丝座易开焊。开焊后因空间狭窄,不易焊牢。 Over the years set the use of -50 tractor shows: ① engine mounting bracket and the frame between the screws often loose. Loose screws, resulting in serious engine vibration, so that the transmission part of the heart, or even damage to the drive shaft and universal joints. ② engine front bearing fixing screws often appear broken. After the break, it is difficult to remove the part of the fixed support, which requires a lot of mechanical parts to be disassembled for maintenance inconvenience. ③ transmission wire seat easy to open welding. After welding due to space constraints, not easy to weld.