履带拖拉机在行驶中,在不拉动操纵杆的情况下,却自动偏离行驶方向的现象,称为自动跑偏。履带拖拉机出现自动跑偏有下列两种原因。 (1)传到两侧驱动轮的力矩不等,使两侧驱动轮的转速不同。①一侧转向离合器操纵杆调整不当,其自由行程太小或没有自由行程,转向离合器处于半分离半接 Crawler tractor in driving, without pulling the joystick, but it automatically deviate from the direction of the phenomenon, known as automatic deviation. Crawler tractor automatic deviation occurs for the following two reasons. (1) The torque transmitted to the driving wheels on both sides varies, so that the rotational speed of the driving wheels on both sides are different. ① side steering clutch lever adjustment is not appropriate, the free travel is too small or no free travel, the steering clutch is semi-detached semi-connected