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在检修拖拉机过程中,发现不少东方红-75/54型拖拉机的转向离合器制动带垂直调整螺钉不见了。问及修理人员,他们的回答是:这个螺钉可有可无,有它反而麻烦。这种看法是非常错误的。每个制动带总成的质量约为2.4千克,制动带安装后,在重力的作用下,产生下垂,造成制动带摩擦材料两端与转向离合器被动鼓间处于摩擦状态,加速了两端的早期磨损。制动带工作时,一端出现小面积接触,制动作用差,易出现踏板打脚现象,严重时造成摩擦材料剥落损坏。为防止由此造成损坏,在后桥壳体底部对应制动带的垂直位置中部设有1个M12×45的制动带垂直调整螺钉,以保证制动带与被动鼓外圆表面的
In the process of overhauling the tractor, it was found that many steering wheel clutch clutches with vertical adjustment screws were missing from the DF-75/54 tractor. Asked the repair staff, their answer is: This screw is dispensable, it has trouble. This view is very wrong. The weight of each brake band assembly is about 2.4 kg. After the brake band is installed, sagging occurs under the action of gravity, resulting in friction between both ends of the friction material of the brake band and the driven drum of the steering clutch, accelerating the two End of the early wear and tear. Braking band work, one end of a small area of contact, poor braking, prone to foot pedal phenomenon, resulting in serious friction material spalling damage. In order to prevent the damage caused by this, a M12 × 45 brake band vertical adjustment screw is arranged in the vertical position of the bottom of the rear axle housing corresponding to the brake band to ensure that the brake band and the outer surface of the passive drum