东方红-75/802型拖拉机后桥壳体主动齿轮座孔处常出现裂纹,其主要原因几乎都是由于大小减速齿轮打坏,没能及时发现或虽已发现而没有及时停车,使打掉的轮齿挤在两齿轮之间,导致后桥壳体、边减速箱壳体胀裂、报废,因此在使用过程中应注意以下几点: 1.禁止起步过猛,尤其是禁止用猛松主离合器方法克服超负荷。 2.履带下垂度要符合规定。正常下垂度为 Dongfanghong -75 / 802 tractor rear axle housing drive gear seat hole cracks often occur, the main reason is almost all due to the size reduction gear broken, not found in time or though it has been found and did not stop in time to knock Of the gear teeth squeeze between the two gears, resulting in the rear axle housing, side gear box shell burst, scrapped, so the process should be noted that the following points: 1. Do not start too fast, especially the prohibition of the use of loose The main clutch method overcomes the overload. 2. Track sag to meet the regulations. Normal sag is