我单位1992年进场的一台JL1075型联合收割机,参加作业仅几个班次,就发生了行走增扭传动带带轮轮毂(件号:S50321)的外侧轴承(OOM7507)与柱塞轴烧住咬死的故障。现场检查并不缺油。换上新轴承,按说明书调好轴承间隙,注油后又投入作业,但工作不到一个班次,又发生了上述故障。经过对离合器及下部传动装置的检查,认为没问题,就又换装 A JL1075 combine harvester that I started in 1992 took a few shifts to the outside, bearing (OOM7507) with running pulley hub (key no. Bite death of the fault. Site inspection is not short of oil. Replace the new bearing, according to the instructions tune the bearing clearance, oil and put into operation, but work less than a shift, but also the above-mentioned failure. After the clutch and the lower transmission inspection, that no problem, they changed again