1.日常维护要点(1)伸缩臂节的垫板要经常检查,方法是观察、用尺或用按臂节之间正常间隙尺寸制作的量块测量臂节之间的尺寸。标准规定,伸缩臂节每个侧面的间隙不大于2mm,同时在臂节的滑道处要经常涂润滑油。(2)经常检查通往伸缩机构的液压油管、接头,观察臂节的运动情况是否 1. Routine Maintenance Points (1) Retractable plate joints should be inspected frequently by observing the dimensions between the knuckles with a ruler or with a measuring block made of normal clearance between arm sections. The standard stipulates that the gap between each side of the telescopic boom section is not more than 2mm, and lubricating oil should be often applied at the slide section of the boom section. (2) Often check the hydraulic tubing leading to the telescopic mechanism, joints, observe whether the movement of boom section