不使用专用工具。有的维修工习惯用活扳手拆装螺栓,用螺丝刀拆装挡圈,用榔头或冲子拆装轴承。这些做法,不小心就会造成挡圈变形、轴承损坏或螺母“圆角”,给下一步拆装造成困难。 紧固重要螺栓,不使用扭力扳手。遇到比较粗大的螺栓或螺母,有的修理工在扳手后面加上长把,以为这样拧得更紧。殊不知,对于一些重要的螺栓螺母的拧紧力矩,在使用说明书上都有明确的规定,拧紧力过大,会引起螺栓缩颈,易导致螺栓断裂;用力过小,不仅拧不紧螺母,工作中螺母还会松动发生事故。因此,紧固螺栓不能用加长杆,而应用扭力扳手或其他专用工具。 Do not use special tools. Some maintenance workers are accustomed to using removable wrench bolt, remove the retainer ring with a screwdriver, with a hammer or punch removable bearings. These practices, carelessness will cause the ring deformation, bearing damage or nut “fillet” to the next disassembly caused difficulties. Tighten the important bolts, do not use torque wrenches. Encounter the relatively thick bolts or nuts, and some mechanics in the wrench behind the long, so as to tighten more tight. As everyone knows, for some important bolt and nut tightening torque, there are clear instructions in the operating instructions, tightening force is too large, will cause bolt necking, easily lead to bolt breakage; force is too small, not only tighten the nut, working Nut will be loose accident. Therefore, the fastening bolts can not use longer rods, but the use of torque wrenches or other special tools.