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1台现代225LC-7型液压挖掘机,客户反映其回转停止时,在惯性作用下继续回转的角度过大,我们根据以往的经验判定该故障的原因是回转马达制动摩擦片磨损过大。为此,我们将回转马达盖子打开,取出制动压紧弹簧、制动缸和制动摩擦片,发现制动摩擦片磨损量不大,其厚度符合要求,且无明显划伤。继续检查回转马达盖和配油盘时,发现配油盘有明显划伤痕迹,我们将回
A modern 225LC-7 hydraulic excavator, the customer reflects the stop turning, the continued rotation under the inertia of the angle is too large, we use the past experience to determine the cause of the failure is due to excessive wear brake motor brake lining. To this end, we will open the rotary motor cover, remove the brake pressure spring, brake cylinder and brake friction plate and found that brake friction plate wear is not large, its thickness to meet the requirements, and no significant scratches. Continue to check the slewing motor cover and oil pan, we found that the oil pan with obvious signs of scratches, we will return