论文部分内容阅读
1台国产8.5t级全液压挖掘机配装康明斯B3.3型发动机。在冬季启动时,启动机发出“嗡嗡”声,但无法将曲轴转动。维修人员感觉可能是发动机有故障或启动时液压系统负载过大。1.排查发动机(1)原因分析根据故障现象分析,发动机无法启动的原因可能有以下5点,一是发动机机油黏稠,二是曲轴抱瓦,三是发动机某个部位卡滞,四是冬季蓄电池电压低,五是启动机故障。(2)故障排查首先,抽出机油尺检查,发现机油充足、油质良好。其次,用橇棍撬动发动机飞轮,其转动自
A domestic 8.5t full hydraulic excavator equipped with Cummins B3.3 engine. At winter start, the starter made a “buzzing” sound, but the crankshaft could not be turned. Maintenance personnel may feel the engine is faulty or hydraulic system load is too large when starting. 1. Investigation of the engine (1) Analysis of the reasons According to the analysis of the failure phenomenon, the engine can not start the reason may have the following 5 points, one is the engine oil viscosity, the second is crankshaft hugging, the third is a part of the engine stuck, the fourth is the winter battery Low voltage, five starter fault. (2) Troubleshooting First, take out the oil dipstick inspection and found that adequate oil, good oil quality. Second, use a stick to pry the engine flywheel and rotate it