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天津港１９９９年从日本购进小松５００型装载机８台，用于南疆金属泊位，投入使用１０００ｈ左右，４号车突然出现走车现象，故障特征为： 正常行驶过程中，车突然停下来，停车制动指示灯亮，发动机工作正常。关掉钥匙开关，变速杆放在空挡位置，重新启动发动机，停车制动指示
In 1999, Tianjin Port purchased 8 sets of Komatsu 500 loaders from Japan for metal berths in southern Xinjiang and put it into operation for about 1,000 hours. The sudden appearance of the No. 4 car left the car. The fault features were as follows: during normal driving, the car suddenly stopped , Parking brake indicator light, the engine is working properly. Turn off the key switch, shift lever on the neutral position, restart the engine, parking brake instructions