795F AC Off-Highway Truck Automatic Lubrication System (For Electric Start Equipped Trucks) Caterpillar


Automatic Lubrication System Troubleshooting

Usage:

795F AC ERM
必须先识别和确定故障,才能更正故障。 当识别并确定了问题时,可进行"性能检查"一节的内容。 应按照以下步骤以便帮助识别故障。 另外,按照以下步骤以便确定故障。

  1. 进行目视检查以便帮助识别故障。

  1. 在"性能检查"中进行检查以便帮助识别故障。

  1. 执行与故障相关的运行检查。

性能检查




图 1g02176752

自动润滑泵

(1) 自动润滑泵马达

(2) 自动润滑电磁阀

(3) 电动放气阀

(4) 出口单向阀




图 2g02176763

A-A 视图

(4) 出口单向阀

(5) 安全减压器阀

(6) 储脂罐

故障:轴承无润滑

可能的原因

  • 润滑管路断裂或堵塞

  • 储脂罐 (6) 为空。

  • 注油器有故障。

  • 润滑泵有故障。

问题:润滑剂从安全减压器阀中泄露。

可能的原因

  • 系统压力设定值过高。

  • 安全减压器阀 (5) 损坏或污染。

问题:泵不工作。

可能的原因

  • 泵上无电功率。

  • 马达继电器出故障。

  • 自动润滑电磁阀 (2) 出故障。

  • 自动润滑泵马达 (1) 过热。

  • 自动润滑泵马达 (1) 在锁定转子保护时跳闸。

  • 轴断裂。

  • 齿轮断裂。

  • 保险丝熔断。

  • 自动润滑泵马达 (1) 极性反转。

问题:泵运行速度过高。

可能的原因

  • 泵管道出故障。

  • 出气口单向阀 (4) 损坏或污染。

  • 放气阀 (3) 损坏或污染。

  • 系统部件泄露。

  • 喷油器旁通。

问题:泵运行速度加快或运转粗暴

可能的原因

  • 有低量润滑脂。

  • 储脂罐 (6) 为空。

  • 随动板卡死并脱离润滑脂。

  • 泵活塞磨损。

  • 单向阀磨损。

问题:泵运行,但输出量偏低。

可能的原因

  • 马达速度控制设定值过低。

  • 泵进气口或排放单向阀有故障。

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