Noise Coming from Cylinder
- 劣质燃油
- 发动机转速 / 正时传感器
- 电气接头
- 喷油器
- 润滑不足
- 气门间隙过大
- 配气机构部件损坏
- 连杆轴承故障
有关正确的燃油特性的信息,请参阅操作和保养手册。 获取燃油分析。
如果 CID-FMI 261-13 发动机正时需标定诊断代码激活,则标定发动机转速/正时传感器。 请参阅故障诊断和排除, "发动机转速/正时传感器 - 标定",了解标定步骤。
检查电子控制模块(ECM)的接头 J1/P1 和/或 J2/P2 是否正确安装。 检查适用的喷油器接头是否正确安装。 维修接头和/或更换接头。 请参阅故障诊断与排除, "检查电气接头"中的诊断功能测试。
采用 Caterpillar ET(Electronic Technician,电子技师)确定是否存在任何喷油器电磁阀的诊断代码。 执行"喷油器电磁阀测试"。 观察 Cat ET 对喷油器电磁阀励磁。 检查喷油器高度设定。 执行"Cylinder Cutout Test(断缸测试)"。 找出缺火气缸。 请参阅故障诊断和排除, "喷油器电磁阀"中的诊断功能测试。
检查气门室的润滑情况。 检查喷油器挺杆和摇臂按钮之间是否充分润滑。 检查油道是否堵塞。 油道必须清洁。 确保将机油输送至缸盖的油道清洁。
检查气门间隙。 参考诊断步骤故障诊断与排除, "气门间隙过大"。
从怀疑有故障的气缸上卸下气门室盖。 检查以下项目有无损坏:凸轮轴、气门弹簧座、气门弹簧、挺杆、推杆和气门桥。 检查有无不能自由移动的气门。 拆下缸盖。 检查每个气门。 更换所有损坏的零件。
检查连杆轴承和曲轴上的轴承表面(轴颈)。 检查活塞销有无过度磨损。 更换所有损坏的零件。
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