C4.4 and C6.6 Engines for Caterpillar Built Machines Caterpillar


Engine Will Not Crank

Usage:

CS-56B 437

可能原因

  • 机器安全系统(如果配备)

  • 蓄电池电缆和/或蓄电池

  • 起动马达电磁阀或起动电路

  • 起动马达和/或飞轮齿圈

  • 供电电源

  • 内部发动机故障

修理建议

机器安全系统(如果配备)

  1. 验证正在使用正确的点火钥匙。 把钥匙开关转到接通 位置。

  2. 使用电子服务工具检查诊断代码 1639-09 是否激活。 验证机器安全系统灯点亮。

  3. 如果诊断代码1639-09 激活,则配装了机器安全系统。 停用机器安全系统,然后尝试起动发动机。

  4. 如果发动机未起动,使用电子维修工具检查记录的诊断代码。

  5. 修复所有的诊断代码。 确认修理消除了故障。

  6. 如果没有激活的诊断代码,请根据机器使用参阅故障排除手册。

蓄电池电缆和/或蓄电池

  1. 检查主电源开关、蓄电池接线柱和蓄电池电缆连接是否松动和有无腐蚀。 如果蓄电池电缆受到腐蚀,应拆下蓄电池电缆并清洁蓄电池电缆。 清洁蓄电池极柱。 更换电缆。 紧固任何松动的连接。

  2. 检查蓄电池。

    1. 向蓄电池充电。

    2. 进行蓄电池负荷测试。 请参阅系统操作、 测试和调整, "蓄电池 - 测试"。

起动马达电磁阀或起动电路

  1. 测试起动马达电磁阀的工作情况。 请参阅系统操作、测试与调整 , "电子启动系统 - 测试"。

  2. 检查通到起动马达电磁阀的接线。

起动马达和/或飞轮齿圈

  1. 测试起动马达的工作情况。 检查起动马达接线。 请参阅系统操作、测试与调整 , "电子启动系统 - 测试"。

  2. 检查起动马达小齿轮和飞轮齿圈是否损坏。

供电电源

如果没有电源,请调查原因并修复所有缺陷。 请参阅系统操作、测试与调整 , "充电系统 - 测试 "。

发动机内部故障

  1. 卸下预热塞。 请参考 拆解和组装, "电热塞 - 拆卸和安装 "。

  2. 尝试在两个方向上各旋转曲轴 360 度。 如果曲轴转动正常,但是有液体从预热塞孔中喷出,则应调查油缸中液体的原因。

  3. 如果曲轴转动正常且没有液体喷出,则安装预热塞。 请参考拆解和组装 , "电热塞 - 拆卸和安装 "。

  4. 如果发动机在步骤 2中没有转动,拆解发动机。 请参阅拆解和组装 。

  5. 检查内部部件有无下列情况:

    • 咬合

    • 故障

    • 变形

Caterpillar Information System:

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