3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Engine Overspeeds on Start-up

Usage:

3412E 1KR
利用此程序诊断与排除发动机起动后立即出现的发动机超速故障。 另请参阅故障诊断与排除, "发动机超速",以诊断与排除不在发动机起动时发生的发动机超速故障。

可能原因

  • 喷油器

  • 油门信号

  • 涡轮增压器油封

  • 起动辅助装置(如果适用)

  • 通风

建议的措施

喷油器

请参阅诊断程序故障诊断与排除, "发动机缺火、运转粗暴或不稳定"。

油门信号

将 Caterpillar 电子技师 (ET) 连接到维修工具接头上。 检查有无激活的诊断代码和事件代码。 查找有无与油门信号相关的激活诊断代码。 继续执行本程序前,解决与激活诊断代码相关的所有问题。

盘车前,确保应用程序的油门已设定到低怠速位置。 盘动发动机的同时,监视 Cat ET 上 "Throttle Position(油门位置)"参数的状态。 "Throttle Position(油门位置)"参数的低怠速设定值为 0%。 修复所发现的全部问题。 请参阅故障诊断与排除, "转速控制 - 测试",以了解与油门信号故障诊断与排除有关的信息。

涡轮增压器油封

正在泄漏的涡轮增压器油封可以为不能得到燃油供应的发动机提供燃油。 机油经由进气管流入发动机。 机油为发动机提供燃油。

拆下每台涡轮增压器压气机壳体上的进气管。 目视检查每个压气机壳体内有无机油。

起动辅助装置(如果适用)

检查起动辅助装置是否正常工作。

通风

检查周围大气中有无碳氢化合物。 不要在周围大气中含有碳氢化合物的环境中运转发动机。

Caterpillar Information System:

EquipmentManager Dealer Administrator Manual Manage Planned Maintenance
EquipmentManager User Guide Upload Data
EquipmentManager Dealer Administrator Manual Manage Event Tracking
3412E Engine for Caterpillar Built Machines Engine Misfires, Runs Rough or Is Unstable
3176C, 3406E and 3456 Industrial Engines Engine Has Mechanical Noise (Knock)
C4.4 and C6.6 Engines for Caterpillar Built Machines Can Not Reach Top Engine RPM
C4.4 and C6.6 Engines for Caterpillar Built Machines Customer Specified Parameters Worksheet
C4.4 and C6.6 Engines for Caterpillar Built Machines Customer Specified Parameters Table
C1.1, C1.5 and C2.2 Engines for Caterpillar Built Machines Governor - Adjust
C4.4 and C6.6 Engines for Caterpillar Built Machines Customer Specified Parameters
C4.4 Industrial Engine Fuel Related Components in Cold Weather
C4.4 and C6.6 Engines for Caterpillar Built Machines Multiposition Switch Setup
EquipmentManager User Guide Preferences
EquipmentManager Dealer Administrator Manual Asset Watch
420E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Hydraulic and Steering System Control Valve (Bucket)
938H Wheel Loader and IT38H Integrated Toolcarrier Hydraulic System Pilot Valve
C15 and C18 Generator Set Engines Radiator Bottom Tank - Remove and Install - Jacket Water Heater
420E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Hydraulic and Steering System Control Valve (Swing)
C15 and C18 Generator Set Engines Radiator Top Tank - Remove and Install - Jacket Water Heater
587R Pipelayer Machine Systems Hydraulic Tank and Filter - Remove
587R Pipelayer Machine Systems Hydraulic Tank and Filter - Install
2007/07/16 Improved Belts are now Used {1357, 1397, 1405, 7320}
3408E and 3412E Engines for Caterpillar Built Machines Cylinder Head
3412E Engine for Caterpillar Built Machines Engine Shutdown Is Intermittent
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.