Symptom Troubleshooting
诊断和排除症状时使用以下指南:
了解机器的工作情况。 了解该症状是正常的工作特性还是故障。
阅读系统操作信息,了解机器的所有系统。 了解机器系统的相互作用。
向操作员了解症状情况。 需要以下信息:
- 发生故障前机器的性能
- 症状的第一次出现
- 发生故障时的工作状况
- 发生故障之前的事件顺序(发生顺序)
- 所采用的故障诊断和排除的步骤
- 机器修理历史记录。
- 机器预防性保养
- 与该机器序列号和当前故障的相关维修信息
- 检查机器。 查找故障。 注意空气中任何异常气味。 倾听是否有异常噪音。
执行"目视检查"步骤。 请参见故障诊断和排除, "准备进行机器的故障诊断和排除"。
可能时,试着重现症状。 运转机器并再现引起故障的工况。 检查驾驶室仪表。 注意空气中任何异常气味。 倾听是否有异常噪音。
确认 ECM 是否检测到故障。 诊断代码指明各个检测到的故障。
利用从操作员和您检测时获得的信息 如果有多个症状,尝试确定一个通常原因。
如果进行故障代码的故障诊断与排除后该故障仍未排除,则利用本手册中的 "症状诊断和排除" 章节继续进行故障诊断与排除。 确定最有可能引起该症状的部件。
使用本手册中的测试和步骤来确定症状的原因。 一旦确定症状原因,修理故障。 然后,再次测试系统,确认故障已排除。
共享故障诊断和排除信息。 执行完正确的修理后,写一份有关机器症状、测试和修理的简要说明。 为此可使用 "SIS" 中的表格或 "CBT" 反馈。 包括电话号码或电子邮件地址,以便和您联系。 该反馈信息有助于 Caterpillar 改善服务信息。
Caterpillar Information System:
914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Emerging Symptom Information
R1600G Load Haul Dump 3176C Engine Supplement Engine, Torque Converter and Updrive Gears - Install
C9.3 Tier 4 Final Engines Belt Tensioner - Alternator and Compressor
C13, C15, and C18 Tier 4 Final Engines Electric Starting Motor
Excessive Wear of the Crankshaft Rear Thrust Washer in Large Off-Highway Trucks{1202} Excessive Wear of the Crankshaft Rear Thrust Washer in Large Off-Highway Trucks{1202}
C9.3 Engines for Caterpillar Built Machines Rocker Arm and Shaft - Remove and Install
C9.3 Engines for Caterpillar Built Machines Compression Brake - Remove and Install
142-1664 Adjustable Lifting Bracket Group{0599, 0629, 0700, 0729, 0757, 1122} 142-1664 Adjustable Lifting Bracket Group{0599, 0629, 0700, 0729, 0757, 1122}
C9.3 Engines for Caterpillar Built Machines Valve Mechanism Cover - Remove and Install
C9.3 Engines for Caterpillar Built Machines Cylinder Block Cover - Remove and Install
2011/05/26 An Improved Relief Valve Group is Now Used in the Torque Converter Filter and Lines Group on the 777F Off-Highway Trucks {3103}
2011/07/11 A New Backup Ring Improves the Rear Suspension Group on Certain Off-Highway Trucks {7201, 7213}
980M Tier 4 and 982M Tier 4 Wheel Loaders Machine Systems Steering Control Valve - Disassemble
980M Tier 4 and 982M Tier 4 Wheel Loaders Machine Systems Steering Control Valve - Assemble
914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Wiring Harness (Open Circuit) - Test
914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Wiring Harness (Short Circuit) - Test
3516B Engine for 994F and 994H Wheel Loaders Electrical Power Supply - Test
980M Tier 4 and 982M Tier 4 Wheel Loaders Machine Systems Electrohydraulic Control (Joystick) - Remove and Install
2011/05/25 Updated Cat EPD Alternator Failure Report Template Is Now Available for Cat Generator Sets {1404}
914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Cat Data Link
Cat® Detect Object Detection Camera - Clean
Cat® Detect Object Detection Configuration Screen
Cat® Detect Object Detection Diagnostic Summary Screen
Cat® Detect Object Detection Display - Clean