Operational Checks
操作检查可用来查找系统中的泄漏和工作不正常的部件。 杆移动的速度或马达的扭矩可用来检查油缸、马达和泵的状况。
执行下列操作检查,以便诊断和排除有关机器的液压回路和部件的问题。
应在以下条件下执行下述操作检查:
- 发动机转速旋钮 "10"
- AEC 开关 OFF
- 高功率 (HP) 模式
注: 应在液压油温为 55° ± 5°C (131° ± 9°F) 时执行以下操作检查。
- 测试和调整, "发动机性能 - 测试(发动机转速)"
- 测试和调整, "在平地上行驶 - 测试"
- 测试和调整, "在平地上行驶 - 测试(可选测试)"
- 测试和调整, "自动行驶速度控制 - 测试"
- 测试和调整, "机器在斜坡上的沉降 - 检查"
- 测试和调整, "在平地上的回转速度和回转过量 - 检查"
- 测试和调整, "在斜坡上的回转速度和回转漂移 - 检查"
- 测试和调整, "油缸沉降 - 检查(空载铲斗)"
- 测试和调整, "油缸沉降 - 检查(负载铲斗)"
- 测试和调整, "油缸速度 - 检查"
操作检查所用的表中列出的技术规范是经计算的平均值。 由于机器配置和发动机转速不同,这些数值也会不同。 表 1 列出了为获得这些规格而使用的机器配置。
参考有关发动机转速规格,请参阅测试和调整, "发动机性能 - 测试(发动机转速)"。
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机器配置     | |||
---|---|---|---|
销售型号     | 动臂     | 斗杆     | 铲斗     |
390F L     | 总则     | R4.4     | HB4.6GD     |
Caterpillar Information System:
2014/02/06 A New Air Intake Hose Between the Air Cleaner and the Turbocharger is Now Available for Certain Excavators {1071}
390F Excavator Machine System System Pressure - Release
2014/01/31 A New Stub Shaft Is Available for 3500 Commercial Engines {1359}
C4.4 Marine Generator Set High Pressure Fuel Lines
G3600 A4 Engines Ignition Secondary - Test
G3600 A4 Engines Ignition Primary - Test
Installation of the Fuel Consumption Monitoring System for All Commercial Diesel Engines {1250, 1400, 1900, 7490} Installation of the Fuel Consumption Monitoring System for All Commercial Diesel Engines {1250, 1400, 1900, 7490}
2013/12/20 An Alternate Fuel Pressure Gauge for Improved Durability in Some Generator Set Applications {7456}
C-10, C-12 and C-15 On-Highway Engines Maintenance Interval Schedule - C-15 Truck Engine
G3516 TA Engine Engine Shutdown or Start Inhibit Initiated by Driven Equipment
C-10, C-12 and C-15 On-Highway Engines Maintenance Interval Schedule - C-10 and C-12 Truck Engines
2013/12/23 New Improved Engine Control Software Is Now Available for Certain T4 Interim C13 Industrial Engines Used in Haliburton ADP Blender Applications {7610, 7620}
C4.4 Marine Generator Set Model View Illustrations
390F Excavator Machine System Travel on Level Ground - Test
390F Excavator Machine System Travel on Level Ground - Test - Optional Test
390F Excavator Machine System Swing Speed and Overswing on Level Ground - Check
390F Excavator Machine System Swing Speed and Swing Drift on a Slope - Check
390F Excavator Machine System Cylinder Drift - Check - Empty Bucket
390F Excavator Machine System Cylinder Drift - Check - Loaded Bucket
390F Excavator Machine System Cylinder Speed - Check
2014/04/11 New Fuel Transfer Pumps Are Now Used for Certain C27 and C32 Commercial Engines {1256}
745 and 740 GC & 740 EJECTOR Articulated Truck Systems Flood Lamp
390F MHPU Mobile Hydraulic Power Unit Machine Systems Power Shift Pressure - Check
3406C 7E-0329 Valve Cover Base Quality Containment {1107, 1120} 3406C 7E-0329 Valve Cover Base Quality Containment {1107, 1120}