3512B Petroleum Engines with the ADEM 2 Electronic Control Module Caterpillar


E012 High Crankcase Pressure Derate

Usage:

3512B 2AF
产生此代码的情况:

发动机曲轴箱压力已经超过设置点,滞后时间已经到期。

系统响应:

发动机功率减额。 记录该代码。

下列其中一个发动机部件可能有故障:

  • 曲轴箱呼吸器堵塞

  • 曲轴箱压力传感器

  • 发动机部件磨损

测试步骤 1. 检查曲轴箱呼吸器

  1. 检查曲轴箱呼吸器堵塞

    曲轴箱通气装置堵塞将引起曲轴箱压力过大。 曲轴密封泄漏可能发生。 活塞环的密封可能丢失。 曲轴箱窜气将会 增大曲轴箱压力。

结果:

  • 曲轴箱呼吸器堵塞。 -

    修复: 清洁曲轴箱呼吸器。

    停止

  • 曲轴箱呼吸器没有堵塞。 - 继续下一个测试步骤 2。

测试步骤 2. 检查曲轴箱压力传感器

  1. 检查曲轴箱压力传感器,以达到清洁干净的目的。 如果传感器不干净,清洁传感器。 如果状况正常,使发动机恢复运行。 如果状况不正常,继续执行下一步骤。

  1. 用一已知正常的传感器替换曲轴箱压力传感器。

结果:

  • 状况正常。 - 停止

  • 状况不正常。 - 继续下一个测试步骤 3。

测试步骤 3. 检查发动机部件是否磨损

  1. 活塞或活塞环损坏可造成曲轴箱压力过高。 这种状况会导致发动机运转不平稳。 从曲轴箱通气装置冒出的烟雾(窜气)也会高于正常水平。 此通气装置就可能会在很短的时间里阻塞,造成正常情况下 不该漏油的密封垫和密封出现漏油。 曲轴箱窜气也可能因磨损的气门导管或损坏的涡轮增压器密封而导致的。

  1. 8T-270 0曲轴箱窜气量/空气流量指示仪 可检查窜气量。 有关检查曲轴箱窜气量的测试程序,请参阅专门说明书, SEHS8712, " 8T-2700 曲轴箱窜气量/空气流量指示仪 的使用"。

预期结果:

彻底检查后发现故障。

结果:

  • 正常 - 发动机部件存在故障。

    修复: 修理故障。 确保修理后故障被排除。

    停止

Caterpillar Information System:

C27 and C32 Engines for Caterpillar Built Machines Exhaust Sensor Lines - Remove and Install
312F and 313F Excavators Belt - Inspect/Adjust/Replace
3306B Generator Set Safety Messages
3306B Generator Set Generator Bearing Temperature - Measure/Record
3500B Generator Sets Generator Bearing - Lubricate
3306B Generator Set Alternator and Fan Belts - Inspect/Adjust/Replace
3306B Generator Set Generator Bearing - Inspect
3306B Generator Set Refill Capacities and Recommendations
793F and 797F Off-Highway Trucks Chassis Electronic Control System Backlight Does Not Illuminate
C3.4B Engines Diesel Particulate Filter Collects Excessive Soot
C3.4B Engines Coolant Level Is Low
Final Drive Steering System, Wheel Braking System, and Wheels & Tires Salvage and Reuse Manual Contents {4000, 4050, 4100, 4250, 4300} Final Drive Steering System, Wheel Braking System, and Wheels & Tires Salvage and Reuse Manual Contents {4000, 4050, 4100, 4250, 4300}
UPSB125 Uninterruptible Power Supply UPS Battery - 50Hz Basic Preventive Maintenance
UPSB125 Uninterruptible Power Supply UPS Battery - 50Hz Advanced Preventive Maintenance
C3.4B Engines Diesel Particulate Filter Temperature Is Low
120 and 120 AWD Motor Grader Braking System - Test
793F and 797F Off-Highway Trucks Chassis Electronic Control System Backlight Is On Continuously
Retrofitting for Ultra Lean Burn (ULB) on Certain G3516 Engines{1000, 775E} Retrofitting for Ultra Lean Burn (ULB) on Certain G3516 Engines{1000, 775E}
312F and 313F Excavators Engine Oil Level - Check
C27 and C32 Industrial Engines Exhaust Gas Valve (NRS) - Remove and Install
320E and 323E Excavators Fuel System Primary Filter (Water Separator) Element - Replace
C3.4B Engines Engine Has Early Wear
Replacing the High Pressure Fuel Pump on Certain C7 and C9 Engines{1251, 1714} Replacing the High Pressure Fuel Pump on Certain C7 and C9 Engines{1251, 1714}
312F and 313F Excavators Fumes Disposal Filter Element - Replace
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.