3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks Caterpillar


E074 Oil Filter Differential Pressure Very High

Usage:

785C 1HW
产生此代码的情况:

电子控制模块(ECM)检测到以下情况:

  • 机油滤清器压差大于 200 千帕 (29 磅/平方英寸)的情况达 240 秒。

  • 水套水冷却液温度高于 63 摄氏度 (145 华氏度)。

  • 发动机达到低怠速至少 12 秒钟。

系统响应:

ECM 会记录此事件。 机油滤清器压差警告根据未过滤机油压力减去已过滤机油压力来确定。 当油压差降至 173 千帕 (25 磅/平方英寸)以下的情况达 240 秒或冷却液温度降至 60 摄氏度 (140 华氏度)以下时,此警告会转为非当前状态。

  • 润滑系统可能存在问题。

测试步骤 1. 检查有无"当前"诊断代码

  1. 将卡特彼勒电子技师(ET)连接到维修工具连接器上。

  1. 将钥匙开关转到 ON 位置。 发动机应处于停机状态。

  1. 检查有无当前或记录的诊断代码。

预期结果:

没有任何诊断代码存在。

结果:

  • 与预期结果相符 - 没有任何诊断代码存在。 继续执行测试步骤 2。

  • 与预期结果不相符 - 有诊断代码存在。

    修复: 修正存在的诊断代码。 请参考本手册"对诊断代码进行故障诊断和排除"部分的相应主题。 确保修正后问题被排除。

    停止

测试步骤 2. 检查润滑系统

  1. 检查润滑系统。 有关可能导致相关问题的原因,请参考故障诊断和排除, "发动机机油压力低"部分的诊断程序。

预期结果:

润滑系统没有问题。

结果:

  • 与预期结果相符 - 可能存在间歇性问题。

    修复: 如果问题间歇发生,请参考故障诊断和排除, "检查电气连接器"部分的诊断功能测试。

    停止

  • 与预期结果不相符 - 润滑系统存在若干问题。

    修复: 修正问题。 确保修正后问题被排除。

    停止

Caterpillar Information System:

797B Off-Highway Truck Engine Starting with an External Air Supply
CP-433E, CS-423E and CS-433E Paving Compactors Alert Indicators
3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks E073 Oil Filter Differential Pressure High
CP-433E, CS-423E and CS-433E Paving Compactors Battery Disconnect Switch
RM-350B Reclaimer/Mixer Machine Systems Hydraulic Cylinder (Mixing Chamber Front Door)
CP-433E, CS-423E and CS-433E Paving Compactors Plate Locations and Film Locations
797 Off-Highway Truck Hydraulic System Hydraulic Tank
IQAN<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> Monitoring ; Control System Counters
3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks E035 Loss of Coolant Flow Warning
773E Off-Highway Truck Engine Supplement Radiator - Disassemble
776D Tractor and 777D and 777D HAA Off-Highway Truck Hydraulic System Gear Pump (Hoist)
TH350B, TH360B, TH460B and TH560B Telehandlers Machine Systems Hydraulic Tank
RM-350B Reclaimer Mixer Machine Electronic Control System Switches
3524B Engines for Off-Highway Trucks E098 Engine Prelube Override
2002/04/22 A New Hydraulic Oil Filter Improves Service Life {5068}
814F Wheel Tractor, 815F Soil Compactor and 816F Landfill Compactor Power Train Transmission Planetary
CP-433E, CS-423E and CS-433E Paving Compactors Horn
CP-433E, CS-423E and CS-433E Paving Compactors Backup Alarm
CP-433E, CS-423E and CS-433E Paving Compactors Seat
824H Wheel Dozer, 825H Soil Compactor and 826H Landfill Compactor Power Train Torque Converter from Transmission, Output Transfer Gears - Separate
797B Off-Highway Truck Stopping the Engine if an Electrical Malfunction Occurs
797B Off-Highway Truck Leaving the Machine
TH350B, TH360B, TH460B and TH560B Telehandlers Machine Systems Boom Cylinder
TH350B, TH360B, TH460B and TH560B Telehandlers Machine Systems Boom Cylinder
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.