C3.4B Engines for Caterpillar Built Machines Caterpillar


Compression - Test

Usage:

CD-44B 398
只能使用气缸压缩压力测试来比较一台发动机的各个气缸。 如果一个或多个气缸的差值超过 350 kPa (51 psi),则可能需要修理该气缸及其相关部件。

不应只使用压缩压力测试来确定发动机的状况。 还应进行其他测试来确定是否需要调整或更换部件。

进行压缩性能测试之前,先确保存在下列条件:

  • 蓄电池状况良好。

  • 蓄电池已完全充电。

  • 起动马达工作正常。

  • 气门间隙正常。

  • 已拆卸所有预热塞。

  • ECM 已通电。

  • 燃油压力传感器已连接。

  • 吸油控制阀已连接。




    图 1g02647199

    典型示例

  1. 拆下预热塞 (1) 。 请参阅拆解和组装, "电热塞 - 拆卸和安装",以了解正确的程序。

  1. 将一个用于测量气缸压缩压力的适当仪表安装到预热塞 (2) 的孔中。

  1. 拆下预热塞的保险丝。

  1. 操纵起动马达来转动发动机。 记录压缩压力表上显示的最大压力。

  1. 对所有气缸重复步骤 2 和 4。

  1. 安装预热塞的保险丝。

Caterpillar Information System:

349E Excavator Machine System Specifications Auxiliary Hydraulic Lines - Coupler Lines
349E Excavator Machine System Specifications Auxiliary Hydraulic Lines - Coupler Lines
C13, C15, and C18 Tier 4 Final Engines Flywheel
C15 and C18 Engines for Caterpillar Built Machines Engine Trunnion
2011/12/05 A New Valve Assembly is Now Used on Certain Excavators and Mobile Hydraulic Power Units {5057}
2011/07/22 Proper Installation of Exhaust Bellows for C175-16 Generator Set Engines {1059}
CG137-08 and CG137-12 Engines Exhaust Bypass - Remove and Install
301.5, 301.6, 301.7 CR, 301.8 and 302 CR Mini Hydraulic Excavators General Hazard Information
C3.4B Industrial Engine Emissions Certification Film
C13, C15, and C18 Tier 4 Final Engines Fuel Manifold (ARD)
C9.3 Engines for Caterpillar Built Machines Exhaust Sensor and Lines (NRS)
330C Forest Machine Machine System Specifications Track
C13, C15, and C18 Tier 4 Final Engines Turbocharger
CG137-08 and CG137-12 Industrial Engines Lubrication System
C13, C15, and C18 Tier 4 Final Engines Turbocharger
C13, C15, and C18 Tier 4 Final Engines Turbocharger
CG137-08 and CG137-12 Engines Exhaust Manifold - Remove and Install
CX28 On-Highway Transmission Transfer Gear Oil Level - Check
349F and 352F Excavators Machine System Specifications Solenoid Valve (System 16, 1-Way, 2-Pump)
3516C Generator Set Engines Engine Speed/Timing Sensor
C13, C15, and C18 Tier 4 Final Engines Cylinder Head
G3600 A4 Engines Engine Speed Sensor
G3516H and G3520H Generator Set Engines Atmospheric Pressure Sensor
C175-16 Locomotive Engine Crankcase Pressure Sensor
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.