Compression - Test
只能使用油缸压缩测试来比较发动机的各个油缸。 如果一个或多个油缸的差值超过 350 kPa (51 psi),则可能需要修理该油缸及其相关部件。
不应只使用压缩测试来确定发动机的状况。 还应进行其它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。
- 阀门间隙设定值正确。
- 卸下所有的电热塞。
- 已断开供油。
Show/hide table
图 1 | g01336217 |
典型实例 |
- 从缸盖上的孔 (2) 卸下电热塞 (1) 。 关于拆卸电热塞 (1) 的正确步骤,请参阅拆解和组装, "电热塞 - 拆卸和安装"。
- 安装合适的仪表测量电热塞孔中的油缸压缩。
- 运行起动马达来拖动发动机。 记录压缩表上显示的最大压力。
- 对所有油缸重复步骤 1 至 3 的操作。
Caterpillar Information System:
TH31-C9I, TH31-C9P, TH31-C9T, TH35-C13I, TH35-C13T, TH35-C15I and TH35-C15T Petroleum Power Train Packages and TH31-E61 and TH35-E81 Petroleum Transmissions Transmission Speed Sensor (Drive Disconnect) (Transmission Output)
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Fuse (Flywheel Cabinet)
C6.6 Engines for Caterpillar Built Machines Crankcase Breather
TA22-4WD Agricultural Transmission Transmission
C4.4 Industrial Engine Cleanliness of Fuel System Components
3500B Industrial Engine Safety Messages
C175-16 and C175-20 Generator Set Engines Alternator and Regulator
C13, C15, and C18 Tier 4 Final Engines Connecting Rod
C13, C15, and C18 Tier 4 Final Engines Cylinder Block
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Internal Component Preremoval Steps (Flywheel Cabinet)
C4.4 Industrial Engine Cylinder Head - Inspect
C175-16 Locomotive Engine Crankshaft Wear Sleeves and Seals
325D and 329D Excavators and 325D Material Handler Machine System Specifications Swivel
2006/07/03 A New Speed-Timing Sensor is Available {1912}
C175-16 Locomotive Engine Engine Speed Sensor
390F Excavator Machine Systems Travel Motor - Disassemble
C32 Power Module Engine Valve Lash - Inspect/Adjust
C6.6 Engines for Caterpillar Built Machines Fuel Priming Pump
3606 and 3608 Engines Engine Lifting Bracket - Remove and Install
349F and 352F Excavators Machine System Specifications Control Valve (Boom Lowering) - Manual
568 Forest Machine Machine System Specifications Front Idler
2006/07/03 Change to the Design of the Wiring Harness {1408, 7422}
C4.4 Industrial Engine Piston Height - Inspect
2006/08/14 New Procedure for Measuring the Connecting Rod {1218, 1225}