Common Issues and Solutions for Cummins 855 Engine Thrust Washers

[MikePhua]

The Cummins 855 engine is widely used in various heavy machinery due to its robust power and durability. During maintenance, thrust washers are a common component that may experience wear or damage. Thrust washers are located between the engine's crankshaft and other moving parts to reduce friction and maintain proper clearance. Failure of these washers can lead to severe mechanical damage or performance degradation.
Common Thrust Washer Issues

1. Wear of Thrust Washers: Due to long-term, high-load operation, thrust washers experience significant friction, which leads to wear. Excessively worn washers can result in larger gaps between engine parts, affecting the engine's normal operation.
   
2. Thrust Washer Damage or Displacement: If thrust washers are of poor quality or improperly installed, they may break or dislodge, causing issues such as abnormal oil pressure, oil leaks, and even engine damage.
   
3. Improper Installation of Thrust Washers: When replacing or repairing thrust washers, improper installation can cause uneven load distribution, increasing friction and shortening the washer's lifespan.
   
4. Oil Contamination: Contaminated oil can accelerate the wear of thrust washers. If the oil contains impurities or wear particles, it can damage the washers and other engine components.
   

Troubleshooting and Solutions

1. Check Thrust Washer Wear: Regularly inspect the thrust washers for wear. If significant wear is detected, replace the washers immediately to prevent further damage and ensure optimal engine performance.
   
2. Inspect for Damage or Displacement: During engine maintenance, check that the thrust washers are intact and correctly installed. If any washers are damaged or displaced, replace them and inspect for other related issues.
   
3. Follow Proper Installation Procedures: When replacing thrust washers, ensure they are installed according to the manufacturer's guidelines. Proper installation ensures even load distribution and reduces the risk of premature failure.
   
4. Replace and Clean Oil: Regularly check the quality of the engine oil and ensure it is clean. Replace contaminated oil and clean the system to prevent debris from entering the engine and damaging the thrust washers.
   

Conclusion
Thrust washers in the Cummins 855 engine play a critical role in maintaining engine stability and efficiency. By regularly checking for wear, damage, and ensuring proper installation and clean oil, you can effectively prevent thrust washer-related issues, extend the engine’s lifespan, and improve overall equipment performance.