Valve Keepers-Retainers Failure Analysis
When it comes to failures in your engine, you want to know what's going on and what caused it right away so you can make sure the problem gets fixed. We're here to help!
We've talked about different failures affecting your diesel engine valves and its corresponding components. Now, we're going to dive into the valve keepers/retainers.
How can these components fail? What causes them to fail? We've got an in-depth failure analysis to help you figure out what's going wrong with your diesel engine.
In the market for new valve train components or other parts for your diesel engine? Our ASE Certified Technicians are ready to help you find exactly what you need!
Valve failure caused by impact loading
The following picture shows returned materials. The yellow arrow pointing at the valve retainers show they are undamaged. The rotators indicated by the blue arrow were inspected and function properly showing no damage. The two valves in the foreground show no galling in the stem indicating they did not seize in the valve guide. The Green arrow points to the broken valve, note location of break.
Conclusion: Since both valves are bent in a similar manner, the piston hit the valves and not some random piece of foreign material. The root cause of failure is impact loading.