catalinajack
Guru
This past weekend I experienced an engine over-temp situation and had to return to the dock on one engine. Looking at impeller integrity first, I removed the cover and saw that the vanes at the face of the impeller were intact so I did not think that the impeller had failed. Next I pulled the entire pump (not difficult) thinking that the pump had failed. After the pump was off I removed the impeller and found that the vanes on the internal half were gone. I could not see that when the pump was on the engine as the pump was on the outboard side of this engine (Lehman 120, starboard side). Given that I replaced the impeller in March, 2017 and it had just 10 hours use I am perplexed as to why this impeller failed so soon. I checked the part numbers. I had used the correct impeller.
So, anyone have any ideas on what could have caused the premature failure? Is there a way to mess up the installation such that early failure is likely? The cover plate is a Speed Seal.
So, anyone have any ideas on what could have caused the premature failure? Is there a way to mess up the installation such that early failure is likely? The cover plate is a Speed Seal.