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Old 08-09-2017, 06:02 AM   #10
angus99
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City: Signal Mtn., TN
Vessel Name: Stella Maris
Vessel Model: Defever 44
Join Date: Feb 2012
Posts: 2,742
Quote:
Originally Posted by Ski in NC View Post
Maybe we have some chemists here that could chime in, but I think these things age even when not in use. I don't like putting in impellers that are of unknown age. Nothing wrong with keeping a few as spares, but if I am going to put one in as a maintenance step, I buy a new one.
This.

When we bought our boat, we had to move her from Florida to the upper Chesapeake. I replaced the impellers with some spares that looked fine to my inexperienced eyes. After we arrived I decided to change out some weeping engine hoses and found a lot of impeller pieces. Below is what the impellers looked like. What amazed me most is that the Lehmans ran 750 miles at cruising speed without overheating with a few vanes on each impeller and lots of rubber pieces clogging up the works. From now on, it's new impellers on a regular schedule.
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