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Old 01-12-2008, 21:38   #1
MV
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Willard Water Impeller Pump Rebuild

Here are some pictures of yet another impromptu Willard Perkins 4 108 project!
We went on a sail to test the new electrical system a few months back and on the return when we were getting turned around by swells and my bad ability to sail down wind, I started the engine in frustration and heard a bad sound. It did not sound like the engine, but it was associated with the engine. After OTHER intervening repairs, I finally got around to starting the engine again and once again there was that sound. It was a loud howling noise that disappeared after a few minutes. It seemed to be coming from the water pump.

After tears and ripped knuckles, we finally got the pump off. And there was a piece of a curved blade jammed in the housing. The good news is that the piece fit exactly one of the rubber blades, so I know no small pieces got into to engine. You can see the broken blade jammed in the housing. And you can see my frustration in the chewed screw heads

The rust comes from the heat exchanger's (above) aluminum access plate which literally corroded enough to rain coolant down on the impeller.

Michael
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Old 02-12-2008, 07:50   #2
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Congratulations on your successful water pump repair. The photos are also helpful to those of us who have yet to encounter this problem.
Looks like you replaced the whole water pump instead of just the impeller, did you also have damage to the pump body, or could not get the correct impeller, or just being careful ?
-- Have a g'day sailing mate ;-)
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Old 02-12-2008, 08:33   #3
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Quote:
Originally Posted by Chesapeake View Post
Congratulations on your successful water pump repair. The photos are also helpful to those of us who have yet to encounter this problem.
Looks like you replaced the whole water pump instead of just the impeller, did you also have damage to the pump body, or could not get the correct impeller, or just being careful ?
-- Have a g'day sailing mate ;-)
There was no damage to the body, the man who rebuilt the unit cleaned the body, the piping, and the brass cover. The parts that were bad were the bearings and the cam. The shaft was ok he said. A new one would have run 450 while the rebuild was about 240.

But it does look all new!

Michael
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