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Old 07-27-2015, 02:56 PM   #61
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Btw the pump was new in 2006 and there has been no increase in engine temperature.

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Old 07-27-2015, 03:08 PM   #62
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Originally Posted by Loon View Post
Loon here. Cruising the San Juans and have a question. We developed a noise at 1500 rpms which went away at a lower rpm. A wife complained of lukewarm water while showering. I'm positing the fresh water pump is the culprit however no leakage. It is the 6.354M starboard engine,
The impeller is metal and seldom fails, it's usually bearings that doom the pump. if the engine isn't running hot, fluid levels are normal and no leakage from the bearings....My guess would be it's something else.

I only had this happen once with my old hot water tank. Turned out to be a build up of "crud" at the engine hose bibs (where the heater hose from the tank connects to the engine) restricting the coolant flow to/from the water tank. Cleaned it out with a screw driver and battery brush. If you're at a dock where you can take the hoses loose and catch the coolant, you can check that out pretty easy.

PS: Also try blowing through the hose end to make sure there isn't a restriction in the water tanks heat exchanger.

The noise could be another issue that you might want to trouble shoot right away as well.

Larry B
Careful . . .I Have a Generator and I'm not afraid to use it !
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Old 03-31-2016, 05:18 PM   #63
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I had this exact problem - needed a new or rebuilt counter-rotating pump for my Perkins 6.354. I ended up sending it to The Waterpump Man for a rebuild, which he did for $169. The shipping both ways was more than that (because I was in a hurry and had to expedite it both ways.) Service was excellent, and the pump is now like new. Water Pump Man He's in Bloomfield Hills, MI.

There is also a HOME - not the "the" at the beginning - in Indianapolis, who appears to do the same kind of work. There may be people all over who do it, for all I know. But the guy in Bloomfield Hills did great work for me!

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