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Old 05-09-2015, 05:22   #31
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Location: Slidell, La.
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Re: Problems with raw water pump, Volvo Penta 2003T.

I like to use Permatex Ultra Gray, (it's hardest), but any of the other colored RTV silicones will work. The application is the important part, all you need is a light smear around the outer circumference of the seal (or on the housing where the seal seats, whichever is easier). Don't get any on the lip of the seal. After the seals are in, when you're installing the shaft and bearings, put a little engine oil on the lips of the seals and the shaft before installation.

The bearings shown in your pictures are open and are lubricated by engine oil circulating in the engine. If you want you could drip a drop or two of oil into each bearing, to avoid a dry start up. If you're reusing the old ones this is not necessary unless you've washed the oil of them out when cleaning things up.

If you're buying new bearings, you may get sealed or shielded brgs that look like this:

If so, they are pre lubricated, and require nothing further.

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Old 05-09-2015, 06:04   #32
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Re: Problems with raw water pump, Volvo Penta 2003T.

Four winds,

While rebuilding the pump, you may consider replacing the original cover with a Speed Seal cover. Changed mine out a few years ago, and it makes the whole process of accessing the impeller a lot easier.
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