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Old 06-05-2008
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There's not much to a water pump - it's belt driven and it spins a shaft connected to the impeller inside a housing. It's mechanically very simple. You should replace the impeller and the gasket at least once a year. Do this before you worry about replacing the whole pump. Be sure you get the old gasket completely off. If it's old, it will likely be well adhered to the water pump cover.

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