Hi there,
This is not mandatory, if the pump is OK, I leave it alone, but some prefer to do it as it is only a few minutes to unbolt and replace when the belt is removed, this is a personal choice, but if there is any sign of leaking from the vent hole replace it. Here are the instructions in the diagrams below on how to replace the waterpump and timing belt. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Friday, August 7th, 2009 AT 9:42 PM