Has anyone replaced their rear seal on the Johnson raw water pump on an Indmar? Mine is leaking and getting the belt wet at times and causing it to squeal for a moment.

I think this is the part I need to order:
http://www.bakesonline.com/detail.aspx?ID=1665

But, I may order IMPELLER KIT (LONG) SERVICE kit while I am going to the trouble and replace everything:
http://store.inboardonline.com/iwwid..._tree?cat=2350

Anyone have any suggestions or instructions on this work?

Thanks