The Service Manual just shows a part number for the filter cap O-ring.
It is #570432, which could be anything. I was hoping it would give the size and crossectional thickness.
OH! If you are running one of the older Adobe Readers that has the "search" button which finds every place your search word appears in the document DO NOT UPDATE IT TO READER XI.
I did that last night only to find that the handy "search" feature is gone in the Reader XI.
You know, the search button that will find all 173 places where that word appears in the document, and by clicking on each one you can rapidly jump thru the file to find what your looking for. IT IS GONE dammit.
Not only is it gone, but installing it wiped out my older saved versions of Reader 5 and Reader 8 so I can't even reinstall them.
Talk about a crappy update!