In order to view and//or download the PDF of a patent publication (either the application publication or the issued patent), many steps are required within PAIR. Click on the publications tab. Select the correct link to view the publication text. Press the images button. Press the all pages button. Then download the publication.
How about simplifying things and just putting a PDF (and optionally Word or xml) version of the publication in the image file wrapper. Then someone just needs to click on the image file wrapper and click on the file to be viewed/downloaded (in the correct or desired format, if PDF, Word, xml options are provided).