Here is the link to Allison Transmission site where you can download the 3000 series owners manual. It is a PDF file/Adobe Reader and it takes some time to download on a dial up connection.
After you download it, don't forget to click on "Save" to save it to your puter.
Allison 3000 Series Owners Manual:
http://www.allisontransmission.com/publ ... 3349EN.jsp
Ron