I recently got a couple of spiral bound books from Longhorn Int. in Temple Tx. that cover features,descriptions,and unique diagnostics and repair procedures.The one for the model year 2007 Maxxforce 7 is part# CGE-639 and the one that covers the model years 2007-2009 Maxxforce DT,Maxx 9,and Maxx 10 is part# TMT-120802.There is a weath of information in these books.