. . . . "Handbooks and manuals"@en . . . . . "DS, GS, and depot maintenance manual tractor, full tracked, diesel driven, air droppable (Caterpillar model D6B), FSN 2410-926-0910"@en . "Tractor, full tracked, diesel driven, air droppable (Caterpillar model D6B), FSN 2410-926-0910"@en . . . . .