USED Caterpillar D6C Tractor SERVICE MANUAL. Applies to the Serial Numbers. The item "Caterpillar (CAT) D6C TRACTOR SERVICE MANUAL SEVERAL S/N NOV 1974" is in sale since Monday, February 11, 2019.This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Heavy Equipment Manuals & Books". The seller is "ecklu-davi" and is located in Philipsburg, Pennsylvania. This item can be shipped worldwide.