This is an ORIGINAL Detroit Diesel Allison TG 600 TorqMatic Series Transmissions Service & Parts Manual set (printed in 1977 & 1981).  This manual set has super illustrations as well as having in-depth tear-down, rebuild, troubleshooting, parts identification, and specification information for these classic Allison transmissions.  The covers are in very good shape with NO tears or tatters.  Book is tight and intact with NO loose or missing pages.  The 300+ pages are in very good shape (see pics).  This manual set is in VERY GOOD overall condition.  Thanks for viewing..............Triple K