This shop manual covers the proper disassembly, inspection, rework, assembly, and installation of the 1806077C91 turbocharger found on the Navistar DT473 engines Written by an industry professional, this book contains full-color photos, diagrams, torque specs, and best practices. Repairing your vehicle's turbocharger is easy and cost effective-if you know how This shop manual covers Garrett Honeywell T04B25 409770-0020, 409770-9020, 409770-5020, 409770-20 Turbochargers