This shop manual covers the proper disassembly, inspection, rework, assembly, and installation of the 71793975 turbocharger (including the variable vane system) found on the Opel Astra diesel cars. Written by an industry professional, this book contains full-color photos, diagrams, torque specs, and best practices. Repairing your 71793975 turbocharger is easy and cost effective-if you know how