Diagnostic Manual for CLAAS AXION TRACTORS (Models 810-850) with DPS Tier III engine, written in English. It details the operation and diagnosis of the Common Rail Electronic Injection System, the EGR system, the Variable Geometry Turbocompressor (VGT) and the starting and cooling systems. Includes power tables, tightening pairs, circuit diagrams and pressure check procedures. It also covers the "" Hexashift "transmission management.