4.1 10 ENGINE 4.2 18 CLUTCH 4.3 21 GEARBOX 4.5 27 AXLE 4.6 33 BRAKES 4.7 41 STEERING 4.8 44 SUSPENSION AND WHEELS 4.9 50 AUXILIARY UNITS 4.10 55 ELECTRICAL SYSTEM 4.11 70 FITTINGS 4.12 72 PANELS AND FRAMES