TM 9--2815--247--34 0004 00--2 THEORY OF OPERATION -- CONTINUED 0004 00 CYLINDERS AND VALVES -- CONTINUED 1 2 3 4 4 5 5 6 6 7 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25²⁶ 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 35 1 Intake valve rocker arm assembly 17 Oil driven gear 33 Fan drive bevel gearshaft 2 Exhaust valve rocker arm assembly 18 Level control oil pump driven impeller 34 Rear fan drive shaft 3 Left camshaft assembly 19 Pressure oil pump driven impeller 35 Fan driven gearshaft 4 Camshaft driven gear 20 Scavenger oil pump driven impeller 36 Fuel metering pump drive gearshaft 5 Camshaft driven gearshaft 21 Make up oil pump driven impeller 37 Fuel metering pump driven shaft gear 6 Camshaft drive shaft 22 Make up oil pump drive shaft 38 Fan drive clutch assembly 7 Camshaft drive bevel gearshaft 23 Oil pump driven impeller shaft 39 Cooling fan adapter 8 Accessory drive gearshaft assembly 24 Make up oil pump drive impeller 40 Rear cooling fan assembly 9 Fuel pump advance assy. 25 Scavenger oil pump drive impeller 41 Fan drive bevel gearshaft 10 Right camshaft assembly 26 Pressure oil pump impeller drive shaft 42 Crankshaft assembly 11 Transmission accessory drive gear 27 Level control oil pump drive impeller 43 Crankshaft torsional vibration damper 12 Accessory drive gear 28 Oil pump drive gear 44 Connecting rod assembly 13 Flywheel 29 Starter idler gear 45 Piston 14 Power take--off driveshaft 30 Starter drive gear 46 Front cooling fan assembly 15 Generator drive gear 31 Starter drive gear 47 Exhaust valve 16 Generator idler gear 32 Front fan drive shaft 48 Intake valve Figure 1--6. Engine Major Working Parts