2.2.2. Engine block z The cylinder block is a single piece of alloy cast iron. To increase its stiffness, it is extended to a level below the crankshaft center line. The engine has replaceable wet cylinder liners and individual cylinder heads with strung-in valve seat rings and replaceable valve guides. 2.2.3. Piston / Connecting rod / Crank assembly z The forged crankshaft has screwed-on counterweights. Radial seals with replaceable wearing rings on crankshaft and flywheel are provided to seal the crankcase penetrations. z The connecting rods are die-forged, diagonally split and can be removed through the top of the ready-to fit type bearings. cylinders together with the pistons.
Crankshaft and connecting rods run in steel-backed lead bronze 2.2.4. Engine timing z Camshaft, oil pump and injection pump are driven by a gear train arranged at the flywheel end. 1. Crankshaft gear 2. Oil pump drive gear 3. Oil pump impeller gears 4. Camshaft drive gear 5. Injection pump drive gear 6 5 4 1 2 3 EA6O3001 2.2.5. Valves z The overhead valves are actuated via chilled cast iron tappets, push rods and rocker arms from the camshaft. Technical Information - 21 -