3. TECHNICAL INFORMATION
3.1. Engines
The engines P158LE/ P180LE/ P222LE POLUS Series are V-type liquid-cooled 8/ 10/ 12-
cylinder four-stroke Diesel engines with direct injection.
1) Engine block
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) Piston/ Connecting rod/ Crank assembly
The forged crankshaft has screwed-on counterweights. Radial seals with replaceable
wearing rings on crankshaft and flywheel are provided to seal the crankcase penetrations.
The connecting rods are die-forged, diagonally split and can be removed through the top of
the cylinders together with the pistons. Crankshaft and connecting rods run in steel-backed
lead bronze ready-to fit type bearings.
3) Engine timing
Camshaft, oil pump and injection pump are driven by a gear train arranged at the flywheel
end.
4) Valves
The overhead valves are actuated via chilled cast iron tappets, push rods and rocker arms
from the camshaft.
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5
2
6
1
3
4
EA6O3
1. Crankshaft gear
2. Oil pump drive gear
3. Oil pump impeller gears
4. Camshaft drive gear
5. Injection pump drive gear
1. Crankshaft gear
2. Oil pump drive gear
3. Oil pump impeller gears
4. Camshaft drive gear
5. Idler gear
6. Injection pump drive gear
EA6O3001
