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4.2.4 Running gear
1 Flywheel
2 Crankshaft
3 Piston
4 Conrod
5 Vibration damper
6 Crankshaft gear
7 Crankshaft counterweight
8 Ring gear
KS = Driving end
Running gear
The running gear is installed in the crankcase. It is supported in sleeve bearings and locked in axial direction.
Engine oil from the crankcase is used to lubricate the bearings, vibration damper, and pistons. Carefully
matched components ensure maximum performance and minimum wear.
Technical data
Piston
• Aluminum solid-skirt piston with integrated cooling duct
• Two compression rings, one oil-scraper ring
• Piston cooling via oil spray nozzles
Conrod
• Forged
• Machined in one piece, providing high level of rigidity and optimum weight
• Split bearing shells
• Upper conrod bearing lubricated by return flow of piston cooling oil
• Lower conrod bearing lubricated via crankshaft
MS15065/01E 2019-01
| Series 4000 Engines | 47
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