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MaK (Caterpillar)

6LM43C

Caterpillar/MaK M43C — Viertakt-Marinediesel, Bohrung 430 x Hub 610 mm, 500–514 rpm, 5400 kW (6M43C) to 16800 kW (16VM43C). Brennstoff: Heavy Fuel Oil (HFO) / Distillate oil. Status: Production since 1998; Market leader in 5–9 MW class; >650 units, >6500 MW cumulative power sold. Verifiziert, Datenblatt verlinkt.

5700.0 kW
Power

Engine Specifications

6
Cylinders
430 mm
Bore
610 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

SFOC (Specific Fuel Oil Consumption) 175–178 g/kWh (HFO optimized)
Lube Oil Consumption 0.6 g/kWh standard; 0.3 g/kWh optional
Engine Type 4-stroke turbocharged intercooled non-reversible with direct injection
Cylinder Block Material Nodular cast iron (Kugelgraphitguss)
Turbocharger Maintenance Interval 15,000 operating hours (inspection/cleaning)
Per-Cylinder Power Output ~700–760 kW/cylinder
Engine Centre Distance 3400 mm
Charge Air Cooler Cast casing with 40% increased base area for turbocharger mounting
power kw 5700
rpm 500
fuel type HFO/MDO
configuration L

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Common failures & inspection points

Heavy fuel oil corrosion of cylinder liners and piston rings due to high sulfur content; nodular cast iron offers improved wear resistance vs. gray iron but req
Turbocharger bearing wear and seizure from contaminated or degraded lube oil; tight clearances vulnerable to sluggish operation or complete seizure if oil break
Fuel injector nozzle carbon deposits and stiction (sticking) from poor fuel quality (high viscosity, low volatility); coke accumulation at nozzle holes can caus
Intake and exhaust rocker arm bearing wear requiring clearance checks every 30,000 hours; bearing surfaces (ball pin, adjusting screw) subject to friction and w
Main running gear (crankshaft, bearings, piston skirts, liners) susceptible to seizure and discoloration from inadequate lube oil separation/filtration; long-st

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #123640 · ✓ still in production