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3406C Propulsion Engine

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Over 15 Years of Marine 3406C Caterpillar Production

Building on Years of Experience with 3400 Series Products

History of Proven Quality & Reliability

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Power Rating
Power Range 365-400 bhp (272-298 bkW)
Engine Specifications
Speed Range 1800 rpm
Emissions Non-Certified
Aspiration TA
Bore 137.2 mm (5.4 in)
Stroke 165.1 mm (6.5 in)
Displacement 14.6 l (891 inu00b3)
Rotation from Flywheel End Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel
Dimensions & Weights
Length 1454.2 mm (57.3 in)
Dry Weight - Approximate 1325 kg (2921 lb)
Height 1278.5 mm (50.3 in)
Width 913.5 mm (36 in)

Standard Equipment

  • Exhaust System
    • Manifold & Turbocharger, watercooled
    • 152 mm (6 in) round flanged outlet on 1800 rpm
    • Elbow, dry, 152 mm (6 in) on 1800 rpm
    • Flange, dry, 152 mm (6 in) on 1800 rpm;
  • Air Inlet System
    • Aftercooler core, corrosion resistant coated (air side)
    • Air cleaner, Regular duty, dry, panel type with service indicator.
    • Turbocharger inlet, 152 mm (6 in) OD straight connection
  • Control System
    • Governor, Hydra-mechanica
  • Flywheels & Flywheel Housings
    • Flywheel, SAE No. 14
    • Flywheel housing, SAE No. 1
    • SAE standard rotation
  • Fuel System
    • Fuel filter, Spin on, LH
    • Fuel transfer pump
    • Fuel priming pump
    • Flexible fuel lines
    • Fuel ratio control
  • Instrumentation
    • Instrument panel, LH
    • Engine Oil Pressure gauge
    • Engine water temperature gauge
    • Fuel pressure gauge
  • Lube System
    • Crankcase breather
    • Oil filter, Spin on, RH
    • Oil filler in valve cover and dipstick, RH
    • Oil pump, sump, manual
  • Mounting System
    • Front Support
  • Cooling System
    • Oil cooler
    • Thermostats and housing, Full open temperature 92 C (198 F)
    • Jacket water pump, gear driven, centrifugal
    • Auxiliary sea water pump, gear driven, rubber impeller, rotary, self priming (heat exchanger engines only)
    • Expansion tank
    • Marine transmission oil cooler
  • Starting/Charging System
    • Charging alternator
    • Electric starting motor, LH
  • General
    • Vibration damper
    • Lifting eyes
    • NOTE: Engines for keel cooling do NOT include keel cooler. Engines for heat exchanger cooling do NOT include heat exchanger.

Optional Equipment

  • EXHAUST SYSTEM
    • Elbow
    • Rain Cap
    • Flexible Fitting
    • Muffler
    • Duplex fuel filters
    • Water seperator
  • CONTROL SYSTEM
    • Engine mounted controls
  • COOLING SYSTEM
    • Head exchanger – shipped loose
    • Dry charge coolant conditioner
  • LUBE SYSTEM
    • Sump Pump
  • STARTING SYSTEM
    • Ether starting aid
    • Battery Sets – 24 Volt – Dry
  • PACKING
    • Engine Protective Cover
    • Storage Preservation
    • Export Packing
  • GENERAL
    • Tool set

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