Cat® C3.4B Industrial Power Unit

Overview
Minimum Power
74 bhp
Maximum Power
74 bhp
Emissions
Meets U.S. EPA Tier 4 Final, EU Stage IIIB nonroad standards
  • Exterior View

Power Rating

Minimum Power
74 bhp
Maximum Power
74 bhp
Rated Speed
2,200
Minimum Power
74 HP
Maximum Power
74 HP
Rated Speed
2,200
Maximum Torque
235 lb-ft @ 1600 rpm

Emission Standards

Emissions
Meets U.S. EPA Tier 4 Final, EU Stage IIIB nonroad standards
Emissions
U.S. EPA Tier 4 Final

General

Engine Configuration
In-Line 4, 4-Stroke-Cycle Diesel
Bore
99 mm (3.9 in)
Stroke
110 mm (4.3 in)
Displacement
3.4 L (207.5 in³)
Aspiration
Turbocharged
Compression Ratio
17:1
Rotation (from flywheel end)
Counterclockwise
Engine Configuration
In-Line 4, 4-Stroke-Cycle Diesel
Bore
99 mm (3.9 in)
Stroke
110 mm (4.3 in)
Displacement
3.4 L (207.5 in³)
Aspiration
Turbocharged
Compression Ratio
17.0:1
Rotation from Flywheel End
Counterclockwise
Bore
4 in
Stroke
4 in
Displacement
208 in³
Aftertreatment
DOC+SCR

Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)

Diameter
149 mm (5.8 in)
Weight
509 mm (20 in)
Length
509 mm (20 in)

Power Unit Dimensions - Approximate

Length
1242 mm (48.9 in)
Width
705 mm (27.7 in)
Height
957 mm (37.6 in)
Weight - Approximate, Net Dry - Standard Configuration Without Oil, Cooling, Clutch, Compressor, A/C
359 kg (791.5 lb)

Aftertreatment Dimensions - Approximate

Diameter
149 mm (5.8 in)
Weight
509 mm (20 in)
Length
509 mm (20 in)

Power Unit Dimensions

Width
28 in
Weight
792 lb
Height
38 in
Length
49 in

Aftertreatment Dimensions

Length
20 in
Diameter
6 in

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

High Performance

Leading-edge technology provides significant improvements in power, torque, fuel consumption and response. Technology includes single smart wastegated turbo systems, durable high pressure common rail technology, and closed circuit breathing system.

Leading-edge technology provides significant improvements in power, torque, fuel consumption and response. Technology includes single smart wastegated turbo systems, durable high pressure common rail technology, and closed circuit breathing system.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel & Oil

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOS℠ sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
  • Scheduled maintenance, including SOS℠ sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
  • Air Inlet System
    • Standard air cleaners
  • Control System
    • Full electronic control system
    • Fully integrated, engine-mounted electronic control unit
    • Waterproof connectors and wiring looms
    • Flexible and configurable software features and J1939 standard communications I/O
  • Flywheels And Flywheel Housing
    • SAE3 configuration
  • Fuel System
    • Engine-mounted fuel filters
    • Electronic high pressure common rail fuel pump and injectors
  • Lube System
    • Lubricating oil filters and breathers
  • General
    • Cold start capability to -20° C (-4° F)
    • Paint: Caterpillar yellow, with optional colors available at request
  • U.s. Epa Tier 4 Final, Eu Stage Iiib Aftertreatment/clean Emissions Control Equipment
    • Through Flow Diesel Particulate Filter (DPF)
    • Diesel Oxidation Catalyst (DOC)
    • Flex pipe connection kit with straight and 90° options for flexibility
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