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Overview

The Cat® C3.4B Industrial Power Unit is offered in ratings ranging from 55.4 bkW (74.3 bhp) @ 2200 rpm. These ratings meet U.S. EPA Tier 4 Final, EU Stage IIIB emission standards. Ratings: 66-86 bkW (88.5-115 bhp) @ 2200-2500 rpm meet U.S. EPA Tier 4 Interim, EU Stage IIIB emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

Power Rating

Units:
Minimum Power 74.0 bhp 55.4 bkW Less
Maximum Power 115.0 bhp 86.0 bkW Less
Frequency 2200-2500 2200-2500 Less

Emission Standards

Emissions U.S. EPA Tier 4 Interim or U.S. EPA Tier 4 Final, EU Stage IIIB U.S. EPA Tier 4 Interim or U.S. EPA Tier 4 Final, EU Stage IIIB Less

General

Engine Configuration In-Line 4, 4-Stroke-Cycle Diesel In-Line 4, 4-Stroke-Cycle Diesel Less
Bore 99 mm (3.9 in) 99 mm (3.9 in) Less
Stroke 110 mm (4.3 in) 110 mm (4.3 in) Less
Displacement 3.4 L (207.5 in³) 3.4 L (207.5 in³) Less
Aspiration Turbocharged (T), Turbocharged Aftercooled (TA) Turbocharged (T), Turbocharged Aftercooled (TA) Less
Compression Ratio 17:1 17:1 Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

Length 1242 mm (48.9 in) 1242 mm (48.9 in) Less
Width 705 mm (27.7 in) 705 mm (27.7 in) Less
Height 957 mm (37.6 in) 957 mm (37.6 in) Less
Weight - Approximate, Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C) 359 kg (791.5 lb) 359 kg (791.5 lb) Less

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

Diameter Wall Flow: 180 mm (7.1 in), Through Flow: 149 mm (5.8 in) (Tier 4 Interim or Tier 4 Final, Stage IIIB) Wall Flow: 180 mm (7.1 in), Through Flow: 149 mm (5.8 in) (Tier 4 Interim or Tier 4 Final, Stage IIIB) Less
Weight Wall Flow: 20 kg (44 lb), Through Flow: 14 kg (30.8 lb) (Tier 4 Interim or Tier 4 Final, Stage IIIB) Wall Flow: 20 kg (44 lb), Through Flow: 14 kg (30.8 lb) (Tier 4 Interim or Tier 4 Final, Stage IIIB) Less

Emissions

Meets U.S. EPA Tier 4 Interim or U.S. EPA Tier 4 Final, EU Stage IIIB emission standards.

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.

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.

Fuel Efficiency

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.

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.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Capable of optimal oil change intervals of 500 hours. Option of service-free through-flow diesel particulate filter (DPF) for Tier 4 Final, Stage IIIB. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.

Quality

Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including S•O•SSM 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

Tier 4 Interim, Stage IIIB Aftertreatment Features


Regeneration. Wall Flow DPF: The transparent system allows the operator to run equipment without any loss in productive time, performance, or power during a continuous regeneration. No operator intervention is required unless the operator wants to prohibit the active regeneration.


Mounting. Multiple off- and on- engine installation options provide customers with simple and flexible solutions for many applications.
Service. Minimum 3000 hour DPF ash service intervals.

Tier 4 Final, Stage IIIB Aftertreatment Features


Regeneration. Through Flow and Wall Flow DPF. The transparent system allows the operator to run equipment without any loss in productive time, performance, or power during a continuous regeneration. No operator intervention is required unless the operator wants to prohibit the active regeneration.


Mounting. Multiple off- and on- engine installation options provide customers with simple and flexible solutions for many applications.
Service. Service-free through-flow DPF for the emissions life of the engine. Minimum 3000 hour DPF ash service intervals.

C3.4B Standard Equipment

Air Inlet System
  • Induction manifolds
  • Exhaust manifolds

Control System
  • Starter motor
  • Alternator
  • Electronic Control Unit
  • Sensors for:

Cooling System
  • Cooling packs

Flywheels and Flywheel Housing
  • Flywheel housings
  • Flywheel and starter rings

Fuel System
  • Fuel filter positions
  • Common rail fuel pump and injectors

Lube System
  • Lubricating oil filters and breathers

General
  • Cold start capability to -20° C (-4° F)
  • Paint: Cat yellow, with optional colors available at request

U.S. EPA Tier 4 Final, EU Stage IIIB Aftertreatment/Clean Emissions Control Equipment
  • For < 56 bkW (<75 bhp) ratings:
  • Diesel Particulate Filter (DPF)
  • Diesel Oxidation Catalyst (DOC)
  • Flex pipe connection kit with straight and 90° options for flexibility

U.S. EPA Tier 4 Interim, EU Stage IIIB Aftertreatment / Clean Emissions Control Equipment
  • For > 56 bkW (>75 bhp) ratings:
  • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)

U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment/ Clean Emissions Control Equipment
  • For >56 bkW (>75 bhp) Ratings:
  • Diesel Oxidation Catalyst (DOC)
  • Selective Catalytic Reduction (SCR)

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
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