279D3 Compact Track Loader

The Cat® 279D3 Compact Track Loader, with its radial lift design, delivers impressive mid-lift reach and excellent digging performance with outstanding drawbar power. Its standard, suspended undercarriage system provides superior traction, flotation, stability and speed to work in a wide range of applications and underfoot conditions.

Quiet and Comfortable

The industry leading sealed and pressurized cab option provides the operator with a cleaner and quieter operating environment with excellent work tool visibility. Continuing the industry leading trend, the D3 Series also includes as standard, seat mounted adjustable joystick controls for operator comfort.

Maximum Performance

High performance power train provides maximum performance and production capability through the Electronic Torque Management system, standard two speed travel and an electronic hand/foot throttle with decel pedal capability.

Making Your Job Easier

Cat® “Intelligent Leveling” system provides industry leading technology, integration, and available features such as dual direction self level, work tool return to dig, and work tool positioner.

A Smooth Ride

A standard, fully independent torsion axle suspension combined with the optional Speed Sensitive Ride Control system improves operation on rough terrain, enabling better load retention, increased productivity and greater operator comfort.

Optimized Machine Capability

Maximize machine capability and control with the available Advanced Display, providing on-screen adjustments for implement response, hystat response and creep control. Also features multi-language functionality with customizable layouts, security system and rearview camera.

Standard Equipment

ELECTRICAL
  • 12 volt Electrical System
  • 80 ampere Alternator
  • Ignition Key Start/Stop Switch
  • Lights: Gauge Backlighting, Two Rear Tail Lights, Two Rear Halogen Working Lights, Two Adjustable Front Halogen Lights, Dome Light
  • Backup Alarm
  • Heavy Duty Battery, 850 CCA
OPERATOR ENVIRONMENT
  • Advanced Display with Rearview Camera: Full Color, 127 mm (5 in) LCD screen; Advanced Multi-operator Security System; On-screen Adjustments for Implement Response, Hystat Response, and Creep Control
  • Gauges: Fuel Level, Hour Meter
  • Operator Warning System Indicators: Air Filter Restriction, Alternator Output, Armrest Raised/Operator Out of Seat, Engine Coolant Temperature, Engine Oil Pressure, Glow Plug Activation, Hydraulic Filter Restriction, Hydraulic Oil Temperature, Park Brake Engaged, Engine Emission System
  • Adjustable Vinyl Seat
  • Fold In Ergonomic Contoured Armrest
  • Control Interlock System, when operator leaves seat or armrest raised: Hydraulic System Disables, Hydrostatic Transmission Disables, Parking Brake Engages
  • ROPS Cab, Open, Tilt Up
  • FOPS, Level I
  • Top and Rear Windows
  • Floor Mat
  • Interior Rearview Mirror
  • 12 volt Electric Socket
  • Horn
  • Hand (Dial) Throttle, Electronic
  • Adjustable Joystick Controls
  • Anti-theft Security System with 6-button Keypad
  • Storage Compartment with Netting
POWER TRAIN
  • Cat C3.3B, Turbo Diesel Engine
  • Air Cleaner, Dual Element, Radial Seal
  • S·O·SSM Sampling Valve, Hydraulic Oil
  • Filters, Cartridge-type, Hydraulic
  • Filters, Canister-type, Fuel and Water Separator
  • Radiator/Hydraulic Oil Cooler (side-by-side)
  • Spring Applied, Hydraulically Released, Wet Multi Disc Parking Brakes
  • Hydrostatic Transmission, Two Speed Travel
  • Suspension – Independent Torsion Axles (4)
OTHER
  • Engine Enclosure, Lockable
  • Extended Life Antifreeze, –37° C (–34° F)
  • Machine Tie Down Points (6)
  • Support, Lift Arm
  • Hydraulic Oil Level Sight Gauge
  • Radiator Coolant Level Sight Gauge
  • Radiator, Expansion Bottle
  • Cat ToughGuard™ Hose
  • Auxiliary, Hydraulics, Continuous Flow
  • Heavy Duty, Flat Faced Quick Disconnects with Integrated Pressure Release
  • Split D-Ring to Route Work Tool Hoses Along Side of Left Lift Arm
  • Electrical Outlet, Beacon
  • Belly Pan Cleanout
  • Variable Speed Demand Fan
  • Product Link™ PL243, Cellular
MANDATORY EQUIPMENT
  • Hydraulics, Standard or High Flow XPS
  • Quick Coupler, Mechanical or Powered
  • High Visibility Seat Belt, 50 mm (2 in) or 75 mm (3 in)
  • Steel Imbed Rubber Track – 450 mm (17.7 in)
  • Dual Flange Front Idler/Single Flange Rear Idler or Triple Flange Front/Rear Idlers
  • PERFORMANCE PACKAGES:
    – Performance Package H1: Standard Flow Hydraulics (No Self Level)
    – Performance Package H2: Standard Flow Hydraulics, Dual Direction Electronic Self Level (Raise and Lower), Work Tool Return to Dig, Work Tool Positioner, and Electronic Snubbing (Raise and Lower)
    – Performance Package H3: High Flow XPS, Dual Direction Electronic Self Level (Raise and Lower), Work Tool Return to Dig, Work Tool Positioner, and Electronic Snubbing (Raise and Lower)
  • COMFORT PACKAGES:
    – Open ROPS (C0): Static Seat (No Foot Throttle, Headliner, Heater or Door)
    – Open ROPS (C1): Foot Throttle, Headliner, Cup Holder, and choice of Seat (Mechanical Suspension or High Back, Heated, Air Ride Seat) (No Heater or Door)
    – Enclosed ROPS with Heater (C2): Foot Throttle, Headliner, Heater and Defroster, Side Windows, Cup Holder, Radio Ready, choice of Seat (Mechanical Suspension or High Back, Heated, Air Ride Seat) and Door (Glass or Polycarbonate)
    – Enclosed ROPS with A/C (C3): C2 + Air Conditioner

Additional information

Offering Type

Engine - Gross Power - SAE J1995

55.4 kW ( 74.3 HP )

Operating Specifications - Rated Operating Capacities - 35% Tipping Load

1010 kg ( 2220 lb )

Weights - Operating Weight

4579 kg ( 10095 lb )

Dimensions - Length - Track on Ground

1630 mm ( 64.2 in )

Dimensions - Overall Length - Track

2129 mm ( 83.8 in )

Dimensions - Height - Top of Cab

2113 mm ( 83.2 in )

Dimensions - Ground Clearance

226 mm ( 8.9 in )

Dimensions - Departure Angle

32°

Dimensions - Maximum Dump Angle

39°

Dimensions - Maximum Overall Height

4051 mm ( 159.5 in )

Dimensions - Clearance at Maximum Lift and Dump

2485 mm ( 97.8 in )

Dimensions - Length - With Bucket on Ground

3714 mm ( 146.2 in )

Dimensions - Turning Radius from Center - Machine Rear

1796 mm ( 70.7 in )

Dimensions - Turning Radius from Center - Bucket

2256 mm ( 88.8 in )

Dimensions - Bucket Pin Height - Carry Position

198 mm ( 7.8 in )

Dimensions - Turning Radius from Center - Coupler

1410 mm ( 55.5 in )

Dimensions - Bucket Pin Height - Maximum Lift

3173 mm ( 124.9 in )

Dimensions - Length - Without Bucket

2995 mm ( 117.9 in )

Dimensions - Maximum Reach - With Arms Parallel to Ground

1373 mm ( 54 in )

Dimensions - Rack Back Angle - Maximum Height

84°

Dimensions - Vehicle Width (450 mm/17.7 in tracks)

1981 mm ( 78 in )

Dimensions - Note

Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 450 mm (17.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).

Dimensions - Reach - Maximum Lift/Dump

575 mm ( 22.6 in )

Hydraulic System - Hydraulic Flow - Standard - Loader Hydraulic Pressure

23000 kPa ( 3335 psi )

Hydraulic System - Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow

121 l/min ( 32 gal/min )

Hydraulic System - Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated)

57 kPa ( 76 psi )

Hydraulic System - Hydraulic Flow - Standard - Hydraulic Power (Calculated)

33 kW ( 44 HP )

Hydraulic System - Hydraulic Flow - Standard - Loader Hydraulic Flow

86 kPa ( 23 psi )

Hydraulic System - Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure

28000 kW ( 4061 HP )

Cab - ROPS

ISO 3471:2008

Cab - FOPS

ISO 3449:2005 Level I

Power Train - Travel Speed - Forward or Reverse - Two Speed

13.3 km/h ( 8.3 mile/h )

Power Train - Travel Speed - Forward or Reverse - One Speed

7.2 km/h ( 4.5 mile/h )

Service Refill Capacities - Fuel Tank

105 l ( 27.7 gal (US) )

Service Refill Capacities - Cooling System

14 l ( 3.7 gal (US) )

Service Refill Capacities - Hydraulic System

52 l ( 13.7 gal (US) )

Service Refill Capacities - Engine Crankcase

11 l ( 3 gal (US) )

Service Refill Capacities - Hydraulic Tank

39 l ( 10.3 gal (US) )

Air Conditioning System (if equipped) - Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.

Engine - Net Power - SAE 1349

53.6 kW ( 71.8 HP )

Engine - Displacement

3.3 l ( 203 in³ )

Engine - Bore

94 mm ( 3.7 in )

Engine - Stroke

120 mm ( 4.7 in )

Engine - Net Power ISO 9249†

54.6 kW ( 73.2 HP )

Engine - Net Power

53.6 kW ( 71.8 HP )

Engine - Peak Torque - 1,600 rpm - SAE J1995

265 N·m ( 195 ft·lbf )

Engine Model

Cat C3.3B DIT (turbo)

Engine - Net Power SAE 1349†

54 kW ( 72.4 HP )

Engine - Gross Power

55.4 kW ( 74.3 HP )

Engine - Net Power - ISO 9249

54.1 kW ( 72.6 HP )

Engine - Note

Net power advertised is the power available at the flywheel when the engine is equipped with alternator, air cleaner, muffler/aftertreatment and cooling fan.

Engine - Emissions

†Engine meeting Brazil MAR-1 and China Nonroad Stage III emission standards emits equivalent to U.S. EPA Tier 4 Interim and is offered only for Australia/New Zealand, Brazil, China, French Polynesia, Hong Kong, Macedonia and New Caledonia.

Operating Specifications - Tipping Load

2885 kg ( 6345 lb )

Operating Specifications - Breakout Force - Tilt Cylinder

3304 kg ( 7285 lb )

Operating Specifications - Rated Operating Capacity with Optional Counterweight

1540 kg ( 3390 lb )

Operating Specifications - Rated Operating Capacities - 50% Tipping Load

1445 kg ( 3170 lb )

Operating Specifications - Ground Contact Area - With 450 mm/17.7 in Track

1.47 m² ( 2272 in² )

Operating Specifications - Note

Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 450 mm (17.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).

Operating Specifications - Ground Pressure - With 450 mm/17.7 in Track

30.4 kPa ( 4.4 psi )

Weights - Note

Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 450 mm (17.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).

Noise Level - Outside Cab***

103 dB(A) ( 103 dB(A) )

Noise Level - Inside Cab**

83 dB(A) ( 83 dB(A) )

Noise Level - Note (1)

**The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.

Noise Level - Note (2)

***The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.

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