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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.

Engine

Gross Power - SAE J1995

74.3HP

Net Power - SAE 1349

72.9HP

Displacement

203in³

Bore

3.7in

Stroke

4.7in

Peak Torque - 1,500 rpm - SAE J1995

195ft·lbf

Net Power

72.9HP

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.

Gross Power

74.3HP

Engine Model

Cat C3.3B DIT (turbo)

Net Power - ISO 9249

73.7HP

Operating Specifications

Rated Operating Capacities - 35% Tipping Load

2220lb

Tipping Load

6345lb

Breakout Force - Tilt Cylinder

7285lb

Rated Operating Capacities - 50% Tipping Load

3170lb

Ground Contact Area - With 450 mm/17.7 in Track

2272in²

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 hydr

Rated Operating Capacity with Optional Counterweight

3390lb

Ground Pressure - With 450 mm/17.7 in Track

4.4psi

Weights

Operating Weight

10095lb

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 hydr

Dimensions

Length - Track on Ground

64.2in

Overall Length - Track

83.8in

Height - Top of Cab

83.2in

Ground Clearance

8.9in

Departure Angle

32°

Maximum Dump Angle

39°

Bucket Pin Height - Carry Position

7.8in

Turning Radius from Center - Machine Rear

70.7in

Turning Radius from Center - Coupler

55.5in

Maximum Overall Height

159.5in

Maximum Reach - With Arms Parallel to Ground

54in

Turning Radius from Center - Bucket

88.8in

Bucket Pin Height - Maximum Lift

124.9in

Length - With Bucket on Ground

146.2in

Length - Without Bucket

117.9in

Reach - Maximum Lift/Dump

22.6in

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 hydr

Clearance at Maximum Lift and Dump

97.8in

Vehicle Width (450 mm/17.7 in tracks)

78in

Rack Back Angle - Maximum Height

84°

Cab

ROPS

ISO 3471:2008

FOPS

ISO 3449:2005 Level I

Service Refill Capacities

Hydraulic System

13.7gal (US)

Hydraulic Tank

10.3gal (US)

Fuel Tank

27.7gal (US)

Engine Crankcase

3gal (US)

Cooling System

3.7gal (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.

Noise Level

Note (2)

**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 spe

Outside Cab***

103dB(A)

Note (3)

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

Inside Cab**

83dB(A)

Note (1)

Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

Hydraulic System

Hydraulic Flow - Standard - Loader Hydraulic Pressure

3335psi

Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow

32gal/min

Hydraulic Flow - Standard - Loader Hydraulic Flow

23psi

Hydraulic Flow - Standard - Hydraulic Power (Calculated)

44HP

Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure

4061HP

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

76HP

Power Train

Travel Speed - Forward or Reverse - Two Speed

8.3mile/h

Travel Speed - Forward or Reverse - One Speed

4.5mile/h

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, Meeting Tier 4 Final and Stage V Emission Standards
    • 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

Optional Equipment:

  • Optional Equipment
    • Hand-Foot Style Controls
    • External Counterweights
    • Beacon, Rotating
    • Engine Block Heater – 120V
    • Oil, Hydraulic, Cold Operation
    • Paint, Custom
    • Heavy Duty Battery, 1,000 CCA
    • Product Link PL641, Cellular
    • Speed Sensitive Ride Control
    • Bluetooth® Radio with Microphone (AM/FM/Weather Band Receiver with USB and Auxiliary Input Jack)

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