279D3 Compact Track Loader

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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.

ID Number M22830
Model 279D3
Model Year 2021
Serial Number 0RB903297
Location IN TRANSIT
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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
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, 400 mm (15.7 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, 400 mm (15.7 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, 400 mm (15.7 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

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

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.

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 PL240, 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 – 400 mm (15.7 in) or 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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