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.
Gross Power - SAE J1995 74.3 HP
Rated Operating Capacities - 35% Tipping Load 2220 lb
Operating Weight 10095 lb
Net Power - SAE 1349 72.9 HP
Bore 3.7in
Displacement 203in³
Engine Model Cat C3.3B DIT (turbo)
Gross Power 74.3HP
Gross Power - SAE J1995 74.3HP
Net Power 72.9HP
Net Power - ISO 9249 73.7HP
Net Power - SAE 1349 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.
Peak Torque - 1,500 rpm - SAE J1995 195ft·lbf
Stroke 4.7in
Breakout Force - Tilt Cylinder 7285lb
Ground Contact Area - With 450 mm/17.7 in Track 2272in²
Ground Pressure - With 450 mm/17.7 in Track 4.4psi
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 Capacities - 35% Tipping Load 2220lb
Rated Operating Capacities - 50% Tipping Load 3170lb
Rated Operating Capacity with Optional Counterweight 3390lb
Tipping Load 6345lb
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
Operating Weight 10095lb
Bucket Pin Height - Carry Position 7.8in
Bucket Pin Height - Maximum Lift 124.9in
Clearance at Maximum Lift and Dump 97.8in
Departure Angle 32°
Ground Clearance 8.9in
Height - Top of Cab 83.2in
Length - Track on Ground 64.2in
Length - With Bucket on Ground 146.2in
Length - Without Bucket 117.9in
Maximum Dump Angle 39°
Maximum Overall Height 159.5in
Maximum Reach - With Arms Parallel to Ground 54in
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
Overall Length - Track 83.8in
Rack Back Angle - Maximum Height 84°
Reach - Maximum Lift/Dump 22.6in
Turning Radius from Center - Bucket 88.8in
Turning Radius from Center - Coupler 55.5in
Turning Radius from Center - Machine Rear 70.7in
Vehicle Width (450 mm/17.7 in tracks) 78in
FOPS ISO 3449:2005 Level I
ROPS ISO 3471:2008
Inside Cab** 83dB(A)
Note (1) Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
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
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.
Outside Cab*** 103dB(A)
Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated) 76HP
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow 32gal/min
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure 4061HP
Hydraulic Flow - Standard - Hydraulic Power (Calculated) 44HP
Hydraulic Flow - Standard - Loader Hydraulic Flow 23psi
Hydraulic Flow - Standard - Loader Hydraulic Pressure 3335psi
Travel Speed - Forward or Reverse - One Speed 4.5mile/h
Travel Speed - Forward or Reverse - Two Speed 8.3mile/h
Cooling System 3.7gal (US)
Engine Crankcase 3gal (US)
Fuel Tank 27.7gal (US)
Hydraulic System 13.7gal (US)
Hydraulic Tank 10.3gal (US)
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.
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
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
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)
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
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
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)
