279D3 Compact Track Loader

At a Glance

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

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Overview

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

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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
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.

Operating Specifications

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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

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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

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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

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ROPS	ISO 3471:2008
FOPS	ISO 3449:2005 Level I

Hydraulic System

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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

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Travel Speed - Forward or Reverse - Two Speed	8.3mile/h
Travel Speed - Forward or Reverse - One Speed	4.5mile/h

Service Refill Capacities

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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)

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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

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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

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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

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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

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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

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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

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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

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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)

Featured Equipment

279D3 Compact Track Loader