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Skid Steer and Compact Track Loaders

279D3

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.

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Overview

Engine

UNITS:

Metric

Imperial

Gross Power - SAE J1995	55.4 kW	74.3 HP
Net Power - SAE 1349	54.4 kW	72.9 HP
Displacement	3.3 cm³	203 in³
Bore	94 mm	3.7 in
Stroke	120 mm	4.7 in
Peak Torque - 1,500 rpm - SAE J1995	265 N·m	195 ft·lbf
Net Power	54.4 kW	72.9 HP
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.	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	55.4 kW	74.3 HP
Engine Model	Cat C3.3B DIT (turbo)	Cat C3.3B DIT (turbo)
Net Power - ISO 9249	54.9 kW	73.7 HP

Operating Specifications

Rated Operating Capacities - 35% Tipping Load	1010 kg	2220 lb
Tipping Load	2885 kg	6345 lb
Breakout Force - Tilt Cylinder	3304 kg	7285 lb
Rated Operating Capacities - 50% Tipping Load	1445 kg	3170 lb
Ground Contact Area - With 450 mm/17.7 in Track	1.47 m²	2272 in²
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 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).
Rated Operating Capacity with Optional Counterweight	1540 kg	3390 lb
Ground Pressure - With 450 mm/17.7 in Track	30.4 kPa	4.4 psi

Weights

Operating Weight	4579 kg	10095 lb
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 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

Length - Track on Ground	1630 mm	64.2 in
Overall Length - Track	2129 mm	83.8 in
Height - Top of Cab	2113 mm	83.2 in
Ground Clearance	226 mm	8.9 in
Departure Angle	32°	32°
Maximum Dump Angle	39°	39°
Bucket Pin Height - Carry Position	198 mm	7.8 in
Turning Radius from Center - Machine Rear	1796 mm	70.7 in
Turning Radius from Center - Coupler	1410 mm	55.5 in
Maximum Overall Height	4051 mm	159.5 in
Maximum Reach - With Arms Parallel to Ground	1373 mm	54 in
Turning Radius from Center - Bucket	2256 mm	88.8 in
Bucket Pin Height - Maximum Lift	3173 mm	124.9 in
Length - With Bucket on Ground	3714 mm	146.2 in
Length - Without Bucket	2995 mm	117.9 in
Reach - Maximum Lift/Dump	575 mm	22.6 in
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 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).
Clearance at Maximum Lift and Dump	2485 mm	97.8 in
Vehicle Width (450 mm/17.7 in tracks)	1981 mm	78 in
Rack Back Angle - Maximum Height	84°	84°

Hydraulic System

Hydraulic Flow - Standard - Loader Hydraulic Pressure	23000 kPa	3335 psi
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow	121 l/min	32 gal/min
Hydraulic Flow - Standard - Loader Hydraulic Flow	86 kPa	23 psi
Hydraulic Flow - Standard - Hydraulic Power (Calculated)	33 kW	44 HP
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure	28000 kW	4061 HP
Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated)	57 kPa	76 HP

Cab

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

Power Train

Travel Speed - Forward or Reverse - Two Speed	13.3 km/h	8.3 mile/h
Travel Speed - Forward or Reverse - One Speed	7.2 km/h	4.5 mile/h

Service Refill Capacities

Hydraulic System	52 l	13.7 gal (US)
Hydraulic Tank	39 l	10.3 gal (US)
Fuel Tank	105 l	27.7 gal (US)
Engine Crankcase	11 l	3 gal (US)
Cooling System	14 l	3.7 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.	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 speeds.	**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.
Outside Cab***	103 dB(A)	103 dB(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.	***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**	83 dB(A)	83 dB(A)
Note (1)	Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.	Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

Features

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.

Sustainability

The Cat® C3.3B engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 7% biodiesel FAME (fatty acid methyl ester). Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Cat® Extended Life Coolant and long-life HYDO Advanced hydraulic fluids not only reduce downtime but help decrease the amount of fluid and filters that are replaced over the life of the machine.
Boost productivity with Cat technologies like work tool positioner, return to dig, and Cat Smart Attachments.
Save fuel and reduce your greenhouse gas emissions with efficiency features such as foot throttle pedal and cooling system demand fan.

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)

Attachments