Manufactured By: Caterpillar

Category: Compact Track Loader

Model Number: 279D

TypeCompact Track Loader
Standard Flow23 GPM
High Flow32 GPM
Pressure3335PSI PSI
Hydraulic HP Standard Flow44. HP
Hydraulic HP High Flow62.3 HP
Engine HP72. HP
Width78 in.
Lift Capacity at 35%2054.5 lb.
Lift Capacity at 50%2935 lb.
Operating Weight9893 lb.
Tire Size


FOPSISO 3449:2005 Level I
FOPS Level IIISO 3449:2005 Level II
ROPSISO 3471:2008


Bucket Pin Height – Carry Position7.8 in (20 cm)
Bucket Pin Height – Maximum Lift10.5 ft (3 m)
Clearance at Max Lift and Dump8.2 ft (3 m)
Clearance at Maximum Lift and Dump97.8 in (248 cm)
Departure Angle32 °
Dump angle39 °
Ground Clearance8.9 in (23 cm)
Height – Top of Cab7 ft (2 m)
Length – Track on Ground64.2 in (163 cm)
Length – with Bucket12.2 ft (4 m)
Length – With Bucket on Ground146.2 in (371 cm)
Length – Without Bucket117.9 in (299 cm)
Length – without Bucket9.9 ft (3 m)
Maximum Dump Angle39 °
Maximum Overall Height159.5 in (405 cm)
Maximum Reach – With Arms Parallel to Ground54 in (137 cm)
Overall Height13.2 ft (4 m)
Overall Length – Track83.8 in (213 cm)
Overall Track Length7 ft (2 m)
Rack Back Angle – Maximum Height84 °
Reach – Maximum Lift/Dump22.6 in (57 cm)
Reach at Max Lift and Dump1.9 ft (1 m)
Turning Radius from Center – Bucket88.8 in (226 cm)
Turning Radius from Center – Coupler55.5 in (141 cm)
Turning Radius from Center – machine rear70.8 in (180 cm)
Turning Radius from Center – Machine Rear70.7 in (180 cm)
Vehicle Width (400 mm/15.7 in tracks)76 in (193 cm)
Vehicle Width (450 mm/17.7 in tracks)78 in (198 cm)
Width Over Tracks6.4 ft (2 m)


Bore3.7 in (9 cm)
Displacement203 cu in (0 m)
Engine MakeDIT
Engine ModelCat C3.3B DIT (turbo)
Gross Power74.3 hp (55 kw)
Gross Power – SAE J199574.3 hp (55 kw)
Net Power72.9 hp (54 kw)
Net Power – ISO 924973.7 hp (55 kw)
Net Power – SAE 134972.9 hp (54 kw)
Peak Torque195.5 lbs/ft
Peak Torque – 1,500 rpm – SAE J1995195 ft lbs (89 kg)
Stroke4.7 in (12 cm)
Torque Measured @1500 rpm

Hydraulic System

Hydraulic Flow – High Flow XPS – Hydraulic Power (Calculated)76 hp (57 kw)
Hydraulic Flow – High Flow XPS – Maximum Loader Hydraulic Flow32 gal/min (121 l/min)
Hydraulic Flow – Standard – Hydraulic Power (Calculated)44 hp (33 kw)
Hydraulic Flow – Standard – Loader Hydraulic Pressure3335 psi
Pump Flow22.8 gal/min (86 l/min)
Relief Valve Pressure3335.9 psi


Breakout Force7284.1 lbs (3,304 kg)
Operating Load Rating2055 lbs (932 kg)
Operating Width76 in (193 cm)
Tipping Load5871 lbs (2,663 kg)

Noise Level

Inside Cab*83 dB(A)
Note (1)Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
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**103 dB(A)

Operating Specifications

Alternator Supplied Amperage80 A
Breakout Force – Tilt Cylinder7285 lbs (3,305 kg)
Cooling System Fluid Capacity3.7 gal (14 l)
Fuel Capacity24.9 gal (94 l)
Ground Contact Area – With 400 mm/15.7 in Track2015 cu in (0 m)
Ground Contact Area – With 450 mm/17.7 in Track2272 cu in (0 m)
Ground Pressure – With 400 mm/15.7 in Track4.9 psi
Ground Pressure – With 450 mm/17.7 in Track4.4 psi
Hydraulic System Fluid Capacity13.8 gal (52 l)
Max Speed – high range7.1 mph (11 kph)
Max Speed – low range4.5 mph (7 kph)
Operating Voltage12 V V
Operating Weight9892.2 lbs (4,487 kg)
Rated Operating Capacities – 35% Tipping Load2055 lbs (932 kg)
Rated Operating Capacities – 50% Tipping Load2935 lbs (1,331 kg)
Rated Operating Capacity with Optional Counterweight3185 lbs (1,445 kg)
Tipping Load5870 lbs (2,663 kg)

Power Train

Travel Speed – Forward or Reverse – One Speed4.5 mph (7 kph)
Travel Speed – Forward or Reverse – Two Speed7 mph (11 kph)

Service Refill Capacities

Cooling System3.7 gal (14 l)
Engine Crankcase3 gal (11 l)
Fuel Tank24.8 gal (94 l)
Hydraulic System13.7 gal (52 l)
Hydraulic Tank10.3 gal (39 l)


Ground Contact Area2015.1 cu in (0 m)
Ground Pressure5 psi
Length of Track on Ground5.4 ft (2 m)


Operating Weight9893 lbs (4,487 kg)