- 51,147 lbs Operating Weight
- 237 @2100 rpm Horsepower
- 6.1 yd³ Blade Capacity
D71 intelligent Machine Control
How do you make one of the industry’s most capable, dependable dozers even better? Make it smart. The industry’s newest slant-nosed, intelligent HST dozer features the latest iMC 2.0 capabilities, and patent-pending proactive dozing control with the ability to operate automatically 100% of the time.
Outstanding visibility for your operators
Outstanding visibility to the cutting edges and excellent balance and maneuverability with a super-slant nose cab-forward design.
Smooth shifting and control
Smooth, powerful turns with hydrostatic steering. Fully electronic control provides complete automatic shifting and allows for Quick-Shift or variable speed selection.
Choose the right mode for the job
In P mode, the engine outputs its full power to help your operator perform heavy-load work. It automatically increases engine speed for maximum power when load increases. H mode increases engine high idle speed, suitable for power-intensive work.
Versatile and productive adjustable blade
Flexibility to adapt to various situations and the ability to be efficient and productive regardless of the terrain with a versatile 6-way PAT (power angle tilt) blade pitch system.
Easy-access maintenance features
Easy access to the radiator, oil cooler and charge air cooler with swing-up assisted lift system. Hydraulic fan reverses for clearing objects restricting air flow. Rear-mounted single-plane cooling system swings up for fast service.
Designed to wear evenly so the machine provides close to 100% usage of undercarriage components, Komatsu PLUS undercarriage lowers undercarriage maintenance costs by up to 40% over a conventional undercarriage. Strengthened rollers and links increase wear life up to two times.
Ready for low ground pressure needs
To provide your operation with even more versatility and adaptability, the D71 is available with an optional 36-inch wide shoe for low ground pressure applications.
Comfortable, ergonomic controls
Designed for your operator’s comfort and ease of use, the ergonomic, low-effort palm command control system (PCCS) joystick controls all directional movements, including machine travel speed and counter-rotation.
To help maximize operator comfort and connectivity, the D71 comes with standard Bluetooth AM/FM radio and additional AUX and USB connection capability.
||4-cycle, water-cooled, direct injection|
||Komatsu Variable Geometry Turbocharged, air-to-air aftercooled, cooled EGR|
|Number of cylinders||
|Bore x stroke||114 mm x 144.5 mm||4.5" x 5.7"|
|Piston displacement||8.85 ltr||540 in³|
||All-speed and mid-range, electronic|
|SAE J1995 - Gross||179 kW||240 HP|
|ISO 9249 / SAE J1349 - Net||177 kW||237 HP|
| Hydraulic fan at maximum speed
||159 kW 213 HP
|Fan drive type||
||Gear pump, force lubrication|
|*EPA Tier 4 Final emissions certified||
Dual-path, hydrostatic transmission provides extensive speed changes up to 11 km/h 6.8 mph. The variable capacity travel motors allow the operator to select the optimum speed to match specific jobs. Travel control lock lever and neutral switch.
(quick shift mode)*
*Quick shift speeds are adjustable in the monitor
In-shoe mounted axial piston type travel motors with integrated two-stage planetary gear reduction. Compact in-shoe mount can reduce risk of damage by debris. Bolt-on sprocket for easy displacement.
PCCS joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it backward reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation. HST eliminates steering clutches and brakes, providing smooth, powerful turns. Fully electronic control enables smooth operation. The PCCS utilizes shift buttons to increase and decrease speed.
|Minimum turning radius
|D71EX-24/ D71EXi-24||3.1 m||10'2"|
|D71PX-24/ D71PXi-24||3.1 m||10'2"|
|D71PX-24 Wide/ D71PXi-24 Wide||3.3 m||10'10"|
Oscillating-type with equalizer bar and pivot shafts
Track roller frame
Monocoque, large section, durable construction
Rollers and idlers
Lubricated track rollers
Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. Track tension is adjusted easily with grease gun.
|Number of track rollers (each side)
|Type of shoes (standard)
|Number of shoes (each side)
|Shoe width (standard)
|Ground contact area
(with dozer, ROPS cab)
|Length of track on ground
Service Refill Capacities
||14.4 U.S. gal
|Fuel tank||439 ltr||116.0 U.S. gal|
||8.1 U.S. gal|
||40.7 U.S. gal|
|Final drive (each side)
||2.6 U.S. gal|
|DEF tank||20 ltr
||5.3 U.S. gal|
Operating Weight (approximate)
Including ROPS (ISO 3471) cab, U frame for PAT dozer, rated capacity of lubricant, coolant, full fuel tank, operator and standard equipment.
|D71PXi-24||21800 kg||48,061 lb|
Including PAT dozer, ROPS (ISO 3471) cab, operator, standard equipment, rated capacity of lubricant, coolant and full fuel tank.
|D71PX-24||23100 kg||50,927 lb|
|D71PXi-24||23200 kg||51,147 lb|
Closed-Center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
Hydraulic control unit:
All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 235 ltr/min 62.3 U.S. gal/min at rated engine rpm.
|Relief valve setting||28.8 MPa 294 kg/cm²||4,177 psi|
|| Double-acting, piston type
|(Number of cylinders)||Bore
| Blade lift (2)
| Blade tilt (1)
| Blade angle (2)
|Hydraulic oil capacity (refill):
| Power angle tilt dozer
||40.7 U.S. gal
|3-spool control valve for Power Angle Tilt dozer
||Raise, hold, lower, and float|
||Right, hold, and left|
||Right, hold, and left|
|Additional control valve required for ripper
| Ripper lift
||Raise, hold, and lower
- Air cleaner, double element with dust indicator
- Air suspension seat with operator presence sensing system
- Alternator, 24 V/90 A
- Backup alarm
- Batteries, 2 x 12 V/140 Ah
- Closed engine hood
- Color monitor, Liquid Crystal Display (LCD)
- Decelerator/brake pedal (Single pedal)
- Engine intake precleaner (Auto eject)
- Expansion tank
- Fuel prefilter with water separator
- High mount foot rests
- Hitch type drawbar
- Hydraulically driven cooling fan with clean mode
- Komatsu Diesel Particulate Filter (KDPF) with curved exhaust pipe
- Locks, filler caps and covers
- Radiator mask, swing up
- Rear view monitor system
- Starting motor, 11 kW/24 V
- Steering system: HST system
- Track roller guard, center and end section
- Track shoe assembly
—Parallel Link Undercarriage System (PLUS) link
610 mm 24" single grouser shoe (EX)
760 mm 30" single grouser shoe (PX)
915 mm 36" single grouser shoe (PX wide)
Oil pan and hydraulic pumps
- Air conditioner (A/C)
- Cab accessories
—12 V x 2 power supply
—Rear view mirror
- Front pull hook
- LED lights
- Multifunction Audio
- Work lamps (Front 4, rear 2)
* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets ROPS (ISO 3471) and FOPS (ISO 3449) Level 2 standards
- Hydraulics for ripper (EXI)
- Long drawbar
- Scoop holder
- Tool kit
- Track roller guard, full length
Multi-shank ripper (for D65EX/WX)
- Weight (including hydraulic control unit): 1780 kg 3,924 lb
- Beam length: 2170 mm 7'1"
- Maximum lift above ground: 640 mm 2'1"
- Maximum digging depth: 580 mm 1'11"