• 22,774 lbs Operating Weight
  • 105 hp @ 2200 rpm Horsepower
  • 2.89 - 3.14 yd³ Blade Capacity

D39PXi-24

Introducing the Next Generation of Machine Control

Intelligent Machine Control machines have the following advantages over dozers with external grade control systems.

  • Innovative
    Automated operation from rough dozing to finish grade.
  • Intelligent
    New dozing mode, load control performance features.
  • Integrated
    Standard factory installed integrated system.
  • No Cables
    No coiled cables between machine and blade.
  • No Climbing
    GNSS antenna and mast removed from blade.
  • No Connections
    No daily connections required between machine and blade.

 

Automated Blade Control, from Rough Dozing to Finish Grade. Straight to Grade.

  1. Blade moves to target surface until load reaches a preset level.
  2. The blade automatically raises to minimize track slip.
  3. Should the load decrease, blade will lower to re-load blade to an optimum level.

 

D39EXi-24 Walkaround  >

Features

Cab Top GNSS Antenna

No blade mounted GNSS antenna(s), cables to worry about damaging with cab top GNSS antenna. Reduced risk of theft due to low visibility as viewed from ground level.

 

Enhanced inertial measuring unit (IMU+)

Chassis mounted IMU and intelligent logic enables accurate grading performance without blade mounted sensors.

Stroke Sensing Hydraulic Cylinders

Robust stroke sensing hydraulic cylinders employ proven Komatsu sensor technologies for accurate finish grade performance. Stroke sensing angle cylinder allows machine control system to know the angle of the blade.

Specifications

Engine

Model Komatsu SAA4D95LE-7*
Type 4-cycle, water-cooled, direct injection
Aspiration Variable flow turbocharged, air-to-air aftercooled
Number of cylinders 4
Bore x stroke 3.75" x 4.52" 95 mm x 115 mm
Piston displacement 199 in³ 3.26 ltr
Governor All-speed, electronic
Horsepower:
SAE J1995 - Gross 107 HP 79 kW
ISO 9249 / SAE J1349 - Net 105 HP 78 kW
Rated rpm 2200 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Final emission certified

Hydraulic System

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 99 ltr/min 26 U.S. gal/min at rated engine rpm.

Relief valve setting 3,974 psi 27.4 MPa / 280 kg/cm²
Hydraulic cylinders
Double-acting, piston type
Number of cylinders: Bore Bore
Blade lift / 2 3" 75 mm
Blade tilt / 1 3.6" 90 mm
Blade angle / 2 3.1" 80 mm
Blade pitch
1 adjustable linkage
Hydraulic oil capacity (refill):

Power angle tilt dozer 17 U.S. gal 64 ltr
Control valves:

3-spool control valve for Power Angle Tilt dozer

Positions:

Blade lift
Raise, hold, lower, and float
Blade tilt
Right, hold, and left
Blade angle
Right, hold, and left
Additional control valve required for ripper

Positions:

Ripper lift
Raise, hold and lower

Hydrostatic Transmission

Dual-path, hydrostatic transmission provides infinite speed changes up to 5.3 km/h / 8.5 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.

Travel speed
(quick shift mode)*
ForwardReverse
1st0–2.1 mph
0–3.4 km/h
0–2.5 mph
0–4.1 km/h
2nd0–3.5 mph
0–5.6 km/h
0–4.0 mph
0–6.5 km/h
3rd0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h
Travel speed
(variable mode)
ForwardReverse
0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h
*Quick shift speeds are adjustable in the monitor.

Operating Weight (APROXIMATE)

Tractor weight: Including ROPS cab, U frame for power angle tilt dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.
20,415 lb 9260 kg
Operating weight: Including Power Angle Tilt dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, hydraulic control unit, coolant, and full fuel tank.
22,774 lb 10330 kg

Service Refill Capacities

Coolant 9.0 U.S. gal 34 ltr
Fuel tank 50.2 U.S. gal 190 ltr
Engine oil 2.9 U.S. gal 11 ltr
Hydraulic tank 15.8 U.S. gal 60 ltr
Final drive (each side) 0.9 U.S. gal 3.5 ltr
Diesel Exhaust Fluid (DEF) 4.1 U.S. gal 15.4 ltr

Undercarriage

Suspension Rigid type
Track roller frame Monocoque, large section, durable construction
Rollers and idlers Lubricated track rollers
Sealed and lubricated track Track tension is easily adjusted with grease gun.
Number of track rollers (each side) 6
Type of shoes (standard) Single grouser
Number of shoes (each side) 39
Grouser height 1.9" 47 mm
Shoe width (standard) 25" 635 mm
Ground contact area 4,616 in² 29782 cm²
Ground pressure
(with dozer, ROPS cab)
5.0 psi 0.35 kgf/cm² / 34.3 kPa
Track gauge 5'11" 1810 mm
Length of track on ground 7'8" 2345 mm

Standard

  • 3D GNSS Intelligent Machine Control
  • Accumulator for Electric Proportional Control (EPC)
  • Air cleaner, dry, double element type with caution lamp on monitor
  • Air conditioner (A/C)
  • Air inlet
  • Alternator, 24 V/85 A
  • Back-up alarm
  • Batteries, large capacity 24 V/92 Ah
  • Cab accessories
    --12 V × 2 power supply

    --Cup holder

    --Rear view mirror

    --Rear view monitor system

    --Crankcase guard and underguard

    --Decelerator/brake pedal (Single pedal)
  • Electronically controlled Hydrostatic Transmission (HST) with quick-shift and variable speed settings
  • Electronic monitor panel with on-board diagnostics
  • Engine hood and side panels
  • Engine, KOMATSU SAA4D95LE-7, gross output of 80 kW 107 HP, direct injection, water-cooled turbocharged, air-to-air aftercooler, cooled EGR, EPA Tier 4 Final and EU Stage 4 emissions certified
  • Fan, hydraulic driven, electronic control
  • Filler cap locks and cover locks
  • Foot rest, high mounted 
  • Fuel pre-filter (10 micron) and fuel filter (2 micron)
  • Grease gun holder
  • High altitude arrangement (No fuel adjustment up to 2300 m)
  • Horn
  • Hydraulics for PAT dozer
  • Intake pipe with precleaner
  • Large high-resolution LCD
  • Lunch box holder
  • Marks and plates, English
  • New Operator Identification System
  • Palm Command Control System (PCCS) with electronic control for travel control
  • Palm Command Control System (PCCS) with EPC for blade control
  • Power turn with counter rotation
  • Pullhook, front
  • Radiator guard grid
  • Radiator reserve tank
  • Real-time DEF monitoring
  • Rear-hinged radiator guard
  • Reverse travel speed presets
  • ROPS cab*
  • Seat belt, 76 mm 3" retractable
  • Seat, air suspension, fabric, heated, low back, headrest
  • Shovel holder
  • Starting motor, 24 V/4.5 kW
  • Self adjusting roller
  • Sprockets, bolt-on
  • Sprocket inner guard
  • Track roller guards, end section
  • Track shoe assembly (PLUS)
  • Heavy-Duty lubricated rotary bushing
  • D39PXi-24: 635 mm 25" single grouser shoe
  • Triple labyrinth final drive
  • Water separator
  • Worklamp (Front 3, rear 2)

Dozer assembly and rear-mounted equipment are not included in base machine price
*Meets ISO 3471, SAE J/ISO 3471 ROPS standards, and ISO 3449 FOPS standard.

Optional

  • Dozer assembly 
  • Hitch 
  • Hydraulics for rear equipment 
  • Track roller guard, full length