Komatsu D39EXi-24 Bulldozer

Komatsu D39EXi-24 Bulldozer

Rated rpm 2200 rpm
Operating Weight 21,848 lb 9910 kg
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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.

D39i-24  

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.

D39i-24  

Enhanced inertial measuring unit (IMU+)

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

D39i-24  

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 stroke3.75" x 4.52"95 mm x 115 mm
Piston displacement199 in³3.26 ltr
Governor
All-speed, electronic
Horsepower:

SAE J1995 - Gross107 HP79 kW
ISO 9249 / SAE J1349 - Net105 HP78 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

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.

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 height1.9"47 mm
Shoe width (standard)20"510 mm
Ground contact area3,707 in²23919 cm²
Ground pressure
(with dozer, ROPS cab)
5.8 psi0.41 kgf/cm² / 40.3 kPa
Track gauge5'4"1620 mm
Length of track on ground7'8"2345 mm

Service Refill Capacities

Coolant9.0 U.S. gal34 ltr
Fuel tank50.2 U.S. gal190 ltr
Engine oil2.9 U.S. gal11 ltr
Hydraulic tank15.8 U.S. gal60 ltr
Final drive (each side)0.9 U.S. gal3.5 ltr
Diesel Exhaust Fluid (DEF)4.1 U.S. gal15.4 ltr

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.

18,342 lb8320 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.

21,848 lb9910 kg

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 setting3,974 psi27.4 MPa / 280 kg/cm²
Hydraulic cylinders
Double-acting, piston type
Number of cylinders:BoreBore
Blade lift / 23"75 mm
Blade tilt / 13.6"90 mm
Blade angle / 23.1"80 mm
Blade pitch
1 adjustable linkage
Hydraulic oil capacity (refill):

Power angle tilt dozer17 U.S. gal64 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

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