• 108,280 - 108,280 lbs Operating Weight
  • 527 @1800 rpm Horsepower
  • 10.5 - 13.8 yd³ Bucket Capacity

WD600-6

High productivity is the story of the WD600-6 wheeled dozer. The operator has two engine power modes, load sensing hydraulics and a modulated clutch system to harness the 527 horsepower to maximize production when moving mass quantities of soil, coal, chips, slurry or whatever gets in the way.

Features

Advanced Joystick Steering System

AJSS is a feedback steering system which has been incorporated to allow steering and forward and reverse selection to be controlled by wrist and finger control. With the feedback function added, the machine steering angle is defined exactly the same as the lever tilt angle.

Built-in Blade Tilt Piping

Blade tilt piping is built into the straight frame to protect it from damage.

Dual-Mode Engine Power Select System

This wheel dozer offers two selectable operating modes — E and P. The operator can adjust the machine’s performance with the selection switch.

 

E Mode:

Provides maximum fuel efficiency for general dozing.

 

P Mode:

Provides maximum power output for hard dozing operation or hillclimb.

High-Rigidity Frames

Front and rear frames are designed to work in the toughest applications and provide high rigidity for the power train and dozer equipment. The high-rigidity frames, together with the reinforced dozer linkage, reduce dozing stress and shock.

Lock-up Torque Converter

The Komatsu designed lock-up torque converter provides increased production efficiency, reduced cycle times and optimum fuel savings in long pushes and hillclimb operations. This standard feature allows the operator to activate the system with a switch located on the right-side control panel.

Low Fuel Consumption

The fuel consumption is greatly reduced because of the low noise, high-torque engine, the variable piston pumps for the Closed-center Load Sensing System (CLSS), and the large capacity torque converter. This matched combination provides maximum efficiency in the low-speed range.

Modulated Clutch System

The Modulated Clutch System controls the tractive effort with the left brake pedal from 100% to 20% of the converter output torque.


• Useful for smooth speed reduction when approaching the end of dozing


• Easy control of tire slippage


• Reduces shocks in shifting from forward to reverse

Variable Traction Control System

In limited traction situations where the operator would like to avoid tire slippage (in loose material or muddy ground conditions) the operator can reduce slippage by activating the Variable Traction Control System. This feature is activated in the forward first (F1) gear range. The optimum rim pull (F1) is controlled by adjusting the control knob counterclockwise from 100% to 20%.

Wet multi-disc brakes and fully hydraulic braking system

Wet multi-disc brakes and fully hydraulic braking system mean lower maintenance costs and high reliability. Wet disc brakes are fully sealed. Contaminants are kept out, reducing wear and maintenance. Brakes require no adjustments for wear. The new parking brake is also adjustment-free, wet multi-disc for high reliability and long life. Added reliability is designed into the braking system by the use of two independent hydraulic circuits, providing hydraulic backup. Fully hydraulic brakes mean no air systems to bleed, or the condensation of water in the system that can lead to contamination, corrosion, and freezing.

Specifications

Axles and Final Drives

Drive system Four-wheel drive
Front Fixed, semi-floating
Rear Center-pin support, semi-floating, 26° total oscillation
Reduction gear Spiral bevel gear
Differential gear Conventional type
Final reduction gear Planetary gear, single reduction

Brakes

Service brakes Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake Wet disc brake
Emergency brake Parking brake is commonly used

Engine

Model Komatsu SAA6D170E-5*
Type Water-cooled, 4-cycle
Aspiration Turbocharged, aftercooled, cooled EGR
Number of cylinders 6
Bore x stroke 6.69" x 6.69" 170 mm x 170 mm
Piston displacement 1,413 in³ 23.15 ltr
Governor all-speed, electronic
Horsepower:
SAE J1995 - Gross 530 HP 396 kW
ISO 9249/SAE J1349 - Net 527 HP 393 kW
Hydraulic fan at maximum speed - Net 502 HP 374 kW
Rated rpm 1800 rpm
Fan drive method for radiator cooling Hydraulic
Fuel system Direct injection
Lubrication system:
Method Gear pump, force-lubrication
Filter Full-flow type
Air cleaner Dry type with double elements and dust evacuator, plus dust indicator
*EPA Tier 3 and EU stage 3A emissions certified.

Hydraulic System

Steering system:
Hydraulic pump Piston type
Capacity at rated rpm 43.1 U.S. gal/min 163 ltr/min
Relief valve setting 4,980 psi 34.3 MPa
350 kgf/cm²
Hydraulic cylinders:
Type Double-acting, piston
Number of cylinders 2
Bore x stroke 5.1" x 20" 130 mm x 510 mm
Loader control:
Hydraulic pump Piston type
Capacity at rated rpm 47.6 + 47.6 U.S. gal/min 180 + 180 ltr/min
Relief valve setting 3,560 psi 24.5 MPa 250 kgf/cm²
Hydraulic cylinders:
Type Double-acting, piston
Number of cylinders: Bore x Stroke: Bore x Stroke:
Blade lift - 1 6.3" x 42.5" 160 mm x 1080 mm
Tilt and pitch - 2 7.0" x 9.3" 180 mm x 237 mm
Control valve 3-spool type
Control positions:
Blade lift Raise, hold, lower, and float
Tilt and pitch Tilt-left, tilt-right, hold, pitch forward and back
Hydraulic cycle time:
Raise 2.0 sec
Lower 1.3 sec
Tilt (left / right) 0.8 / 1.1 sec
Pitch (front / rear)mage 2.1 / 1.6 sec

Service Refill Capacities

Cooling system 38.8 U.S. gal 147 ltr
Fuel tank 189.7 U.S. gal 718 ltr
Engine 22.7 U.S. gal 86 ltr
Hydraulic system 117.0 U.S. gal 443 ltr
Axle:
Front 41.0 U.S. gal 155 ltr
Rear 41.0 U.S. gal 155 ltr
Torque converter and transmission 21.9 U.S. gal 83 ltr

Steering System

Type Articulated type, full-hydraulic power steering
Steering angle 43° each direction
Minimum turning radius at the center of outside tire 23'3" 7075 mm

Transmission

Torque converter:
Type 3-element, single-stage, double-phase
Transmission:
Type Full-powershift, planetary type
Travel speed Measured with 35/65-33 tires
Speed: Forward
(Lock-up clutch ON)
Reverse
1st 4.2 mph
6.7 km/h
4.5 mph
7.3 km/h
2nd 7.3 mph
11.7 km/h

(7.7 mph
12.4 km/h)
8.0mph
12.8 km/h
3rd 12.6 mph
20.3 km/h

(13.5 mph
21.7 km/h)
13.7 mph
22.0 km/h
4th 20.5 mph
33.0 km/h

(23.4 mph
37.7 km/h)
22.4 mph
36.0 km/h

standard

  • 2-spool valve for raise, lower and pitch controls
  • Advanced Joystick Steering System (AJSS)
  • Alternator, 90 A/24 V
  • Auto air conditioner
  • Auto shift transmission with mode select system
  • Auxiliary steering
  • Back-up alarm
  • Back-up lamp
  • Batteries, 200 Ah/12 V x 2
  • Brake cooling system
  • Counterweight, front 468 kg 1032 lb
  • Counterweight, rear 616 kg 1358 lb
  • Dozer push frame assembly
  • Directional signal
  • Electric supply, 12V
  • Engine, Komatsu SAA6D170E-5 diesel
  • Electronic Pilot Control (EPC) mono control lever
  • Floormat
  • Front fenders
  • Hydraulic-driven fan with reverse rotation
  • In-line filter, hydraulic
  • In-line filter, steering
  • Lift cylinder, tilt and pitch cylinders
  • Lock-up clutch torque converter
  • Main monitor panel with Equipment Management Monitoring System (EMMS)
  • Radiator mask, lattice type
  • Rear access stairs
  • Rear defroster (electric)
  • Rear under view mirror
  • Rearview mirrors
  • Rear window washer and wiper
  • Rims for 35/65-33 L4 tires
  • ROPS/FOPS Level 2 cab
  • Seat belt, 76 mm 3" wide
  • Service brakes, wet disc type
  • Starting motor, 11.0 kW/24 V x 2
  • Sun visor
  • Transmission, 4 forward and 4 reverse
  • Vehicle Health Monitoring System (VHMS)
  • In-line filter, steering
  • Lift cylinder, tilt and pitch cylinders
  • Lock-up clutch torque converter
  • Main monitor panel with Equipment Management Monitoring System (EMMS)
  • Radiator mask, lattice type
  • Rear access stairs
  • Rear defroster (electric)
  • Rear under view mirror
  • Rearview mirrors
  • Rear window washer and wiper
  • Rims for 35/65-33 L4 tires
  • ROPS/FOPS Level 2 cab
  • Seat belt, 76 mm / 3" wide
  • Seat, air suspension type with reclining
  • Service brakes, wet disc type
  • Starting motor, 11.0 kW/24 V x 2
  • Sun visor
  • Transmission, 4 forward and 4 reverse
  • Vehicle Health Monitoring System (VHMS)

optional

  • AM/FM radio with cassette
  • Fuel quick coupler
  • Limited slip differential (F&R)
  • Power train guard
  • Rear full fender, right side
  • Steering wheel, tiltable
  • Straight blade, 8.0 m³ / 10.5 yd³ with angled end bits
  • Straight blade, 8.0 m³ / 10.5 yd³ with straight end bits
  • Warning light, amber colored beacon