NET HORSEPOWER179 kW 240 HP@ 1.900 rpm

OPERATING WEIGHTD85EX-15: 28.000 kgD85PX-15: 27.550 kg

D8

5E

X-1

5D

85

D85EX-15 / D85PX-15CRAWLER DOZER

D85_Engels 04-02-2003 11:28 Pagina 1

WALK-AROUND

D85EX/PX-15 C R A W L E R D O Z E R

2

Extra-low Machine ProfileProvides excellent machine balance and low center of gravity.

Preventative Maintenance• Centralized Service Station• Enclosed Hydraulic Piping• Modular Power Train Design

Simple Hull Frameand monocoque track framewith pivot shaft for greaterreliability.

Large BladeCapacities:D85EX: 5,2 m3 (Straight-tilt dozer)7,0 m3 (Semi-U dozer)

D85PX: 5,9 m3 (Straight-tilt dozer)

The track link lifeA new design with increased bushing diameter and link heightincreases lifetime of lubricated track.

Komatsu-integrated designFor the best value, reliability, and versatility. Hydraulics,power train, frame, and all other major components areengineered by Komatsu. You get a machine whosecomponents are designed to work together for higherproduction, greater reliability, and more versatility.

Hydrostatic Driven Engine Cooling FanControlled automatically, reduces fuel consumption andoperating noise levels.

D85_Engels 04-02-2003 11:28 Pagina 2

NET HORSEPOWER@ 1.900 rpm

D85EX/PX-15: 179 kW 240 HP

OPERATING WEIGHTD85EX-15: 28.000 kg D85PX-15: 27.550 kg

BLADE CAPACITYSemi-U Tilt Dozer:D85EX-15: 7,0 m3

Straight Tilt Dozer:D85EX-15: 5,2 m3

D85PX-15: 5,9 m3

D85EX/PXCRAWLER DOZER

3

HSS (Hydrostatic Steering System) provides Smooth, Quick and Powerful turns in various

ground conditions.

New Hexagonal Designed Cab includes:• Spacious interior• Comfortable ride with new cab damper• Excellent visibility• High capacity air conditioning system• PCCS (Palm Command Control System) lever for direction and blade• Pressurized cab• Adjustable armrests• High back seat following latest design

Komatsu SA6D125E-3 179 kW 240 HPturbocharged,

aftercooled engine provides ample power.

Low-drive, long-track, undercarriage Ensures outstanding grading ability and stability.

D85_Engels 04-02-2003 11:28 Pagina 3

4

PCCS (PALM COMMAND CONTROL SYSTEM)D85EX/PX-15 C R A W L E R D O Z E R

Human-Machine Interface

Komatsu develops new ergonomically designed control system"PCCS" creating an operating environment with "complete operatorcontrol".

Palm Command Electronic ControlledTravel Control JoystickPalm command travel joystick provides the operatorwith a relaxed posture and superb fine control without operator fatigue. Transmission gear shifting issimply carried out with thumb push buttons.

Full-adjustable Suspension Seat andTravel Control ConsoleThe travel control console has adjustment fore andaft, and height.For improved rear visibility during reverse operations,the operator can adjust seat 15° to the right.

Palm Command PPC Controlled BladeControl JoystickBlade control joystick uses the PPC (ProportionalPressure Control) valve and blade control is similar tothe travel control PCCS. PPC control combined withthe highly reliable Komatsu hydraulic system enablessuperb fine blade control.

Fuel Control DialEngine revolution is controlled by an electronic signal,providing ease of operation, eliminating maintenanceof linkage and joints.

Height Adjustable ArmrestArmrest is height adjustable without any tools,providing the operator with firm arm support in anideal armrest.

Left-hand Joystick Blade and Ripper Control Joystick

Facing Front

When Turned 15°

Outline of Electronic Control System

EC

MV

EC

MV

EC

MV

EC

MV

Auto shiftdown switch

ServiceSwitch

Fuel controldial

Travel control lever

Monitor panel

Decelarationpedal

Enginecontroller

Engine Electronic controlledTransmission

Transmissioncontroller

Enginespeed

Fueltemp.

Engineoilpressure

Watertemp.

Fuel controlvalve unit

Transmissioncontrol valve

Accelerationsensor

Brake pedalpotentiometer

Transmissionoutput speedsensor

D85_Engels 04-02-2003 11:28 Pagina 4

5

D85EX/PXCRAWLER DOZER

Smooth and Soft OperationD85EX/PX utilizes a newly designed power train electronic control system. The controller registers the amount ofoperator control (movements of lever and operation of switches) along with machine condition signals from eachsensor, to calculate accurately the control of the transmission for optimal machine operation. The ease of operationand productivity of the new D85EX/PX is greatly improved through these new features.

ECMV (Electronic Controlled Modulation Valve) ControlledTransmissionController automatically adjusts each clutch engagement depending on travelconditions such as gear speed, revolution and shifting pattern. This providessmooth shockless clutch engagement, improved component reliability, improvedcomponent life and operator ride comfort.

Hydrostatic Steering System—Smooth, Powerful TurningThe Hydrostatic Steering System (HSS) is powered by an independent hydraulicpump with engine power transmitted to both tracks without power interruption onthe inside track. When the machine turns, the outside track moves faster and the

inside slower, for smooth, powerful turns. Counter-rotation is available forminimum turning radius providing excellent maneuverability. Shock-free steering

reduces machine vibration and minimizes operator fatigue.

Preset Travel Speed FunctionPreset travel speed selection function is provided as standard equipment.The preset switch enables the operator toselect fore and aft travel speed among three preset patterns, F1-R2, F2-R2 and manual shift. When the F1-R2 orF2-R2 preset pattern is selected, and travel control PCCS moves from forward to reverse direction, the machinetravels forward/reverse with F1/R2 or F2/R2 speed automatically. This function reduces gear shifting time duringrepeated round trip operations.

Auto-Downshift FunctionController monitors engine speed, travel gear and travel speed. When load is applied

and machine travel speed is reduced, the controller automatically downshifts tooptimize gear speed to provide high fuel efficiency. This function provides

comfortable operation and high productivity without manual downshifting. (This function can be deactivated with cancel switch.)

Power Train Electronic Control System

Electronically ControlledModulation Valve (ECMV)

Conventional modulation valve

Time

Clutch pressure

Brakes

Steering planetarygear units

Hydraulic motor

Actuated on heavy load or steep slopes

MANUAL MODE (F1-R1)Press DOWN switch Press UP switch

F1-R2 MODEPress DOWN switch Press UP switch

F2-R2 MODE

Heavy load Light load

UP

DOWN

D85_Engels 04-02-2003 11:28 Pagina 5

PRODUCTIVITY FEATURES

D85EX/PX-15 C R A W L E R D O Z E R

The Komatsu SA6D125E-3 engine delivers 179 kW240 HP at 1.900 rpm. The fuel-efficient Komatsuengine, together with the heavy machine weight,make the D85EX/PX superior crawler dozers in bothripping and dozing operations. The engine isdesigned to surpass Euro Stage II regulations, and features direct fuel injection, turbocharger, andaftercooler to maximize fuel efficiency.

To minimize noise and vibration, the engine ismounted to the main frame with rubber cushions.

Hydrostatic Driven Engine Cooling Fan Fan rotation is automatically controlled depending oncoolant and hydraulic oil temperature, saving fuelconsumption and providing great productivity with aquiet operating environment.

Low Drive and Long Track UndercarriageKomatsu’s design is extraordinarily tough and offersexcellent grading ability and stability. Large-diameterbushings, increased track link height, and improvedoil seals help to increase undercarriage durability.

Serviceability has also been improved with theaddition of remote greasing of the equalizer barcenter pin.

Engine

Large Blade Capacities of 5,2 m3 (Straight-tilt dozer for D85EX),5,9 m3 (D85PX), 7,0 m3 (Semi-U dozer) yieldoutstanding production. High-tensile-strength steelhas been incorporated into the front and sides of theblade for increased durability.

Rippers (EX)• The multi-shank ripper features a long sprocket

center-to-ripper point distance, making rippingoperation easy and effective while maintaining highpenetration force.

• The variable depth multi-shank ripper is aparallelogram design ideal for ripping in toughmaterial.

Work Equipment

Undercarriage

6

D85_Engels 04-02-2003 11:29 Pagina 6

D85EX/PXCRAWLER DOZER

7

WORKING ENVIRONMENT

Operator Comfort Comfortable Ride with New Cab DamperMounting D85EX/PX’s cab mounts use a newly designed cabdamper which provides excellent shock and vibrationabsorbtion capacity with its long stroke. Cab dampermounts soften shocks and vibration while travelingover adverse conditions, which conventional mountingsystems are unable to absorb. The cab damperspring isolates the cab from the machine body,suppressing vibration and providing a quiet,comfortable operating environment.

New Suspension SeatD85EX/PX uses a newly designed suspension seat.Fore and aft sliding rails and suspension spring havebeen newlydesigned toincrease strengthand rigidity. Thenew seat providesexcellent support,improving ridingcomfort. Fore andaft seat travel hasbeen designed forall operator sizes.

Operator comfort is essential for safe and productivework. The D85EX/PX provides a quiet, comfortableenvironment where the operator can concentrate onthe work at hand.

Hexagonal Pressurized Cab • The cab’s new hexagonal design and large tinted

glass windows provide excellent front, side, and rearvisibility.

• Air filters and a higher internal air pressure combineto prevent dust from entering the cab.

RubberBoot

Silicon oil Spring

Cab Damper Mounting

D85_Engels 04-02-2003 11:29 Pagina 7

EASY MAINTENANCE

D85EX/PX-15 C R A W L E R D O Z E R

8

Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsudesigned the D85EX/PX with conveniently located maintenance points to make necessary inspections andmaintenance quick and easy.

Preventative Maintenance

Centralized Service StationTo assure convenient maintenance, the transmissionand HSS oil filters, power train oil level gauges andhydraulic tank are arranged in the right side of themachine.

Monitor With Self-Diagnostic FunctionWith the starting switch turned ON, the monitordisplays on the panel, check-before-starting andcaution items appear on the right lower part of thepanel. If the monitor finds abnormalities, correspondingwarning lamp blinks and warning buzzer sounds. Themonitor displays engine rpm and forward/reverse gearspeed on the upper part of the monitor duringoperation. When abnormalities occur during operation,user code and service meter are displayed alternately.When a critical user code is displayed, the cautionlamp blinks and a warning buzzer sounds to preventthe development of serious problems.

Enclosed Hydraulic PipingHydraulic piping for the blade tilt cylinder iscompletely housed in the push arm, ensuring damage protection from materials.

Easy Cleaning With Hydraulic DrivenRadiator FanThe radiator core and the core on the front side of theoil cooler can be easily cleaned by running thehydraulic engine cooling fan in reverse. Accordingly,the cleaning intervals of those cores can be increasedso giving a better cooling efficiency.

Modular Power Train DesignPower train components are sealed in a modulardesign that allows the components to be dismounted and mounted without oil spillage.

Reliable Simple StructureSimple hull structure main frame design increasesdurability and reduces stress concentration at criticalareas. The track frame has a large cross section andutilizes pivot shaft mounting for greater reliability.

Maintenance Free Disc BrakesWet disc brakes require less maintenance.

Gull-wing Engine Side CoversThe opening area is further enlarged when gull-wingengine side covers are opened, facilitating enginemaintenance and filter replacement. Side covers havebeen changed to a thick one-piece structure with abolt-on catch to improve durability.

EnginePower train unit

Hull frame

Final drive

Pivot shaftTrack frame

Shoe

Heavy-duty Track LinkThe track link life is greatly improved throughincreased bushing diameter and link height in addition to a lubricated track.

D85_Engels 04-02-2003 11:29 Pagina 8

D85EX/PXCRAWLER DOZER

9

CLEAN AND QUIET DESIGNClean EngineThe SA6D125E-3 engine meets European Stage IIemissions regulations, without sacrificing power ormachine productivity.

Quiet DesignThe low-noise engine, hydraulically driven fan andrubber-mounted power train provide a quiet operation.

Use of Recyclable PartsRecyclable parts are used, reducing the effects onthe environment.

Long-life Consumable PartsLong-life consumable parts such as filters andelements are used to lengthen their replacementinterval and lower the maintenance cost.

D85_Engels 04-02-2003 11:29 Pagina 9

D85EX/PX-15 C R A W L E R D O Z E R

10

ENGINE

TORQFLOW TRANSMISSION

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SA6D125E-3Type . . . . . . . . . . . . . . . . . . 4-stroke, water-cooled, direct injectionAspiration . . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooledNo. of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Bore x stroke . . . . . . . . . . . . . . . . . . . . . . . . . . 125 mm x 150 mm Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,04 ltr Flywheel horsepower

SAE J1349 . . . . . . . . . . . . . . . . . . 179 kW 240 HP at 1.900 rpmDIN 6270 . . . . . . . . . . . . . . . . . . . 179 kW 243 PS at 1.900 rpm

Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, electronicLubrication system

Method . . . . . . . . . . . . . . . . . . . . . Gear pump, force lubricationFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow

STEERING SYSTEM

PCCS lever controls all directional movements. Pushing the PCCSlever forward results in forward machine travel, while pulling it rear-ward reverses the machine. Simply tilt the PCCS lever to the left orright to make a left or right turn.Hydrostatic Steering System (HSS) is powered by steering plane-tary units and an independent hydraulic pump and motor. Counter-rotation turns are also available. Wet, multiple-disc, pedal-con-trolled service brakes are spring-actuated and hydraulicallyreleased. Gear shift lock lever also applies parking brake.Minimum turning radius (Counter rotation) D85EX-15 . . . . 1,99 m

D85PX-15 . . . . 2,24 m

UNDERCARRIAGE

Suspension . . . . . . . . . . . . Oscillating equalizer bar and pivot shaftTrack roller frame . . . . . . . . . . . . . . . . . Monocoque, large section,

durable constructionRollers and idlers . . . . . . . . . . . . . . . . . . . . Lubricated track rollers

Track shoesLubricated tracks. Unique seals prevent entry of foreign abrasive material into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.

COOLANT AND LUBRICANTCAPACITY (REFILLING)

Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490 ltrCoolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 ltrEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ltrTorque converter, transmission,

bevel gear, and steering system . . . . . . . . . . . . . . . . . . . . 84 ltrFinal drive (each side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 ltr

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter and a planetarygear, multiple-disc clutch transmission which is hydraulically-actuat-ed and force-lubricated for optimum heat dissipation. Gearshift locklever and neutral safety switch prevent accidental starts.

Travel speed Forward Reverse

D85EX-15 D85PX-15 D85EX-15 D85PX-15

1st 3,6 km/h 3,6 km/h 4,7 km/h 4,7 km/h

2nd 6,1 km/h 6,0 km/h 8,0 km/h 7,9 km/h

3rd 10,1 km/h 10,0 km/h 13,0 km/h 12,7 km/h

60

50

40

30

20

10

00 2 4 6 8 10 12

tonkN

500

400

300

200

100

0

F3

F2

F1

D85EX-15 Power Shift

DRAWBAR PULL VS. SPEEDMAXIMUM USABLE PULL

DEPENDS ON TRACTION AND WEIGHT OF TRACTOR INCLUDING MOUNTED

EQUIPMENT

FINAL DRIVES

Double-reduction final drive of spur and planetary gear sets toincrease tractive effort and reduce gear tooth stresses for long finaldrive life. Segmented sprocket rims are bolt-on for easy replace-ment.

SPECIFICATIONS

Travel Speed

Dra

wb

ar P

ull

D85EX-15 D85PX-15

Number of track rollers (each side) 7 8

Type of shoes (standard) Single grouser Single grouser

Number of shoes (each side) 41 45

Grouser height 72 mm 72 mm

Shoe width (standard) 560 mm 910 mm

Ground contact area 34.160 cm2 63.340 cm2

Ground pressure 73,6 kPa 42,2 kPa(with dozer, cab and ROPS) 0,75 kg/cm2 0,43 kg/cm2

Track gauge 2.000 mm 2.250 mm

Length of track on ground 3.050 mm 3.480 mm

km/h

D85_Engels 04-02-2003 11:29 Pagina 10

Overall Maximum Maximum Maximum Weightlength with Blade Blade lift above drop below tilt Dozer Hydraulic Ground

dozer capacity length x height ground ground adjustment equipment oil pressure*

D85EX-15 5.640 mm 5,2 m3 3.715 mm x 1.436 mm 1.207 mm 540 mm 750 mm 3.305 kg 24 kg 72,6 kPaStraight tilt dozer 0,74kg/cm2 10,5 psi

D85EX-15 5.795 mm 7,0 m3 3.635 mm x 1.580 mm 1.207 mm 540 mm 735 mm 3.575 kg 24 kg 73,6 kPaSemi-U tilt dozer 0,75 kg/cm2 10.7 psi

D85PX-15 6.065 mm 5,9 m3 4.365 mm x 1.370 mm 1.207 mm 568 mm 500 mm 2.474 kg 23 kg 42,2 kPaStraight tilt dozer 0,43 kg/cm2 6.1 psi

D85EX/PXCRAWLER DOZER

11

HYDRAULIC SYSTEM

Closed-center load sensing system (CLSS) designed for preciseand responsive control, and for efficient simultaneous operation.

Hydraulic control units:All spool valves externally mounted beside the hydraulic tank.Plunger type hydraulic pump with max. capacity (discharge flow) of 195 ltr/min at rated engine rpm.

Relief valve setting . . . . . . . . . . . . 22,6 MPa 230 kg/cm2 3.270 psi

Control valves:Spool control valves for tilt dozerPositions:

Blade lift . . . . . . . . . . . . . . . . . . . . . Raise, hold, lower, and floatBlade tilt . . . . . . . . . . . . . . . . . . . . . . . . . . . Right, hold, and left

Additional control valve required for multi-shank ripper (EX)Positions:

Ripper lift . . . . . . . . . . . . . . . . . . . . . . . . Raise, hold, and lower

Hydraulic cylinders . . . . . . . . . . . . . . . . . . . . Double-acting, piston

Hydraulic oil capacity (refill):Straight tilt dozer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 ltrSemi-U tilt dozer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 ltr

Ripper equipment (additional volume):Multi-shank ripper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ltr

DOZER EQUIPMENT

DIMENSIONS

Number of cylinders Bore

Blade Lift 2 100 mm

Blade Tilt 1 150 mm

Ripper Lift 2 130 mm

D

E FAB

C H

G

Ground clearance: 450 mm Dimensions with semi-U dozer and multi-shank ripper (D85EX)

D85EX-15 D85PX-15

A 2.000 mm 2.250 mm

B 3.635 mm 4.365 mm

C 3.330 mm 3.330 mm

D 3.050 mm 3.480 mm

E 5.795 mm 6.065 mm

F 1.460 mm –

G 72 mm 72 mm

H 3.330 mm 3.330 mm

Blade capacities are based on the SAE recommended practice J1265.

OPERATING WEIGHT

Tractor weight:Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.

D85EX-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21.040 kg D85PX-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23.320 kg

Operating weight:Including Semi-U tilt dozer (EX) or straight tilt dozer (PX), multi-shank ripper (EX), steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.

D85EX-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.000 kg D85PX-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.550 kg

* Ground pressure shows tractor, cab, ROPS canopy operator, standard equipment and applicable blade.

D85_Engels 04-02-2003 11:29 Pagina 11

CRAWLER DOZER

STANDARD EQUIPMENT

EESS015200 1/2003

Komatsu EuropeInternational NVMechelsesteenweg 586B-1800 VILVOORDE (BELGIUM)Tel. +32-2-255 24 11Fax +32-2-252 19 81www: komatsueurope.com

• Alternator, 50 ampere/24V• Batteries 140Ah/2 x 12V• Blower fan, hydrostatic• Decelerator pedal• Dry-type air cleaner with dust

evacuator and dust indicator• Final drive case wear guard• Hinged front mask, perforated• Front pull hook• Hydraulic track adjusters• Back up alarm• Lunch box holder• Hydrostatic Steering System

(HSS)• Lighting system (includes 2 front,

2 rear)• Muffler with rain cap

• Palm lever steering control• Radiator reserve tank• Segmented sprockets

ROPS canopy*Weight ............................... 4 37 kg Roof Dimensions

Length ........................ 1.368 mm Width ...........................1.850 mm

Height fromcompartment floor ......1 .768 mm

Additional ground pressure...............................(0,01 kg/cm2)

• Shoes:610 mm single grouser (EX)910 mm single grouser (PX)

• Seatbelt, 76 mm • Gull wing engine side covers• Blade cylinder guards• Track frames• Starting motor 7,5kW/24V• Suspension seat (reclining, turn,

fabric material, high back)• TORQFLOW transmission• Track roller guards, full length

(PX) center and end section(EX)

• Warning horn• Engine hood• Rear cover• PM service connectors• Ripper hydraulics• Pre radio installation kit

ROPS for cab*Weight ................................ 371 kg Roof dimensions

Length ........................... 650 mm Width .......................... 1.774 mm

Height fromcompartment floor ...... 1.768 mm

Steel CabWeight ................................ 410 kg Dimensions:

Length ........................ 1.754 mm Width .......................... 1.323 mm

Height from compartmentfloor to ceiling ............. 1.592 mm

OPTIONAL EQUIPMENT• Air conditioner• Alternator 75A• Heater and defroster• Batteries 200 Ah/2 x 12V• Rigid drawbar (PX model only)• Light for ripper point• Starting motor 11kW/24V• Vandalism protection kit• Suspension seat, (reclining, turn,

vinyl material, high back)

• Rear counterweight• Radio, AM/FM• Shoes:

560 mm Single grouser (EX)660 mm Single grouser (EX)910 mm Swamp shoes (PX)

CAB• Sunvisor• Rear view mirror*Meets ISO 3471 and SAE J1040

APR88 ROPS standards, as wellas ISO 3449 FOPS standards.

Additional ground pressure.....1,0 kPa (0,01kg/cm2) 0,14 psi

Multi-shank ripperHydraulically controlled parallelo-gram ripper with three shanks.Weight (including hydraulic

control unit)................... 2.500 kg Beam length.................. 2.246 mm Maximum lift above

ground ........................... 564 mm Maximum digging depth... 653 mm Additional ground pressure

...................................0,07kg/cm2

D85EX/PX-15

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D85_Engels 04-02-2003 11:29 Pagina 12