PRODUCT BULLETIN

D65EX/PX/WX-15
Crawler Dozer
INTERNAL USE ONLY

Photo may include optional equipment.

Introducing the
D65EX/PX/WX-15 Crawler Dozer
Building on the technology and expertise Komatsu has
accumulated since its establishment in 1921, GALEO
presents customers worldwide with a strong, distinctive
image of technological innovation and exceptional value.
The GALEO brand will be employed for Komatsu's full
lineup of advanced construction and mining equipment.
Designed with high productivity, safety and environmental
considerations in mind, the machines in this line reflect
Komatsu's commitment to contributing to the creation of a
better world.

Genuine Answers for Land & Environment Optimization

TABLE OF CONTENTS
1 HIGHLIGHTS AND TECHNICAL SELLING POINTS ..................................................................................................... 2-3
2 DESIGN CONCEPT
AIM OF DEVELOPMENT ......................................................................................................................................................................... 4
MAIN STRUCTURE COMPARISON......................................................................................................................................................... 5
PRODUCT LINE COMPARISON .............................................................................................................................................................. 5

3 PRODUCTIVITY FEATURES
OUTSTANDING PRODUCTIVITY AND FUEL ECONOMY ...................................................................................................................... 6-7
POWERFUL AND CLEAN SA6D125E-3 ENGINE ..................................................................................................................................... 7
4 MANEUVERABILITY FEATURES
PCCS FEATURES ................................................................................................................................................................................... 8
PCCS HUMAN-MACHINE INTERFACE .............................................................................................................................................. 9-11
ELECTRONIC TRANSMISSION CONTROL SYSTEM ....................................................................................................................... 12-14
HSS ................................................................................................................................................................................................ 14-15
FUEL CONTROL DIAL AND ENGINE KEY STOP.................................................................................................................................... 15

5 COMFORT FEATURES
CAB DAMPER....................................................................................................................................................................................... 16
DELUXE LARGE CAB (OPTIONAL) .................................................................................................................................................. 17-18
LARGE-CAPACITY AIR CONDITIONER (OPTIONAL) ............................................................................................................................ 19
EASY-TO-SEE MONITOR PANEL.......................................................................................................................................................... 19

6 RELIABILITY AND DURABILITY FEATURES

ELECTRICAL WIRING........................................................................................................................................................................... 20
ENGINE AND HYDRAULIC OIL FILTER................................................................................................................................................. 20
O-RING FACE SEAL.............................................................................................................................................................................. 21
BUILT-IN BLADE TILT PIPING.............................................................................................................................................................. 21

7 EASY MAINTENANCE
NEW MONITOR WITH SELF-DIAGNOSTIC FUNCTION .................................................................................................................... 22-23
GULL-WING ENGINE SIDE COVERS .................................................................................................................................................... 24
ENGINE AIR INTAKE PIPE WITH RAIN CAP ......................................................................................................................................... 25
CENTRALIZED SERVICE STATION ....................................................................................................................................................... 25
EASY AIR CLEANER CHECK................................................................................................................................................................. 26
MAINTENANCE FREE DISC BRAKES .................................................................................................................................................... 26
REVERSIBLE RADIATOR FAN .............................................................................................................................................................. 27
ELIMINATION OF FAN BELT TENSION ADJUSTMENT ......................................................................................................................... 28
WORKING LIGHTS WITH REPLACEABLE BULB................................................................................................................................... 28

8 ENVIRONMENTAL FEATURES
LOW EMISSION ENGINE ...................................................................................................................................................................... 29

9 COMPARATIVE SPECIFICATIONS .................................................................................................................................. 30-32

10 ATTACHMENTS AND OPTIONAL EQUIPMENT ............................................................................................................. 33
11 INTERCHANGEABILITY ....................................................................................................................................................... 34-35
12 TRANSPORTATION GUIDE..................................................................................................................................................... 36

1
 1 HIGHLIGHTS AND
TECHNICAL SELLING POINTS

E
fr
•

Hydraulic Driven Engine

Cooling Fan controlled automatically,
reduces fuel consumption and operating
noise levels.

SA6D125E-3 turbocharged aftercooled

diesel engine provides an output of 142 kW (190 HP)
with excellent productivity, and is Tier 2 EPA, EU and
Japan emissions certified.

Gull-wing engine side doors for

easy and safer servicing.

High capacity Semi-U Tilt dozer

(for D65EX/WX), Straight Tilt dozer
combined the highest power in its class
with outstanding productivity.

Blade tilt lines

completely protected.

Komatsu Torqflow transmission

offers single lever control of speed and directional Forward mounted pivot shafts isolate
changes (3 forward and 3 reverse) . final drives from blade loads.

2
 HIGHLIGHTS AND
TECHNICAL SELLING POINTS 1
Electronic Monitoring System prevents minor problems
from developing into major ones.
• Monitors machine condition data.

• Stores machine abnormalities for effective troubleshooting.

• Displays replacement time for oil and filters.

New Hexagonal Designed Cab includes:

• Spacious interior
• Comfortable ride with new cab damper
• Excellent visibility

• High capacity air conditioning system (optional)

• PCCS (Palm Command Control System) lever

• Pressurized cab (optional)

• Adjustable armrests

Wet multiple-disc brakes

eliminates brake-disc adjustments
for maintenance-free operation.

Hydrostatic Steering System (HSS)

provides smooth, quick and powerful control
in varying ground conditions.

Bolt-on segmented sprocket teeth

for easy in-the-field replacement.

Modular power train

for increased serviceability and durability.

Photo may include optional equipment.

3
AIM OF DEVELOPMENT
2 DESIGN CONCEPT

To improve competitive advantage over the D6R, the

new D65EX/PX/WX-15 has been designed based on
features from the D85EX/PX-15 and other larger
bulldozers. The following functions have been
incorporated.

★ Excellent productivity ★ Improved reliability/serviceability

Hydraulic driven engine cooling fan and electronic An electronic display monitor panel with self-
controlled transmission have been incorporated diagnostic function make it easier for the operator
offering further improved productivity. to monitor the machine vital functions. Reversible
radiator fan also facilitates easy servicing.
★ Improved maneuverability
Newly developed PCCS (Palm Command Control ★ Environmentally friendly
System) and ECMV (Electronic Controlled The D65EX/PX/WX-15 SA6D125E-3 engine is
Modulation Valve) transmission provide EPA/CARB Tier 2 certified. Ambient noise of
comfortable and easier operation. D65EX/PX/WX-15 is also reduced by utilizing a
hydraulic driven engine cooling fan.
★ Comfortable operation
Sound levels for the operator are reduced through
the use of the hydraulic driven engine cooling fan
and new cab damper mounting. Adjustable arm
rest and newly designed larger cab with improved
window/door seals and latches improve operator
comfort.

4
DESIGN CONCEPT 2
MAIN STRUCTURE
COMPARISON

Model D65EX/PX/WX-15 D65EX/PX-12 D6R-2

Item

Engine Tier 2 emission certified Tier 1 emission certified Tier 2 emission certified

Fan drive Hydraulic Mechanical Mechanical

Power train Modular design Modular design Modular design

Transmission Planetary gear type with ECMV Planetary gear type Planetary gear type

Steering HSS HSS Differential steer/Clutch & brake

Steering control PCCS, Single-lever PPC, Single-lever FTC/Tiller

Undercarriage Low drive Low drive High drive

Hydraulic control PPC PPC Hydraulically assisted

Cab mount Cab damper mount Viscous mount Rubber mount

Monitor With self-diagnostic function Conventional monitor With self-diagnostic function

and maintenance mode

PRODUCT LINE
COMPARISON

Engine output

New D41E/P-6C D65EX/PX/WX-15 D85EX/PX-15

82 kW (110 HP) 142 kW (190 HP) 179 kW (240 HP)

D65EX/PX-12
142 kW (190 HP)

Current D41E/P-6B D61EX/PX-12 D85EX/PX-15 D155AX-5A

82 kW 112 kW 179 kW 231 kW
(110 HP) (150 HP) (240 HP) (310 HP)

Caterpillar D5M D6M D6R-II D6R-II* D7R-II D8R-II

82 kW 104 kW 122 kW 136 kW 177 kW 231 kW
(110 HP) (140 HP) (163 HP) (183 HP) (238 HP) (310 HP)

John Deere 700H 750C-II 850C-II 950C 1150C

86 kW 104 kW 140 kW 171 kW 242 kW
(110 HP) (140 HP) (185 HP) (230 HP) (324 HP)

* : XL, XW and LGP

5
OUTSTANDING
3 PRODUCTIVITY FEATURES
PRODUCTIVITY AND FUEL
ECONOMY

Test Conditions Piling Digging

Soil: Sandy soil 10m 20m
Throttle: Full (32'10") (65'8")
Speed range: F2-R2

Hourly Production Production Per Fuel

1.2 1.2 1.2 1.2

1.08
1. 08
1.1 1.1 1.03
1. 1.1 1.1
1.01
1.
1.0 1.0 1.0 1.0 0.96

0.9 0.9 0.9 0.9

D65EX-15
D65 X-15 D6R XL Series II D65EX-15
D65 X-15 D6R XL Series II D65
D65EX-15
X-15 D6R XL Series II D65 X-15
D65EX-15 D6R XL Series II
F2-R2 3 F2-R2 w/Auto Shift Down F2-R2 F2-R2 w/Auto Shift Down

Model
D65EX-15 D6R XL II D65EX-15 D6R XL II

F2-R2 w/Auto F2-R2 w/Auto

F2-R2 F2-R2
Down Shift Down Shift

Item 1st 2nd Mean 1st 2nd Mean 1st 2nd Mean 1st 2nd Mean

Mean Forward Time sec. 27.7 29.0 28.4 32.2 30.1 31.2 28.5 28.5 34.9 34.9
Mean Reverse Time sec. 14.0 14.1 14.1 14.8 14.1 14.5 13.7 13.7 14.8 14.8

Volume Per Hour m3/h 419.8 448.7 434.3 354.0 447.8 400.9 409.0 409.0 398.9 398.9
(yd3/h) (548.8) (586.5) (567.7) (462.7) (585.4) (524.1) (534.6) (534.6) (521.4) (521.4)
% 1.08 1.00 1.03 1.00

Fuel Consumption Per Hour l/h 38.6 39.4 39.0 36.5 36.1 36.3 37.9 37.9 35.6 35.6
(gal/hr) (10.2) (10.4) (10.3) (9.6) (9.5) (9.6) (10.0) (10.0) (9.4) (9.4)
% 1.07 1.00 1.06 1.00

Volume Per Liter m3/l 10.9 11.4 11.2 9.7 12.4 11.1 10.8 10.8 11.2 11.2
(yd3/h) (14.2) (14.9) (14.6) (12.7) (16.2) (14.5) (14.1) (14.1) (14.6) (14.6)
% 1.01 1.00 0.96 1.00

6
PRODUCTIVITY FEATURES 3
OUTSTANDING
★ designates a key “new” feature ✩ designates a key “current” feature PRODUCTIVITY AND FUEL
ECONOMY continued

★ Outstanding productivity and fuel economy

The high power engine with hydrostatic driven cooling
10 m (32' 10") Piling
fan, electronic controlled transmission, and HSS
(Hydrostatic Steering System) offers powerful dozing.
20 m (65' 8") 13 m (42' 7")
Digging Radius

Model
D65EX-15 D6R XL II

F2 While Turning F2 While Turning

Item 1st 2nd Mean 1st 2nd Mean

Mean Forward Time sec. 23.8 23.8 31.3 31.3

Mean Reverse Time sec. 12.9 12.9 15.5 15.5 Hourly Production Production Per Fuel

1.2 1.2 1.16

1.16
Volume Per Hour m3/h 312.9 312.9 253.4 253.4 1.23
1.23
(yd3/h) (409.0) (409.0) (331.2) (331.2) 1.1 1.1
% 1.23 1.00
1.0 1.0
Fuel Consumption Per l/h 39.0 39.0 36.9 36.9
Hour (gal/hr) (10.3) (10.3) (9.7) (9.7) 0.9 0.9
% 1.06 1.00

Volume Per Liter m /l 8.0 8.0 6.9 6.9

(yd3/h) (10.5) (10.5) (9.0) (9.0) D65EX-15 D6R XL Series II D65EX-15 D6R XL Series II
%3 1.16 1.00 F2 While Turning

POWERFUL AND
CLEAN SA6D125E-3
ENGINE

★ The Komatsu SA6D125E-3 engine delivers high .

output, low fuel consumption. In addition, the
SA6D125E-3 engine is EPA/CARB Tier 2 certified.

Comparison of main specifications

Item Model D65-15 D65-12 D6R-2

Komatsu Komatsu CAT

Engine model —
SA6D125E-3 S6D125E-2 C9

kW/rpm 142/1,950 142/1,950 136/2,000

Rated horsepower
(HP/rpm) (190/1,950) (190/1,950) (183/2,000)

Piston displacement ltr. (in3) 11.04 (674) 11.04 (674) 8.8 (537)

Torque rise % 34 33 N/A

Tier 2 emission certified Yes No Yes

7
PCCS FEATURES
4 MANEUVERABILITY
FEATURES
★ designates a key “new” feature ✩ designates a key “current” feature

★ New Electronic Travel Control Designed for The 21st Century

Komatsu has developed new ergonomically designed control system ‘‘PCCS” creating operating
environment with “complete operator control’’.

Ease of Operation Comfortable

• The electronic control provides excellent • Relaxed style operation reduces operator fatigue and
handling via light operating effort with short ergonomic design provides optimum layout.
lever strokes providing quick response. • Adjustable lever console (height and fore/aft).
• Preset shift pattern with auto shift-down • Shift and steering shock minimized through ECMV
function. (Electronic Controlled Modulation Valve).
• Push button style gear shift.
Control of operation without removing hand Reliability
from control lever. • New electronic system provides superior
serviceability.
• Self-diagnostic monitoring system.
• Monitor displays replacement time for oil and filters
(Maintenance mode).

Outline of PCCS Electronic Control System

Fuel Travel
control control
Auto shift Pre-set mode dial lever
down switch switch

Monitor panel

MONITOR SYSTEM

EPC
Control
Deceleration valve
pedal
EPC

Acceleration
sensor
Steering &
Engine Brake pedal
Transmission
controller potentiometer
controller

Transmission
control valve
ECMV
ECMV
ECMV
ECMV
ECMV

Engine
speed
Fuel
Water Engine temp
temp oil Trans-
pressure mission
Fuel control output
valve unit speed
Electronic controlled sensor
Engine
transmission HSS

8
MANEUVERABILITY
FEATURES 4
HSs HUMAN-MACHINE
PCCS
★ designates a key “new” feature ✩ designates a key “current” feature INTERFACE

★ Palm Command Travel Control Joystick

Palm command travel joystick provides the
operator with a relaxed posture and superb fine
control without operator fatigue. Transmission gear
shifting is simply carried out with thumb.

Structure of PCCS travel control lever

Four potentiometers (forward, reverse, left and right lever is actuated, voltage signal corresponding to lever
steering) are installed on travel control lever. When stroke is sent to controller.

Travel control Stroke

PALM lever

Potentiometer Potentiometer
(Forward/Reverse) (Left/right turn)
Voltage

Steering and Transmission Controller

Electric
current

ECMV EPC valve

5 pieces 2 pieces
Hydraulic
pressure

Clutches HSS Motor

Forward
Reverse
First
Second
Third FZDM101201

N Forward N Reverse
Right turn Left turn

Potentio-meter FVDM1230

9
PCCS HUMAN-MACHINE
4 MANEUVERABILITY
FEATURES
INTERFACE CONTINUED ★ designates a key “new” feature ✩ designates a key “current” feature

★ Easy gear shifting with shift-UP/DOWN switches

Transmission gear shifting is simply carried out with command travel joystick. The gear speed is
thumb using push buttons on the top of palm displayed on the monitor.

Shift-up switch

Forward
Reverse

Shift-down switch

D65EX/PX/WX-15 Preset travel speed indicator

★ Palm Command PPC Controlled Blade Control Joystick

Blade control joystick uses the PPC (Proportional control uses the highly reliable Komatsu
Pressure Control) valve and palm command hydraulic system enabling superb fine control.
joystick the same as travel control joystick. PPC

Blade control lever

10
MANEUVERABILITY
FEATURES 4
HSs HUMAN-MACHINE
PCCS
★ designates a key “new” feature ✩ designates a key “current” feature INTERFACE CONTINUED

★ Fully Adjustable Travel Control Console

The travel control console is adjustable in fore/aft
and height for operator comfort.

D65-15 D6R
Fore and aft adjustment: Turnable seat is optionally
90 mm (3.5") available Fore and aft adjustment: Blade control
100 mm (3.9") lever (Fixed)
o
15 Blade control lever (Fixed)

Travel console
height
adjustment:
Travel console 100 mm(3.9")
height
adjustment:
60 mm(2.4")

Seat position fixed at 15o

FZDM110301

Arm rest
(1.2")
30

Height
adjustment
Fore/aft
adiustment
(1.2")

30 60
30

(1.2") (2.4")

Travel control console

FZDM080501

11
ELECTRONIC
4 MANEUVERABILITY
FEATURES
TRANSMISSION ★ designates a key “new” feature ✩ designates a key “current” feature
CONTROL SYSTEM

★ New Electronic Transmission Control System with ECMV

D65EX/PX/WX-15 uses a newly designed power to accurately control transmission and steering
train electronic control system. The controller system for optimized machine operation. The ease
registers the amount of operator control of operation and power train reliability of the new
(movements of lever and operation of switches) D65EX/PX/WX-15 is improved by numerous new
and machine condition signals from each sensor functions.

Effect of ECMV control

Shift pattern changes depending on machine Electronic Controlled
Modulation Valve (ECMV)
conditions, providing shockless smooth clutch
Clutch pressure

Conventional modulation valve

engagement. This improves component reliability and
riding comfort, and extends component life.

★ Shift preset Function

Preset travel speed selection function is standard
Time
equipment, enabling the operator to select fore and aft
travel speed among four preset patterns such as F1- HEAVY LOAD
R1, F1-R2, F2-R2, and F2-R3. When preset pattern is
selected, and travel control joystick moves to forward/
rearward direction, the machine travels forward/reverse
with F1-R1, F1-R2, F2-R2 or F2-R3 speed
automatically. This function reduces operating hours
and operator's gear shifting time during repeated
round-trip operations. Manual gearshifting is also
FZDM1381
possible by pressing the UP or DOWN switch during
forward/reverse travel. LIGHT LOAD

PRESET MODE
F1-R1 MODE
UP Press DOWN switch Press UP switch

F1-R2 MODE
FZDM1382
Press DOWN switch Press UP switch

DOWN F2-R2 MODE

Press DOWN switch Press UP switch
FZDM1106
F2-R3 MODE

★ Auto-shift Down Function

Controller monitors engine speed, travel gear, and
travel speed. When load is applied and machine
travel speed is reduced, the controller automatically
shifts down to optimum gear speed to provide high
fuel efficiency. This function provides comfortable
operation without manual downshift and high
productivity. (This function can be cancelled with
auto-shift down switch.)

12
MANEUVERABILITY
FEATURES 4
HSs
ELECTRONIC
★ designates a key “new” feature ✩ designates a key “current” feature TRANSMISSION
CONTROL SYSTEM
CONTINUED
★ "Skip-shift" Function

Skip-shift function reduces time lag when quickly shifting sequentially. For example, when shifting from F1 to
F3, this function eliminates the engagement of F2. If operator quickly changes gear from F1 to F2 to F3, the
controller immediately shifts from F1 to F3.
(Example)
F1 ➞ F2 ➞ F3
When operator quickly presses shift-up button two times while traveling in F1 gear, F2 gear is skipped and
machine travels in F3 gear.

* “Skip-shift” function is always engaged.

Transmission modulation comparison

D65-15 D6R

Features On D65-15, an electronic controller conducts gear D6R has only one hydraulic pressure pattern for clutch
shifting, by always offers optimum modulating pattern for engagement, it is impossible to control smooth and
the moment to clutch engaging valves, that are optimum clutch engagement. (Electric operated
individually installed one by one clutch package. Their mechanical modulation)
combination provides shockless, smooth and powerful
shift change anytime.

Operation D65-15 has five pieces of electronic modulation valves Shifting system of transmission in D6R consists of circuit
for five clutch packages in transmission. They are selector valves on each clutch pack. The valves are
controlled by controller individually, and properly for any controlled by electric signal, with modulation determined
condition. Controller sends a signal of modulation by the balance between hydraulic pressure and clutch
pattern to the valve, depending on travel condition such springs. This design allows for one engagement curve
as load, travel speed, slope, and so on. under any condition.
When loaded
Transmission
Transmission

pressure
hydraulic
pressure
hydraulic

No load
One pattern (fixed)
Conventional

Time Time

FZDM0900
FZDM090101

Komatsu system maintains previous clutch engagement D6R system releases previous clutch engagement
during gear shifting, preventing time lag and torque off. pressure when gear shifting, causing time lag and
torque off.
Previous speed
clutch pressure kept Previous speed
clutch pressure
Transmission

Transmission
pressure
hydraulic

pressure
hydraulic

Time Time
Time lag and
torque off
FZDM0899
FZDM089801

13
 ELECTRONIC
4 MANEUVERABILITY
FEATURES

TRANSMISSION
CONTROL SYSTEM ★ designates a key “new” feature ✩ designates a key “current” feature
CONTINUED
Pressure Fill swich
Structure Pilot oil
control valve

ECMV (Electronic Controlled Modulation Valve)

consists of pressure control valve and fill switch.
Pressure control valve receives signal from
transmission controller on proportional solenoid
valve and converts current signal to hydraulic
pressure.

In Clutch Oil pressure Proportional

cell solenoid
FVDM0810

HSS

✩ Hydrostatic Steering System - Smooth, HSS turn Turn with conventional

Powerful Turning steering system
The D65EX/PX/WX-15 Hydraulic Steering System (Clutch/Brake)
(HSS) distributes power to both tracks without
power interruption on the inside track. When the
machine turns the outside track moves faster and
the inside slower, for smooth, powerful turns. The
left and right tracks can be counter-rotated for
minimum turning radius providing excellent
maneuverability.

Benefits of the HSS System

Dozing Operation While Turning

Power is transmitted to both tracks while turning, so dozing
operations while turning can be carried out efficiently at the same FZDM0992
speed as straight dozing.

Grading Operations
No power interruption occurs when turning, enabling the machine
to easily travel through, escape from, or turn in soft ground
conditions. FZDM0993

In addition, the tracks do not lock when steering, so that the ground
is not damaged and grading efficiency is greatly improved.

Side-Cutting Operations
It is easy to control the machine, even with a load on one side of
the blade. This enables the operator to perform side operations FZDM0994
efficiently and accurately.

Operations on Slopes
The clutch is not disengaged when steering on slopes, eliminating
the need for cross-steering.

FZDM0991

14
MANEUVERABILITY
FEATURES 4
HSs
HSS
★ designates a key “new” feature ✩ designates a key “current” feature CONTINUED

D65-15 turning radius

Model Komatsu Komatsu Komatsu Komatsu CAT CAT

Item D65PX-15 D65PX-12 D65EX-15 D65EX-12 D6R LGP II D6R XL II

112 cc / rev 95 cc / rev 112 cc / rev 95 cc / rev 102 cc / rev 102 cc / rev
Steering Pump Capacity
(6.8 in3 / rev (5.8 in3 / rev (6.8 in3 / rev (5.8 in3 / rev (6.2 in3 / rev (6.2 in3 / rev

95 cc / rev 95 cc / rev 95 cc / rev 95 cc / rev 108 cc / rev 108 cc / rev

Steering Motor Capacity
(5.8 in3 / rev (5.8 in3 / rev (5.8 in3 / rev (5.8 in3 / rev (6.6 in3 / rev (6.6 in3 / rev

199 kN 199 kN 199 kN 199 kN 185 kN 185 kN

Steering Force (20.3 ton / (20.3 ton / (20.3 ton / (20.3 ton / (18.9 ton / (18.9 ton /
(22.4 US ton) (22.4 US ton) (22.4 US ton) (22.4 US ton) (20.8 US ton) (20.8 US ton)

Minimum Turning Radius with HSS 4.9 m 5.0 m 4.2 m 4.3 m 5.2 m 4.4 m
by Track Marks on Ground at F1 (16'1") (16'15") (13'9") (14'1") (17'1") (14'5")

FUEL CONTROL DIAL

AND ENGINE KEY STOP
★ Fuel Control Dial
Engine rpm is controlled by electronic signals,
providing ease of operation and eliminating
problems caused by linkage joint seizure.

Fuel control dial

★ Engine key Stop

Operator can stop engine by simply turning
engine start key.

15
CAB DAMPER
5 COMFORT FEATURES
★ designates a key “new” feature ✩ designates a key “current” feature

★ Cab damper mounting

D65-15’s cab mount uses a newly designed cab
damper mounting which provides excellent shock
and vibration absorption capacity with its
combination of spring, rubber and silicon oil. It Rubber Boot

softens shocks and vibrations while traveling

rough ground, that are impossible to absorb with
conventional cab mounting methods.
The soft spring cab damper isolates the cab from
machine body, suppressing vibrations and
providing a quiet, comfortable operating
environment.
Silicon oil Spring

D65-15 D65-12 D6R

Mount method Cab damper mount Viscous mount Rubber

D65-15 D65-12 D6R

Rubber

Silicon
oil Spring
FZDM1405

Comparison of shock when traveling on flat ground with R3 gears

Vibration measured in operator's seat

V: Vibration in vertical direction
H: Vibration in horizontal direction
Unit: VL(dB)
110 101 101 100 100
99 97
100
90
80 V H V H
V H

D65-15 D65-12 D6R

FZDM1393
FZDM1384

* If figure is small, this means low vibration and shows

comfortable riding.

16
COMFORT FEATURES 5
DELUXE LARGE CAB
★ designates a key “new” feature ✩ designates a key “current” feature (OPTIONAL)

★ Large cab
1240 (4'1") 1508 (4'11")
Large spacious cab provides for a relaxed working
environment. The large window area provides
superb visibility and tinted (pale green) heat
absorbing glass is used for the windows to

1513 (5')
improve the safety and ease of operation.

FVDM1402

Item Model D65-15 D65-12 D6R Remarks

Width *1240 (4'1") *1124 (3'8") *1191 (3'11") *: At eye height

Front-to-rear length *1508 (4'11") *1323 (4'4") *1440 (4'9") *: At eye height

Height of console from

Height 1513 (5') 1397 (4'7") 1450 (4'9")
floor

Volume of cab 3.20 m3 (4.17 yd3) 2.90 m3 (3.79 yd3) 3.17 m3 (4.15 yd3)

Visible area ratio 57% 51% 47%

★ Large cup holder and power supply Cup holder Cigar lighter
Large cup holder is placed at the left side of
operator’s seat for operator convenience. In
addition, 12V power supply is also provided in the m
6m
cab. 77. 25"
6
3.0

Ash tray 12V power supply

★ Reduced noise at operator’s ears

Noise at operator’s ears has been greatly reduced
due to utilization of hydraulic driven cooling fan.

Model D65-15 D65-12 D6R

Item

Noise level at operator’s ears: Cab dB (A) 79 <76.7> 82 <82.6> - <81.1>

Noise level at operator’s ears: Canopy dB (A) 96 <93> 96 <94> - <94>

< >: Actually measured value

17
DELUXE LARGE CAB
5 COMFORT FEATURES
(OPTIONAL) CONTINUED ★ designates a key “new” feature ✩ designates a key “current” feature

★ Excellent Visibility
Front visibility has been improved, since precleaner cap and exhaust pipe have been relocated into blind
area of front visibility.

Front and Rear Visibility Comparison

D65-15 D6R
Front Visibility Front Visibility

Rear Visibility Rear Visibility

18
COMFORT FEATURES 5
LARGE-CAPACITY AIR
★ designates a key “new” feature ✩ designates a key “current” feature CONDITIONER (OPTIONAL)

★ Large Capacity Air Conditioner

Large capacity air conditioner utilized for A/C
comfortable operation even in extreme cold or
extreme hot environments
OFF LO HI

Air Conditioner Control FVDM1231

Model D65-15 D65-12 D6R

Item
Cooling capacity, SAE 7,200 kcal/h (28,570 Btu) 5,600 kcal/h (22,220 Btu) 7,500 kcal/h (29,760 Btu)

Heating capacity, SAE 7,150 kcal/h (28,370 Btu) 5,200 kcal/h (20,630 Btu) 9,600 kcal/h (38,090 Btu)

Cooling ability* 21 deg. C (37.8 deg. F) 18 deg. C (32.4 deg. F) 17.7 deg. C (31.9 deg. F)

Time for cool down** 33 min. 40 min. 36 min.

Type of control panel Touch panel Dial type Lever type

* Cooling ability means that temperature inside cab can be lowered ** Cool down time means that it takes that amount of time to lower
that many degrees below atmospheric temperature. temperature above.
Example: New D65-15 has cooling capacity 21 deg. C (37.8 deg.
F) lower than the atmospheric temperature. When atmospheric
temperature is 45˚C (113˚F), temperature inside cab can be
lowered to 24˚C (75.2˚F).
45˚C – 21˚C = 24˚C

✩ Pressurized Cab With Optional Air Conditioner

The airtight cab prevents entry of dust even in a Model
D65-15 D65-12 D6R
dusty environment. Since the airtightness of the Item
sliding window and door seal is improved, the
Pressurized 8.8 5.0 8.0
internal pressure is increased to 8.8 mmAq (0.35 in value [mmAq (in Aq)] (0.35) (0.20) (0.32)
Aq) when the air conditioner is operated (in the
fresh-air-in mode). This internal pressure prevents
dust from entering the cab.

EASY-TO-SEE MONITOR
PANEL

★ Easy-to-see monitor panel [1] [2] [3] [5]

The newly designed monitor displays engine rpm

and forward/reverse gear during operation. When [4] [6]

a critical “action code” is displayed, caution lamp

blinks and warning buzzer sounds to prevent the
Character display
occurrence of serious problems.
Monitor also continuously displays engine coolant
MONITOR SYSTEM

temperature, power train oil temperature, hydraulic

oil temperature and fuel level.
FZDM1396

19
ELECTRICAL WIRING
6 RELIABILITY AND DURABILITY
FEATURES
★ designates a key “new” feature ✩ designates a key “current” feature

★ DT-type electric connectors

Waterproof seal
Conventional connectors in the control lines to
engine and main components on chassis have
been replaced with DT-type connectors, which Waterproof seal
stay on tight and are more reliable.

Waterproof seal

FVPM2703

ENGINE AND HYDRAULIC

OIL FILTER

★ The replacement interval of the oil and filters is Since the high-performance filtration material has finer
extended by employing high-performance filtration fibers and more pores, the dirt capturing capacity of
material. the filter is increased.

(1) Hydraulic oil filter (2) Engine oil filter

The filtering capability is improved and the filter The filter paper is changed from the cellulose type to
size is reduced by using microglass (high- strata pore type having higher dirt capturing capacity.
performance filtration material).
450 (17.7")

200 (7.9")

Conventional hydraulic New hydraulic oil filter

oil filter
Conventional New hydraulic
hydraulic oil filter oil filter
FZPM2775

20
RELIABILITY AND DURABILITY
FEATURES 6
★ designates a key “new” feature ✩ designates a key “current” feature O-RING FACE SEAL

★ O-ring face seal

The hydraulic hose seal method has been
changed from a conventional taper seal to the
O-ring face seal. This provides improved sealing
performance during vibration and shock loads.

FZPM2908

BUILT-IN BLADE TILT

PIPING

✩ Completely built-in blade tilt piping

The blade tilt piping is built into the straight frame
to protect it from damage.
Model
Item D65-15 D65-12 D6R

Blade tilt piping Built-in Built-in Partially

exposed

21
 7
NEW MONITOR WITH SELF-
EASY MAINTENANCE
DIAGNOSTIC FUNCTION ★ designates a key “new” feature ✩ designates a key “current” feature

★ New Monitor with Self-diagnostic Function

The new monitor displays gear shift, engine rpm, preset shift and filter and oil replacement time.
With starting switch turned ON, the monitor and forward/reverse gear speed on the upper part
displays P (parking) on the upper part of the of the display during operation. When error occurs
display, service meter on the lower part of the during operation, action code is displayed on
display and Check-before-starting and caution character display. When a critical action code is
items appear on the right part of the liquid crystal shown, a caution light blinks and warning buzzer
panel. If the monitor finds abnormalities, sounds to prevent the development of serious
corresponding warning light blinks and warning problems.
buzzer sounds. The monitor displays engine rpm

[1] [2] [3] [5]

[4] [6]

Character display

MONITOR SYSTEM

FZDM1396

Gauge module Caution module

[1] Engine speed (1) Battery charge
[2] Forward/reverse speed display (2) Engine oil pressure
[3] Coolant temperature
(3) Coolant temperature
[4] Power train oil temperature
[5] Hydraulic oil temperature (4) Power train oil temperature
[6] Fuel level (5) Hydraulic oil temperature display
(6) Engine pre-heating indicator
(7) Oil and filter replacement time
[This blinks up when passing oil and filter
replacement time.]
(8) Warning lamp (Red)
This lamp lights up together with caution (1) to (6).
(9) Oil and filter maintenance (Yellow)
[This lights up when oil and element replacement
time is less than 30 hours and blinks when
replacement time is reached.]
(10) Fan operation confirmation lamp.

22
EASY MAINTENANCE 7
NEW MONITOR WITH SELF-
★ designates a key “new” feature ✩ designates a key “current” feature DIAGNOSTIC FUNCTION
CONTINUED

★ Display Method of Maintenance Mode

D65-15’s monitor has a Maintenance Mode carried out as follows. Normal display mode can
function that consists of Oil/Filter Maintenance be changed into Maintenance Mode by turning
Mode, PM Clinic Mode, Fault Code Display Mode and holding the selection switch.
and Adjustment Mode. Selection of each mode is

< Left cursor switch

< Right cursor switch
Select switch
Cancel switch

Return to normal mode Turn select switch 2.5 seconds,

with cancel switch message display is changed

1-OIL, FILTER
MAINTENANCE MODE
<
<
< <
2-PM CLINIC 4-USER ADJUST
MODE MODE
< <
< <
3-FAULT CODE
DISPLAY MODE
FZDM101901

Function of each mode

1. Oil/Filter Maintenance Mode: Oil and filter replacement time are displayed to be managed.
2. PM Clinic Mode: Engine RPM and hydraulic pressure etc. are numerically displayed.
3. Fault Code Display Mode: Controller informs some troubles by six digits.
4. User Adjust Mode: Can adjust brightness of display.

23
GULL-WING ENGINE SIDE
7 EASY MAINTENANCE
COVERS ★ designates a key “new” feature ✩ designates a key “current” feature

★ Gull-Wing Engine Side Covers

The opening angle of gull-wing engine side covers

is improved to facilitate engine maintenance and
filter replacement.
Model
Item D65-15 D65-12 D6R

Type of engine side cover Gull-wing Gull-wing Hinged

Opening angle of cover 150 deg. 80 deg. –

Gull-wing engine side covers Corrosion resister Air cleaner

Fuel filter Engine oil Engine oil

level gauge filter

★ Easy Closing of the Side Cover

Engine side covers are easily closed by pushing
lock-release button located at the middle of gas
spring cylinder.

24
EASY MAINTENANCE 7
ENGINE AIR INTAKE PIPE
★ designates a key “new” feature ✩ designates a key “current” feature WITH RAIN CAP

★ Engine Air Intake Pipe with Rain Cap intake pipe also reduces the introduction of
Engine air intake pipe added to reduce dust moisture into the air filter extending the cleaning
accumulation in the air filter. A rain cap on the interval of the air filter element.

Rain cap

Hood Dust, drop Hood

Air cleaner Air cleaner

D65-15 D65-12 FVDM1400

CENTRALIZED SERVICE
STATION

✩ Centralized Pressure Check Ports

Power train oil pressure check ports are centrally
located, oil pressure checks are easily carried out
by opening maintenance cover.
The pressures check ports for main hydraulic
pump and load sensing of hydraulic control valve
are now included in the centralized service station.

25
 7
EASY AIR CLEANER CHECK
EASY MAINTENANCE
★ designates a key “new” feature ✩ designates a key “current” feature

★ New Dust Indicator

D65-15 uses a new dust indicator which indicates estimate next cleaning timing easily compared
air cleaner clogging status gradually. It is possible with conventional one.
to check dust accumulation condition and to

D65-15 D65-12
PUSH BUTTON TO RESET

FILTER
15
20
25
30
CHANGE

Gradually indicated with scale Status is not displayed until clogged

[Intake resistance 762mm H2O(30 in H2O)]

FZDM1071

MAINTENANCE FREE DISC

BRAKES

✩ Maintenance free disc brakes

Wet type disc brakes require less maintenance.

Sprocket

Wet, multiple-disc brake

26
EASY MAINTENANCE
7
REVERSIBLE RADIATOR FAN
★ designates a key “new” feature ✩ designates a key “current” feature

★ The engine fan is driven hydraulically. It can be the rear side of the radiator. Consequently, the
operated in reverse with the fan rotation selector cleaning interval of the cores can be greatly
switch in the operator’s cab to blow off the dirt from extended.

Usual operation Cleaning operation (Reverse rotation)

Air flow Air flow

Fan motor Fan motor

Engine Engine

Radiator Radiator
Fan pump Dust Fan pump
Dust

Test result of air flow recovery through rotating fan in reverse

Test result of air flow (as a rate of 100% of clean radiator)
Dead leaves: Recovery from 89.5% to 97.9%
Sawdust: Recovery from 81.7% to 88.6%
Test method:
1. Measure air flow of radiator in normal condition. 3. Measure air flow of radiator in clogged condition.
2. Method for forcibly clogging radiator fin: 4. After cleaning radiator by using fan reverse
(1). Dead leaves: Spray 5 kg (11.0 lbs) of dead rotation for one minute, measure air flow.
leaves at engine half throttle, then temporary
stop engine.
(2). Saw dust: At engine half throttle, spray 3 ltr
(0.8 U.S. gal) of anti-freeze and spray sawdust
to clog radiator. Then, remain this condition for
one night.

0 20 40 60 80 100% Air flow

Clean radiator, no clogging 100

Forcibly clogged radiator with dead leaves 89.5

Dead leaves
After cleaning clogged dead leaves 97.9

Clean radiator, no clogging 100

Forcibly clogged radiator with sawdust 81.7

Sawdust
After cleaning clogged sawdust 88.6

27
 7
ELIMINATION OF FAN BELT
EASY MAINTENANCE
TENSION ADJUSTMENT ★ designates a key “new” feature ✩ designates a key “current” feature

★ No fan belt tension adjustment

The D65-15 uses a hydrostatic driven fan, fan is tension adjustment and replacement are
driven directly by a hydraulic motor, so fan belt eliminated.

WORKING LIGHTS WITH

REPLACEABLE BULB

★ Working Lights with Replaceable Bulb

Bulb
The front and rear working lights use economical
replaceable bulbs. It is not necessary to replace
whole light assembly.

FVDM0786

28
ENVIRONMENTAL FEATURES 8
LOW EMISSION ENGINE
★ designates a key “new” feature ✩ designates a key “current” feature

★ The SA6D125E-3 engine is Tier 2 emission Tier 2 emission regulations

certified in USA, and Europe and Japan. The quantity of NOx and PM (Particulate) must be the
following values or below.
Regulation values
EU regulation EPA regulations
Unit
Regulated substances Output range of engine
kW 130 – 225 130 – 225
CO g/kW-h 5.0 5.0
Exhaust gas NOx/HC g/kW-h 6.0/1.0 6.4 (Including HC)
Particulate g/kW-h 0.2 0.3
Tier 2 emission 2002 2003

29
 9
D65EX/WX-15 vs. Competitive Machines
COMPARATIVE SPECIFICATIONS

Item Manufacturer KOMATSU KOMATSU KOMATSU CATERPILLAR

D65EX-15 D65EX-15 D65WX-15 D6R XL II
Model (New) (New) Long Track (New) Differential
FLYWHEEL HORSEPOWER:
SAE J1349 HP (kW)/rpm 190 (142)/1950 190 (142)/1950 190 (142)/1950 183 (136)/2000
DIN 6270 PS (kW)/rpm 193 (142)/1950 193 (142)/1950 193 (142)/1950 —
OPERATING WEIGHT* kg(lb) 20080 20820 20940 18709
(44,270) (45,900) (46,160) (41,252)
PERFORMANCE:
Travel speed km/h (MPH)
Forward: 1st 3.9 (2.4) 3.9 (2.4) 3.9 (2.4) 3.8 (2.4)
2nd 6.8 (4.2) 6.8 (4.2) 6.8 (4.2) 6.6 (4.1)
3rd 10.6 (6.6) 10.6 (6.6) 10.6 (6.6) 11.5 (7.1)
4th — — — —
5th — — — —
6th — — — —
Reverse 1st 5.0 (3.1) 5.0 (3.1) 5.0 (3.1) 4.8 (3.0)
2nd 8.6 (5.3) 8.6 (5.3) 8.6 (5.3) 8.4 (5.2)
3rd 13.4 (8.3) 13.4 (8.3) 13.4 (8.3) 14.6 (9.1)
4th — — — —
BULLDOZER EQUIPMENT:
Blade: Capacity (SAE) * m3 (cu.yd) 5.61 (7.34) 5.61 (7.34) 6.20 (8.10) 5.61 (7.34)
Length * mm (ft.in) 3460 (11'4") 3460 (11'4") 3970 (13'0") 3260 (10'8")
Height * mm (ft.in) 1425 (4'8") 1425 (4'8") 1100 (3'7") 1412 (4'8")
Max. lift above ground * mm (ft.in) 1105 (3'8") 1105 (3'8") 1105 (3'8") 1195 (3'11")
Max. drop below ground * mm (ft.in) 440 (1'5") 440 (1'5") 440 (1'5") 459 (1'6")
DIMENSIONS: mm (ft.in)
Overall length * 5440 (17'10") 5845 (19'2") 5440 (17'10") 5330 (17'6")
Overall width * 2390 (7'10") 2390 (7'10") 2082 (6'10") 2440 (8'0")
(less blade and trunnion)
Overall height * 3220 (10'7") 3220 (10'7") 3220 (10'7") 3195 (10'6")
Ground clearance 405 (1'4") 405 (1'4") 405 (1'4") 383 (1'3")
Track gauge 1880 (6'2") 1880 (6'2") 2050 (6'9") 1880 (6'2")
Length of track on ground 2675 (8'9") 3285 (10'9") 2675 (8'9") 2821 (9'3")
ENGINE:
Model Komatsu Komatsu Komatsu Caterpillar
SA6D125E-3 SA6D125E-3 SA6D125E-3 C9
Type Direct injection Direct injection Direct injection Direct injection
Turbocharged Turbocharged Turbocharged Turbocharged
Aftercooled Aftercooled Aftercooled Aftercooled
No. of cylinders – mm (in) 6 -125 x 150 6 -125 x 150 6 -125 x 150 6 -112 x 149
bore x stroke (4.92 x 5.91) (4.92 x 5.91) (4.92 x 5.91) (4.4 x 5.9)
Piston displacement ltr (cu.in) 11.04 (674) 11.04 (674) 11.04 (674) 8.8 (537)
POWER TRAIN:
Torque converter, Damper Single-stage T/C Single-stage T/C Single-stage T/C Single-stage T/C
or Main clutch
Transmission Planetary gear Planetary gear Planetary gear Planetary gear
Multiple-disc clutch Multiple-disc clutch Multiple-disc clutch Multiple-disc clutch
Steering clutch Hydrostatic Hydrostatic Hydrostatic Differential
Brake Wet Wet Wet Wet
Multiple-disc Multiple-disc Multiple-disc Multiple-disc
Final drive Spur & planetary Spur & planetary Spur & planetary Planetary
Double reduction Double reduction Double reduction Single reduction
UNDERCARRIAGE:
No. of rollers (carrier/track) 2/7 2/8 2/7 1/7
Ground contact area * cm2 (sq.in) 27285 (4230) 33505 (5193) 43335 (6717) 31600 (4898)
Ground pressure * kg/cm2(PSI) 0.74 (10.5) 0.62 (8.82) 0.40 (5.69) 0.59 (8.39)
Max. width shoes mm (in) 660 (26) 610 (24) 810 (32) 610 (24)
Track seals Lubricated track Lubricated track Lubricated track Lubricated track
FUEL TANK REFILL CAPACITY ltr (USgal) 415 (110) 415 (110) 415 (110) 382 (101)
*) SPEC. CONDITIONS
Bulldozer Semi-U Dozer Semi-U dozer Straight Tilt & Semi-U Dozer
Semi-U Dozer
Rear attachment — — Ripper or Cwt. —
Upper attachment ROPS & steel cab ROPS & ROPS & steel cab ROPS canopy
steel cab
Shoes: Width mm (in) 510 (20) 510 (20) 810 (32) 560 (22)
Type Single Single Single Single
Refer No. HESS1432 HESS1432 AESS625-01 NOV 2002-355

30
COMPARATIVE SPECIFICATIONS 9
CATERPILLAR JOHN DEERE JOHN DEERE LIEBHERR
D6R XW II 850C LT II 850C WT II PR732B
Differential

183 (136)/2000 185 (138)/1800 185 (138)/1800 177 (132)/1800

— — — 180 (132)/1800
19904 18402 18668 17750
(43,888) (40,485) (41,070) (39,130)

3.8 (2.4) 11.0 (6.8) 11.0 (6.8) 11.0 (6.8)

6.6 (4.1) — — —
11.5 (7.1) — — —
— — — —
— — — —
— — — —
4.8 (3.0) 11.0 (6.8) 11.0 (6.8) 11.0 (6.8)
8.1 (5.2) — — —
14.6 (9.1) — — —
— — — —

5.62 (7.35) 5.69 (7.44) 4.47 (8.06) 4.95 (6.47)

3556 (11'8") 3259 (10'8") 3556 (11'8.5") 3400 (11'2")
1412 (4'8") 1435 (4'8") 1435 (4'8") 1300 (4'3")
1195 (3'11") 1100 (3'7") 1100 (3'7") 1120 (3'8")
459 (1'6") 513 (1'8") 513 (1'8") 485 (1'7")

5330 (17'6") 5262 (17'3") 5262 (17'3") 5320 (17'5")

2740 (9'0") 2490 (8'2") 2997 (9'10") 2388 (7'10")

3195 (10'6") 3151 (10'4") 3151 (10'4") 3240 (10'8")

383 (1'3") 406 (1'4") 406 (1'4") 474 (1'7")
2030 (6'8") 1880 (6'2") 2235 (7'4") 1880 (6'2")
2821 (9'3") 2743 (9'0") 2743 (9'0") 2675 (8'9")

Caterpillar John Deere John Deere Liebherr

C9 6081A 6081A D926T-E
Direct injection Direct injection Direct injection Direct injection
Turbocharged Turbocharged Turbocharged Turbocharged
Aftercooled After cooled After cooled —
6 -112 x 149 6 - INA 6 - INA 6 - 122 x 142
(4.4 x 5.9) INA INA (4.80 x 5.59)
8.8 (537) 8.10 (494) 8.10 (494) 10.00 (610)

Single-stage T/C Hydrostatic drive Hydrostatic drive Hydrostatic drive

Planetary gear HST HST HST

Multiple-disc clutch
Differential Hydrostatic Hydrostatic Hydrostatic
Wet Wet disc Wet disc Hydrostatic
Multiple-disc
Planetary Planetary gear Planetary gear Planetary gear
Single reduction Double reduction Double reduction Double reduction

1/7 2/7 1/7 1/6

42880 (6646) 33445 (5184) 41806 (6480) 27200 (4216)
0.46 (6.54) 0.55 (7.82) 0.44 (6.3) 0.65 (9.24)
610 (24) 610 (24) 762 (30) 610 (24)
Lubricated track Lubricated track Lubricated track Lubricated track
382 (101) 348 (92) 348 (92) 375 (99)

Semi-U Dozer Semi-U dozer Semi-U dozer Semi-U dozer

— Rigid drawbar Rigid drawbar Rigid drawbar

ROPS canopy ROPS canopy ROPS canopy ROPS cab

760 (30) 610 (24) 610 (24) 508 (20)

Single Single Single Single
NOV 2002-355 MAR 2001-341 MAR 2001-341 AUG 1998-324

31
 9
D65PX-15 vs. Competitive Machines
COMPARATIVE SPECIFICATIONS

Item Manufacturer KOMATSU KOMATSU CATERPILLAR JOHN DEERE LIEBHERR

D65PX-15 D65PX-12 D6R LGP II 850C LGP II PR732B-M
Model (New) (Current) Differential
FLYWHEEL HORSEPOWER:
SAE J1349 HP (kW)/rpm 190 (142)/1950 190 (142)/1950 183 (136)/2000 185 (138)/1800 177 (132)/1800
DIN 6270 PS (kW)/rpm 193 (142)/1950 193 (142)/1950 — — 180 (132)/1800
OPERATING WEIGHT* kg(lb) 20800 20315 20447 19113 19200
(45,860) (44,790) (45,086) (42,080) (42,330)
PERFORMANCE:
Travel speed km/h (MPH)
Forward: 1st 3.9 (2.4) 3.9 (2.4) 3.8 (2.4) 11.0 (6.8) 11.0 (6.8)
2nd 6.8 (4.2) 6.8 (4.2) 6.6 (4.1) — —
3rd 10.6 (6.6) 10.6 (6.6) 11.5 (7.1) — —
4th — — — — —
5th — — — — —
6th — — — — —
Reverse 1st 5.0 (3.1) 5.0 (3.1) 4.8 (3.0) 11.0 (6.8) 11.0 (6.8)
2nd 8.6 (5.3) 8.6 (5.3) 8.1 (5.2) — —
3rd 13.4 (8.3) 13.4 (8.3) 14.6 (9.1) — —
4th — — — — —
BULLDOZER EQUIPMENT:
Blade: Capacity (SAE)* m3 (cu.yd) 3.69 (4.83) 3.69 (4.83) 3.70 (4.83) 5.46 (7.14) 4.10 (5.36)
Length* mm (ft.in) 3970 (13'0") 3970 (13'0") 3990 (13'1") 3978 (13'1") 4000 (13'1")
Height* mm (ft.in) 1100 (3'7") 1100 (3'7") 1101 (3'7") 1113 (3'8") 1150 (3'9")
Max. lift above ground* mm (ft.in) 1105 (3'8") 1105 (3'8") 1083 (3'7") 1080 (3'7") 1180 (3'10")
Max. drop below ground* mm (ft.in) 540 (1'9") 540 (1'9") 655 (2'2") 429 (1'5") 520 (1'8")
DIMENSIONS: mm (ft.in)
Overall length* 5520 (18'1") 5520 (18'1") 5465 (17'11") 5651 (18'6") 5395 (17'8")
Overall width* 2965 (9'9") 2965 (9'9") 3140 (10'4") 3200 (10'6") 2992 (9'10")
(less blade and trunnion)
Overall height* 3220 (10'7") 3165 (10'5") 3245 (10'8") 3151 (10'4") 3240 (10'8")
Ground clearance 405 (1'4") 405 (1'4") 433 (1'5") 406 (1'4") 474 (1'7")
Track gauge 2050 (6'9") 2050 (6'9") 2225 (7'4") 2235 (7'4") 2180 (7'2")
Length of track on ground 3285 (10'9") 3285 (10'9") 3243 (10'8") 3073 (10'1") 3080 (10'1")
ENGINE:
Model Komatsu Komatsu Caterpillar John Deere Liebherr
SA6D125E-3 S6D125E-2 C9 6081A D926T-E
Type Direct injection Direct injection Direct injection Direct injection Direct injection
Turbocharged Turbocharged Turbocharged Turbocharged Turbocharged
Aftercooled — Aftercooled After cooled —
No. of cylinders – mm (in) 6 -125 x 150 6 -125 x 150 6 -112 x 149 6 - INA 6 - 122 x 142
bore x stroke (4.92 x 5.91) (4.92 x 5.91) (4.4 x 5.9) INA (4.80 x 5.59)
Piston displacement ltr (cu.in) 11.04 (674) 11.04 (674) 8.8 (537) 8.10 (494) 10.00 (610)
POWER TRAIN:
Torque converter, Damper Single-stage T/C Single-stage T/C Single-stage T/C Hydrostatic drive Hydrostatic drive
or Main clutch
Transmission Planetary gear Planetary gear Planetary gear HST HST
Multiple-disc clutch Multiple-disc clutch Multiple-disc clutch
Steering clutch Hydrostatic Hydrostatic Differential Hydrostatic Hydrostatic
Brake Wet Wet Wet Wet disc Hydrostatic
Multiple-disc Multiple-disc Multiple-disc
Final drive Spur & planetary Spur & planetary Planetary Planetary gear Planetary gear
Double reduction Double reduction Single reduction Double reduction Double reduction
UNDERCARRIAGE:
No. of rollers (carrier/track) 2/8 2/8 1/8 2/7 2/8
Ground contact area* cm2 (sq.in) 60115 (9318) 60115 (9318) 59300 (9192) 59329 (9196) 50000 (7750)
Ground pressure* kg/ 0.35 (4.98) 0.34 (4.83) 0.34 (4.83) 0.32 (4.55) 0.38 (5.40)
Max. width shoes cm2(PSI) 950 (37) 950 (37) 1000 (39) 965 (38) 965 (38)
Track seals mm (in) Lubricated track Lubricated track Lubricated track Lubricated track Lubricated track
FUEL TANK REFILL CAPACITY ltr (USgal) 415 (110) 406 (107) 382 (101) 348 (92) 375 (99)
*) SPEC. CONDITIONS
Bulldozer Straight-tilt dozer Straight-tilt dozer Straight-tilt dozer Semi-U dozer Straight-tilt dozer

Rear attachment — — Rigid drawbar Rigid drawbar Rigid drawbar

Upper attachment ROPS & steel cab ROPS canopy & ROPS canopy ROPS canopy ROPS cab
steel cab
Shoes: Width mm (in) 915 (36) 915 (36) 965 (36) 965 (38) 812 (32)
Type Single Single Single Single Single
Refer No. HESS1432 HESS143107 NOV 2002-355 MAR 2001-341 AUG 1998-324

32
ATTACHMENTS AND OPTIONAL
EQUIPMENT
Front attachments Cab interiors
10
Angledozer (EX) Air conditioner
Straight-tilt dozer Heater and defroster
Power-tilt power-pitch dozer (PX) Suspension seat, fabric
Semi-U dozer (EX) Suspension seat, fabric, high backrest
3m (10ft) width semi-U dozer (EX) Radio with cassette
Fire extinguisher
Rear attachments Seat belt
Fixed type multi-shank ripper First aid kit
Hitch
Drawbar Track shoes
Towing winch 510 mm (20") single grouser shoes (EX)
560 mm (22") single grouser shoes (EX)
Guards 610 mm (24") single grouser shoes (EX)
ROPS for cab 560 mm (22") single grouser shoes (EX-Long track)
FOPS.ROPS canopy 610 mm (24") single grouser shoes (EX-Long track)
Steel cab (FOPS) 950 mm (37.4") circular arc shoes (PX)
915 mm (36") single grouser shoes (PX)
Engine related
Alternator (75 A) Others
Large capacity batteries (200 Ah) Additional front light on cab
Starting motor (11kW) Additional rear light on cab
Pre-cleaner Vandalism protection, panel cover
Additional fuel filter Back-up alarm
Water separator Overall and cap
Tool kit
Spare parts for first service
Additional working light (Rear)
Long track arrangement (EX)
Front pull hook
Accumulator for PPC circuit

33
 11 INTERCHANGEABILITY
Interchangeability between New D65EX/PX-15 and D65EX/PX-12
Remarks New Current: New parts are usable on current model and vice versa.
New Current: New parts are not usable on current model and vice versa.
Part Name Interchangeability Remarks Common with
Engine assembly New Current Engine changed (S6D125 → SA6D125E)
Fuel injection pump New Current Common rail injection pump used
Water pump New Current
Starting motor New Current
Alternator New Current Capacity increased (35A → 50A)
Turbocharger New Current Engine changed
Air conditioner compressor New Current
Damper assembly New Current
Universal joint New Current Capacity increased. Maintenance free
PTO assembly New Current Install fan drive pump.
Torque converter assembly New Current
Transmission assembly New Current Clutch linings changed
Transmission control valve assembly New Current ECMV used
HSS & brake assembly New Current Bevel gear speed sensor added
Steering PPC New Current Discontinued
Brake valve New Current
HSS pump Capacity increased
Unit

New Current
HSS motor New Current Changed for increased RPM
Fan drive pump Newly added
Fan drive motor Newly added
Power train pump assembly New Current
Scavenging pump assembly New Current
Hydraulic control valve New Current Add EPC for steering
Blade lift cylinder New Current Use flat face seal
Blade tilt cylinder New Current Use flat face seal
Ripper lift cylinder New Current Use flat face seal
Radiator assembly New Current Engine changed
Fuel tank New Current Cab and external design changed
Final drive assembly New Current Gears changed
Track frame assembly New Current Equalizer pin bracket changed
Track shoe assembly New Current
Dash panel assembly New Current Changed for new cab
Pivot shaft New Current
Equalizer bar New Current
Cab New Current New cab used
operator compartment
Attachments around

Air conditioner New Current Capacity increased

Heater New Current Air conditioner changed
Operator seat New Current Installation height changed
ROPS for cab New Current Cab changed
ROPS canopy New Current Cab changed
Monitor panel New Current New monitor used for PCCS

34
INTERCHANGEABILITY 11
Remarks New Current: New parts are usable on current model and vice versa.
New Current: New parts are not usable on current model and vice versa.
Part Name Interchangeability Remarks Common with
Angle dozer New Current
Front work
equipment

Straight-tiltdozer for PX New Current Step added*1

Semi U-dozer New Current Step added*1
Blade only New Current
Front pull hook New Current
Drawbar assembly New Current
equipment
Rear work

Multi-shank ripper assembly New Current Cylinder changed*2

Towing winch New Current
Fair lead New Current
PTO shaft New Current
D85-15, HM300
Engine oil filter New Current Engine changed WA470/480-5
Corrosion resistor New Current
Periodic replacement

Air cleaner element New Current Type changed

parts (filters)

Fuel filter D85-15, HM300

New Current Engine changed WA470/480-5
Power train oil filter New Current
Hydraulic oil filter New Current Capacity increased
Air conditioner filter, for fresh air New Current
PC200/300-7
Air conditioner filter, for circulation New Current WA380-5
Track shoes New Current
Consumable parts
(undercarriage)

Link assembly New Current

Track roller assembly New Current
Carrier roller assembly New Current
Idler assembly New Current
Sprocket teeth New Current
Consum-
parts
able

Fan belt Discontinued due to use of hydraulic drive

Cutting edge
Consumable Consumable parts

New Current
parts (lining) (work equipment)

End bits New Current

Ripper point New Current

Ripper shank New Current

Brake disc New Current

Transmission clutch disc New Current Material changed

*1: Possible to install current dozer on the new machine when

step added.
*2: Possible to install current assembly on the new machine and
vice-versa when hydraulic cylinder changed.

35
. 12 TRANSPORTATION GUIDE

D65EX-15
Dimension Weight Overall length (L) Overall width (W) Overall height (H)
Item kg (lb) mm (ft.in.) mm (ft.in.) mm (ft.in.)
Tractor* 16352 (36,050) 4335 (14'3") 2390 (7'10") 3220 (10'7")
Semi U-dozer** 3002 (6,620) 3460 (11'4") 1550 (5'1") 860 (2'10")
Straight-tilt dozer** 2721(6,000) 3415 (11'2") 1450 (4'9") 700 (2'4")
*: With 510 mm (20") shoes, ROPS and cab.
**: Including blade, edges, straight-frames, blade links and tilt cylinder.

D65PX-15
Dimension Weight Overall length (L) Overall width (W) Overall height (H)
Item kg (lb) mm (ft.in.) mm (ft.in.) mm (ft.in.)
Tractor* 17327 (38,200) 4485 (14'9") 2743 (9') 3220 (10'7")
Straight-tilt dozer** 2744 (6,050) 3970 (13') 1410 (4'8") 700 (2'4")
*: With 915 mm (36") shoes, ROPS and cab.
**: Including blade, edges, straight-frames, blade links and tilt cylinder.

D65WX-15
Dimension Weight Overall length (L) Overall width (W) Overall height (H)
Item kg (lb) mm (ft.in.) mm (ft.in.) mm (ft.in.)
Tractor* 17173 (37,860) 4335 (14'3") 2464 (8'1") 3220 (10'7")
Semi-U dozer** 2744 (6,050) 3415 (11'2") 2464 (8'1") 860 (2'10")
Straight-tilt dozer** 3002 (6,620) 3460 (11'4") 2464 (8'1") 700 (2'4")
*: With 810 mm (32") shoes, ROPS and cab.
**: Including blade, edges, straight-frames, blade links and tilt cylinder.

TRACTOR

W
FVDM124401

BLADE

W
Blade
Frame
H

FLD00430
Arm, brace,
tilt cylinder

36
 This information has been gathered to provide data on the performance of KOMATSU and competitive
machines under actual job conditions. Every effort was made to ensure reliable results. However,
because of the many variables peculiar to each job (including material characteristics, operator effi-
ciency, labor and other costs, haul road conditions and altitude), neither KOMATSU LTD., nor any of its
subsidiaries or distributors can or does warrant expressly or implicitly that Komatsu or competitive
equipment referred to will achieve the performance or incur the costs indicated under other, though
similar, circumstances.

The information contained herein is intended for circulation only to Komatsu employees and to those
distributor employees, whose duties require knowledge of such reports and intended solely for the
information and training of these readers. UNAUTHORIZED USE OF THIS DOCUMENT IS HEREBY
PROHIBITED AND THOSE RESPONSIBLE FOR SUCH USE SHALL BE SOLELY RESPONSIBLE
FOR ANY DAMAGES WITH THIRD PARTIES THAT MAY INCUR AS A RESULT OF SUCH USE. Any
reproduction of this release without the foregoing explanation is prohibited.

AEPB355-00 ©2003 Komatsu Printed in USA D10(1.5M)CCI 10/03 (EV-1)

440 N. Fairway Dr.

Vernon Hills, IL 60061

www.komatsuamerica.com Materials and specifications are subject to change without notice

is a trademark of Komatsu Ltd. Japan