D155AX-6 DANTOTSU

Introducing the D155AX-6

Crawler Dozer

Sigma dozer
+ VMR
+ CAB
+ 560mm

D155-6 April 2006 New Product Service Training

 Design concept outline of modification
Main sales features No 1
OUTSTANDING PRODUCTIVITY & FUEL ECONOMY
SIGMADOZER with high production
Automatic transmission with torque converter lockup
Komatsu SAA6D140E-5 with high output and low fuel consumption
Long length of track on ground and wide track gauge
New K-Bogie undercarriage
EXCELLENT OPERABILITY
Palm Command Control System (PCCS)
Fuel control dial
Full adjustable seat and control console
Automatic transmission ( Automatic shift change mode )
OPERATOR COMFORT FEATURES
New K-Bogie and cab damper mount
Large size deluxe cab
Large multi-lingual LCD color monitor
Excellent visibility　 ( Front visibility, Rear visibility, Side visibility )

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 Design concept outline of modification
Main sales features No 2
EXCELLENT DURABILITY & RELIABILITY
Increase of undercarriage service life
Improved main frame rigidity
Improved track frame rigidity
High rigidity ROPS cab
New blade linkage
Improved fuel tank rigidity
Improved engine hood rigidity
Reliable hydraulic piping
EASY MAINTENANCE
New monitor panel with enhanced troubleshooting function
Easy check and maintenance around engine
Modular power train design
Reduced greasing points for work equipment
Gull-wing type inspection cover for battery
New dust indicator

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 Design concept outline of modification
Main sales features No 3
ENVIRONMENT FRIENDLY FEATURES
Tier 3 emission regulation certified engine
Reduced ambient noise
Reduced CO2 emission and harmful materials
ENHANCED TRANSPORTABILITY
COMPARISON OF PRODUCTION & FUEL CONSUMPTION
INTERCHANGEABILITY
COMPETITIVE SPECIFICATIONS
TRANSPORTATION GUIDE
Background of development
Current D155AX-5 has been highly evaluated in productivity, reliability and operating cost.

 In 2005, CAT has introduced new D8T which complies with EPA Tier 3 emission
regulation.
 D155AX-5 has partially become old, but has still superiority in work performance.

 New model is required to meet the Tier 3 emission regulations.

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 TFT : Thin Film Transistor
Walk Around LCD : Liquid Crystal Display

3. PCCS (Palm Command Control System)

* Electronic controlled PCCS travel control
1. SAA6D140E-5 turbocharged
* HSS (Hydraulic Steering System)
after-cooled diesel engine * Electronic controlled PCCS blade/ripper
control
2. Outstanding productivity 4. New integrated ROPS cab includes
* Large quiet operator environment
& fuel economy
* Comfortable ride with new cab damper
* Innovative sigma dozer * Pressurized cab
* Automatic transmission with
lock-up torque converter 5. Large TFT LCD monitor
6. New designed ripper
* Offers excellent ripper
visibility
Sigma dozer VGR : Variable giant ripper
VMR : Variable multi ripper

7. K-Bogie undercarriage system

8. Hydraulic drive radiator cooling fan * Increased- track length (7 roller)
* Improve traction, component durability,
9. Gull-wing engine side covers and operator comfort
Page5 - 101
 Product line comparison

Gross : 268 kw (360HP) at minimum fan speed

Net : 264 kw (354HP) at minimum fan speed
Net : 239 kw (320HP) at maximum fan speed

Note: Engine output shown are Net horsepower at the maximum speed of radiator cooling fan.

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 For your reference
Comparison of D155A CLASS (Semi-U + VMR)
Current machine
ITEM unit D155AX-6 D155AX-5 D155A-5 D155A-2
for middle east
Engine horse power HP/rpm 325/1900 310/1900 302/1900 320/2000
Operating weight Kg 39500 38800 38700 41000
Track gauge mm 2140 2100 2100 2140
Length of track on ground mm 3275 3210 3210 3150
Engine model SAA6D140E-5 SA6D140E-3 SA6D140E-2 SA6D140E-2
Power line : (T/C) T/C+L/U T/C T/C T/C
(T/M) ECMV ECMV Mechanical Mechanical
Steering HSS HSS CL & BR CL & BR
Lever PCCS PCCS Joystick Two levers
Under carriage Flexible ( 2/7 ) Flexible ( 2/6 ) Flexible ( 2/6 ) Rigid ( 2/8 )
Bogie type K-bogie X-bogie X-bogie
Blade (Height ×Width) mm×mm 4130×1790 3955×1720 3955×1720 4130×1790
Blade ( Capacity ) m3 (yd3) 9.4 (12.3) 8.8 (11.5) 8.8 (11.5) 9.4 (12.3)
Ripper (VMR) Weight Kg 3760 3710 3710 4915

D155AX-6 D155A-6
Dimension of D155AX-6
Unit : mm

3395
Sigma-9.4m3

STD:560 1850
950
OP:/610/660/710

3275 2745
2140 4860 1240
4060 8225

Strengthened sigma dozer = Sigma dozer + Wear plate

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D155AX-6 (Tire 3)

　 Ecology & economy technology 3

Komatsu has been developing and manufacturing in house both the construction
vehicles and engines: equipment since 1931 and diesel engines since 1935.
Supported by such experience, the ecot3 technology was developed aiming for
preservation of the Earth's environment (Ecology) and the customer's productivity
(Economy). What makes us successful is our strong technological capabilities and
power that integrates them into efficient machinery.
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1. SAA6D140E-5 turbocharged after-cooled diesel engine

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 High Pressure Common Rail injection system
(HPCR)

Advanced Common rail

• Injection pressure increased up to 1800 bar
• Multi-injection used (pre- and post-injection)

• Reduction of soot (PM)

• Low noise
• Increased low end Torque

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 Exhaust Gas Re circulation (EGR)
•Reduction of peak temperatures
and pressures Turbocharger Muffler
Intake Air

• Reduction of NOx
EGR Cooler
• Noise reduction

Air to Air After Cooler

Fan
Exhaust Manifold

EGR Valve Intake Manifold

Venturi

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2. SAA6D140E-5 turbocharged after-cooled diesel engine

Komatsu SAA6D140E-5 with high output, low fuel

consumption, and low emission

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 Productivity & Fuel Economy Features

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 Dozing production (1/4)
E mode, Automatic mode

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 Dozing production (2/4)
E mode, Automatic mode

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 Ripping + Dozing production (3/4)
E mode, Manual mode

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Ripping + Dozing production (4/4)
Test conditions E mode, Manual mode
Test model: (1)D155AX-6 : SIGMADOZER (with multi-shank ripper + ROPS cab)
(2)D155AX-5 : Semi-U dozer (with multi-shank ripper + ROPS & cab)
(3)D8T : Semi-U dozer (with multi-shank ripper + ROPS & cab)

Measured point

Test conditions
(1) Soil conditions: Sandstone
(2) Gradient: Almost flat
(3) Gear speed used: F1, R1
(4) Soil volume measurement method: We measured
the survey points shown in the figure with a level
before and after the test, and used their difference
to obtain the amount of soil to be dug. Piling
 SIGMADOZER with high production No 1

This machine is equipped with innovative-shape digging blade

“ SIGMADOZER “ based on the new digging theory.
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SIGMADOZER with high production No 2

SIGMADOZER Semi-U blade

Production increased by 15%

(compared with our conventional model)

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 SIGMADOZER with high production No 3

Start to
digging
Start to digging point point

Sideway spillage : Small Sideway spillage : Big

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 Concept of SIGMADOZER
• Increase in soil holding capacity

SUPER DOZER

Large
quantity
of soil

Reduced
SEMI-U
digging SIGMADOZER
BLADE
resistance
BUCKET Concept of SIGMADOZER
(ROCK) * Komatsu developed a new dozer with
excellent digging performance and large
soil holding capacity, focusing on the
•Dig at the front blades and buckets of existing models.
edge of the
blade •Blade of D475A-5 Super dozer which is
suitable for dozing large quantity of soil.
•Bucket of large-sized loader which can
dig at the front edge of the blade.

D155-6 April 2006 New Product Service Training Page 22 / 105

 Blade digging angle

D155AX-6
SIGMA DOZER
Dual tilt

+6
46 -2

D155AX-5, 6
SEMI-U Blade
Single tilt

52
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 Dual tilt dozer

Max pitch back Max pitch dump

44° 52°
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 Concept of SIGMADOZER
1. Dig the earth at the front edge of the blade first. 2. Soil wall will be formed by the teeth.

Concept of
buckets of
loaders.

Comparison of digging Distribution map of digging resistance.

resistance of the blade
Soil wall
SIGMA
DOZER

1. Dig with the center of the blade utilizing machine

traction power. Soil wall
2. Decrease digging loss at end bit.
Newly
Distribution map of digging resistance. introduced
Semi-U concept in the
Blade sigma dozer

1. Dispersing the traction power.

2. Increase in digging loss at the end bit.
3. Dozed soil at the end bit become left outside the blade.

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 SIGMA DOZER

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 Concept of SIGMADOZER
1. Large quantity of soil can be hold, because the angle of the blade lean
backward.

Concept of
super dozer. A

2. The blade can hold the soil

wall formed at (2) and doze the
soil without spillage.

Newly
introduced
concept in
sigma
dozer.
D155-6 April 2006 New Product Service Training Page 27 / 105
Bench test for SIGMA DOZER vs SEMI-U Blade
SEMI-U Blade

SIGMA DOZER

The unique design of the blade :

(1) Changes the shape of dozed material.
(2) Reduces sideway spillage and increase the dozing capacity.

D155-6 April 2006 New Product Service Training Page 28 / 105

 D155AX-6
Spill guard
(STD)
9.4 m3
1850 mm
SIGMA DOZER
36 mm

4060 mm

SEMI-U Blade 9.4 m3 1790 mm

40 mm
4130 mm

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 SIGMADOZER BLEDA with CASTING (1/2)

Wear plate

Casting steel

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 SIGMADOZER BLEDA with CASTING (2/2)

Advantage of casting steel

1. Enable to produce most
optimum shape blade
2. Increased reliability thanks to
fewer welding.
3. Increased durability thanks to
better anti-wear feature. Casting steel

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SIGMADOZER with high production No 4

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 SIGMADOZER with high production No 5
SIGMADOZER & blade section (1/2)

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 SIGMADOZER with high production No 6

SIGMADOZER & blade section (2/2)

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 E mode vs P mode
E mode
Suitable for ordinary work
Merits : Fuel efficiency  Improve

Default : E mode, Automatic mode

P mode
Horse power becomes a little bit higher,
This is suitable for dozing of very heavy
material, especially where track can hold
on tight to the ground. 　 Such as sticky
soil.
Merits : Productivity  High

Note : This mode is not suitable for rocky condition

D155-6 April 2006 New Product Service Training Page 35 / 105

 Automatic mode vs Manual mode
Automatic mode
If pre-set 2nd gear or above, gear
will be shifted to most optimum
position.
This mode is suitable for ordinary
work..

Manual mode
When the load becomes too heavy,
the gear will be shifted down.
( Shift up should be done by manual. )

This mode is suitable for dozing or ripping

in site where load varies from spot to spot.

D155-6 April 2006 New Product Service Training Page 36 / 105

 Optimum mode for various operations.
Engine power Production ratio Fuel consumption
Shift mode mode
Features Recommendable operation
(m3/h) ratio （L／ｈ）
Lock-up system will be selected in
Ordinal dozing
accordance with load.
Ｅ mode Fuel efficiency and productivity is high １．００ １．００
Automatic shift
in this mode
mode
Engine output is 10% higher than E Clayed ground
Ｐ mode This mode is suitable for heavy work １．０７ １．０７
Steep slope operation
which requires big power.
Lock-up system will not be selected in
Dozing for rough ground.
this mode.
Shift frequency is minimum within
Ｅ mode Ripping ０．９５ １．０５
torque converter range.
Narrow site where loads
Manual shift varies from spot.
mode Site which requires more
Engine output is 5% higher than E mode. power in above
Ｐ mode mentioned conditions. １．００ １．１０
This mode is suitable for heavy work
which requires big power.

Default : E mode, Automatic mode

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Pre-set mode (Automatic mode)
AUTO F1 – R1
Shift up Shift down

AUTO F1 – R2
Shift up Shift down

AUTO F2 – R2
Shift up Shift down
Shift up
button
AUTO F2 – R3L
Shift down
button Auto shift up and shift down
N position F3L-R3L are speed ranges where the
engine speed is controlled at 3rd speed
range is set to a range between 2nd and
D155-6 April 2006
3rd.
New Product Service Training Page 38 / 105
Pre-set mode (Manual mode)

F1 – R1
Shift up Shift down

F1 – R2
Shift up Shift down

Shift up button F2 – R2
Auto shift down only
Shift down button
1st, 2nd : No lock-up range,
3rd : Lock-up range,
N position
D155-6 April 2006 New Product Service Training Page 39 / 105
 Automatic transmission with torque converter
lockup achieves greater low fuel consumption (1/3)
D155AX-6 D155AX-5
Lock-up No lock-up
Mechanism
Power flow at torque converter lockup
Power flow at torque converter drive

Addition of lock-up Change of Gear train

mechanism to reduction ratio common to
in D155AX-5 D155AX-5
D155AX-5

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* Automatic transmission with lock-up torque converter

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 * HSS (Hydraulic Steering System)

D155AX-6 HSS System

is same as D155AX-5

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 Torque converter with Lock-up.
Torque converter range
Turbine Pump 100 HP 85 HP
Lock-up clutch Stator Stator clutch

Engine
T/C T/M

from Engine

Lock –up torque

T/M
converter range
100 HP 98 HP

Engine
T/M

L/U

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 Automatic transmission with torque converter lockup
achieves greater low fuel consumption
Travel performance curve

LU

LU
LU

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 D155AX- 6 Travel speed
1. E mode, Automatic mode D155AX- 5 ( )

(L/U) 3.7 5.0

(L/U) 6.7 8.2
(T/C)
(L/U) 11.0 13.9

2. E mode, Manual mode

Travel speed Forward Reverse
1 st (T/C) 3.8 km/h (2.4mph) 4.6 km/h (2.9mph)
2 nd (T/C) 5.5 km/h (3.4mph) 6.7 km/h (4.1mph)
3 rd (L/U) 11.6 km/h (7.2mph) 14.0 km/h (8.7mph)

D155-6 April 2006 New Product Service Training Page 45 / 105

Automatic transmission with torque converter lockup
achieves greater low fuel consumption

Power train types

Komatsu CAT
D155AX-6 D155AX-5 D8T

Torque converter Torque converter Torque converter Torque divider

with lockup

Transmission 3 forward/ 3 3 forward/ 3 3 forward/ 3

reverse speeds reverse speeds reverse speeds
Steering HSS HSS Differential
Automatic gearshift Equipped Not equipped Not equipped
mode

* Transmission shift change : 4 forward / 4

reverse
Automatic mode : F1, F2, F3L, F3, R1, R2, R3L, R3
Manual mode : F1, F2, F3, R1, R2, R3

D155-6 April 2006 New Product Service Training Page 46 / 105

 D155AX-6 Cab Concept
with Palm Command Control System
3. PCCS (Palm Command Control System)
Electronic
Monitor with
Self-Diagnostic
Function

Palm Command
Steering & Blade Lever
Transmission
Control Lever
Electronic
Throttle Dial Ripper Lever

Parking Lever

Lock Lever

Arm Rest

Operator Seat

D155-6 April 2006 New Product Service Training Page 47 / 105

3. PCCS (Palm Command Control System)
* Electronic controlled PCCS travel control
* HSS (Hydraulic Steering System)

* Electronic controlled PCCS

blade/ripper control

D155-6 April 2006 New Product Service Training Page 48 / 105

Outline of Electronic Control system

ECMV SC
ECMV LU

EPC
Palm command electronic controlled
travel control joystick D155AX-6 HSS & T/M System
is same as D155AX-5
Mechanism of travel control

Travel control joystick

702-16-02212
 Blade lever and Ripper lever
Float button Ripper lever

Lock lever
Blade lever

Potentiometer
Phone Pin puller SW
(702-16-02212)
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Blade lever of dual tilt dozer
 Blade lever of dual tilt dozer
FLOAT
Pitch dump
Press pitch button + RH tilt

PITCH

Pitch back
Press pitch button + LH tilt
 Blade lever Ripper lever

Potentiometer Potentiometer
(702-16-02241) (702-16-02251)
mV mV

Work equipment
controller
mA
mA
Monitor panel
Main valve
EPC valve

EPC valve

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 Fuel control dial D155AX-6 Fuel control dial
System is same as D155AX-5

• Easy fuel throttle adjustment • No mechanical linkage trouble

Fuel control dial

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4. New integrated ROPS cab includes

Large-size deluxe cab

75

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 Comfortable Ride with New Cab Damper Mounting
･ Cab Damper Mount provides excellent shock and vibration absorption capacity
with its long stroke.
･ The soft spring cab damper isolates the cab from machine body,
suppressing vibrations and providing a quiet, comfortable 17A-54-46130 (150000st) Red
operating environment.

Cab Damper Mount

D8T

Rear side viscous

Rubber

Front side viscous

17A-54-46120 (100000st) Black

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 New K-Bogie and undercarriage cab damper mount
offer riding comfort
Comparison of undercarriage and cab mount

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 Large-size deluxe cab
Comfortable air conditioning system
Large-capacity air conditioner and optimal air outlet positioning
Komatsu CAT
D155AX-6 D155AX-5 D8T
Cooling 4300 4300 4700
kcal/h
Air capacity (SAE) (6880) (6880) (7500)
conditioner Heating 5000 5500 -
kcal/h
capacity (SAE) (6500) (7150) (9600)
Air conditioner control - Touch panel Touch panel Dial
Number of air outlets piece 11 6 11
Automatic Manual Manual
Air mix
Air conditioner type -
(keeping one's head cool and full re-heat full re-heat
feet warm are possible)

Improved cab sealing

• Tight sealed with electric control joystick, no holes for mechanical
control linkage and hydraulic piping.
Komatsu CAT
D155AX-6 D155AX-5 D8T
Pressurized value mmAq (inchAq) 14.7 (0.58) 9.5 (0.37) 9.3 (0.37)

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Air conditioner panel D155AX-6 Air conditioner
system is same as PC200-8

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 OPERATION WITH COLD AIR TO FACE AND
WARM AIR TO FEET
To operate with cold air blowing to the face and warm air blowing to the
feet, set as follows.
1. Press fan switch (2) and adjust the a
air flow. When doing this,check
that temperature setting (a) and air
flow (b) are displayed on monitor . b

2. Press vent selector switch (4) and c

set the vent display on the display
monitor to the display shown in the
diagram on the right.
3. Turn air conditioner switch (8) ON. 3
2
4. Adjust fan switch (2), temperature Cool air 8
setting switch (3) and
RECIRC/FRESH selector switch 6 4
(6) to the desired positions.
Warm air
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　 AIR Front window defroster
CONDITIONER
Cool box

Hot water pick-up piping

Condenser

Receiver tank

Valve (hot water inlet) Refrigerant piping

Air conditioner compressor Valve (hot water outlet)

 Comfortable air conditioning system (2/3)
Large-capacity air conditioner and
optimal air outlet positioning

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Summer : Close
Winter : Open
Winter : Open

Summer : Close
 Space for Lunch box
Summer : Close Winter : Open

Cool ｅｒ box
 Large-size deluxe cab
Increased capacity of 12V accessory power supply
• Applicable to various device such as walkie-talkie

Auxiliary socket
Cup holder
60W (12V×12A) Ashtray

Cigarette lighter socket

120W (24V×5A)

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 Large-size deluxe cab
Remote lock lever for travel/work equipment controls
• Facilitates safety and convenience for operator.
• Interconnected with shut-off bar.

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 Lock lever Parking lever
Limit switch (11Y-06-22150)

You can start the engine

when light on parking lamp
and safety lamp.

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 Large-size deluxe cab
Floor mat with easy soil sweeping
• Suspended type brake and decelerator pedals offer floor with less projections.

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 Deceleration pedal
Brake pedal

Floor mat with easy soil sweeping

5. Large multi-lingual LCD color monitor
D155AX-6 Air conditioner
system is same as PC200-8

TFT : Thin Film Transistor

LCD : Liquid Crystal Display

• A large, user-friendly color monitor.

• Improved screen visibility by use of
TFT LCD.
• Industry first function keys enable
multi-function operation.
• Displays data in 10 languages.

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6. New designed ripper
Excellent visibility
This machine
provides superior
visibility so that the
operator can easily
check for the
safeness around
machine.

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7. New designed ripper
Superiority of D155AX-6 ripping work
Advantages of D155AX-6 ripper
[Digging range]
The digging range was extremely extended with newly designed ripper geometry.
It greatly improve the ripping capability combined with the high tractor performance.
D155AX-6 Visibility of ripper
 Camera (Option)
Purpose: To make sure the safety of rear

We are now developing a indicator

which displays the rear sight on a
monitor panel when the operator
put the PCCS lever reverse.
Excellent visibility (1/3)
Superior front visibility
Engine exhaust pipe and pre-cleaner are optimally arranged
to prevent the operator's view from being blocked.

Pre-cleaner Engine exhaust pipe

D155AX-6 D155AX-5 D8T

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Excellent visibility (2/3)
Superior side visibility
This machine uses the integrated ROPS cab structure
to ensure the operator's side views without ROPS
posts.
No ROPS post ROPS post

D155AX-6

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Excellent visibility (3/3)
Superior rear visibility
This machine uses two cylinder type ripper linkage especially
to ensure the outer-right shank view during ripping.

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7. K-Bogie undercarriage system

* Increased- track length (7 roller)

S D S D S D S

* Improve traction, component durability, and operator comfort

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 Long length of track on ground and wide track gauge
Major undercarriage specifications Unit: mm (ft.in)

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 New K-Bogie undercarriage
• Field proven undercarriage mounted on larger machines.
• Large oscillation travel well follows track rollers.
• Low drive system with fixed idler and sprocket provide
consistent actual track length on ground.

3275 3210 3207

7 rollers 6 rollers 8 rollers

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New K-Bogie undercarriage

D155AX-6 : K-Bogie High wall

D155AX-5 : X-Bogie

Bogie travel
Center of bogie
Greater clearance between
track guard and link pins.
 Increase of undercarriage service life (2/2)
New track link seal
• Oil leakage life is increased by 50%.

This seal was also used in the D155AX-5 machines

that were manufactured on the June 2005 or later.

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Full roller guard (Option)
 Improved mainframe rigidity
Plate thickness and cross-section strength are increased.

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 Improved track frame rigidity
The track frame cross-section dimensions are greatly increased.

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High-rigidity ROPS cab (1/2)
• Achieves long life, low noise and low vibration through improved rigidity.

ROPS pin

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High-rigidity ROPS cab

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 Cab mount + ROPS pin

17A-54-46130 (150000st) Red

17A-54-46120 (100000st) Black

17A-54-46120 (100000st) Black

 New blade linkage (1/3)
• Simple structure with high durability
• Minimum end play with less nodes

New single link

K-type link

(9’8”)
(13’4”)

3955
4060

3955
3055
(10’)

(13’)
D155AX-6 D155AX-5

Komatsu CAT
D155AX-6 D155AX-5 D8T
Link type - New single link K-type link Tag link
Number of link elements Piece 3 6 3
Link greasing points Piece 1 3 0

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New single link (2/3)

New single link

5478 mm

Improved blade arm

Arm size : D275A class

Merits : Blade lift force up

Blade penetrate up
 New single link (3/3)

RH straight frame is wider

than LH straight frame

D155-6 April 2006 New Product Service Training Page 94 / 105

 Improved fuel tank rigidity (1/2)
D155AX-6
• Simple shape with increased plate thickness provides less excessive stress.
• Same tank capacity as current one, but longer hour operation is possible due to fuel efficient
machine design.
D8T
• Complicated shape and mount affect its durability.

Komatsu CAT
D155AX-6 D155AX-5 D8T
ltr (U.S.Gal) 625 (165) 625 (165) 643 (170)
Tank capacity
Ratio 1.0 1.0 1.03
Hourly fuel Ratio 0.9 1.0 1.0
consumption
Tank width mm (ft.in) 2400 (7'10") 1600 (5'3")
Plate thickness of tank mm (in) 6 (0.24) 4.5 (0.18)
D155-6 April 2006 New Product Service Training Page 95 / 105
 Fuel tank

Hole

Strainer guide
Expansion space

Fuel level
Hole

Fuel tank capacity : 625 L

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 Improved engine hood rigidity.
• Improves rigidity for higher durability.
• Prevents dust from getting into engine room.

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 Modular power train design
All major components can be removed from the chassis w/o draining the oil.

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Reduced greasing points for work equipment

D155-6 April 2006 New Product Service Training Page 99 / 105

8. Hydrostatic Driven Engine Cooling Fan
Fan rotation is automatically controlled depending on coolant , hyd
raulic oil temperature and P/L oil temperature, saving fuel consu
mption and providing great productivity with a quiet operating en
vironment.

Fan Control System

R adiat or

E n gine
Mot or

Wa t er Tem p.

Pum p

Con t r oller Oil Tem p.

75

D155-6 April 2006 New Product Service Training Page 100 / 105
 D155AX-6
FAN CONTROL MAP Water temp' : 95 C
rpm P/L Oil temp' : 108 C
Hid Oil temp' : 95 C
1500
Fan Control System 1250 rpm X 1120
95 C
Engine: thermostat. 76-90 C 108 C
1000
70% mode: 875rpm
642 rpm Adjustment ID : 0010
Fan speed

481 rpm Water temp' : < 80 C

500 P/L Oil temp' : < 92 C
Water temp' : < 40 C
P/L Oil temp' : < 52 C

0 50 100 C
Temperature
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User Mode - Fan Reverse Mode

D155-6 April 2006 New Product Service Training Page 102 / 105
Reversible radiator fan

The fan selector switch cannot be

operated when the engine is running
Opening for cleaning up radiator core

Cover

Insert the nozzle from this hole and spray

compressed air to clear radiator core.
Cleaning radiator core by nozzle

Nozzle
9. Gull-wing engine side covers
Gull wing side covers for both left and right side engine access. Open full 140 to give
maximum access to the engine and engine-related components
EXCLUSIVE FEATURE!
All other manufacturers use bolt-on side covers. This is a tremendous advantage in
servicing the machine.
Inspection cover (at opening)
Side cover (STD)

Battery cover

Battery

Washer tank

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Radiator grill
STD
 Engine side cover for EU
Gull-wing engine side covers

Lpa : 78 dB
Lwa : 111 dB

To radiator

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 Radiator grill for EU
EU Lwa : 111 dB

Absorbing noise blade

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 For EU
Assembling the CAB
at the factory

Back-up alarm Tool box

 ＳＴＤ
Assembling the CAB
at the factory
 Remarks on assembling large bulldozers at site
1. Check the packing style beforehand.
1. Check transportation method and regulation.
2. Get the packing list and check the packing style beforehand.
( Contact with sales department at first shipment. )
2. Get the field assembly manual and be prepared beforehand.
1. Prepare assembly place and mechanics
2. Prepare assembling tools, crane, oil, water etc.
3. Have mechanics read the field assembly manual.
For non English speaking countries, translate the important parts
and explain the procedure to the mechanics.
4. Make a copy of the inspection check sheet in the field assembly manual.
5. Teach the method of inspection and Pm-clinic measurement based on
the inspection check sheet.
3. Go back to the basics for mechanics.
1. Assemble the machine based on the field assembly manual.
2. After assembly, inspect the machine based on the inspection check sheet.
3. Keep the record of the inspection check sheet and
Pm-clinic measurement data.
D155-6 April 2006 New Product Service Training Page 112 / 105
 Transportation guide (1/5)
TRACTOR
(Excluding blade and ripper)
For overseas
WEIGHT : 31,950kg

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 Transportation guide (2/5)
For overseas

Assembling the CAB at the factory

D155-6 April 2006 New Product Service Training Page 114 / 105
 Transportation guide (3/5)
TRACTOR
(Excluding blade and ripper)
For Japanese market
WEIGHT : 26,700kg

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 Transportation guide (4/5)

D155-6 April 2006 New Product Service Training Page 116 / 105
 Transportation guide (5/5)

D155-6 April 2006 New Product Service Training Page 117 / 105
Assembly line (Osaka) No 1
Assembly line (Osaka) No 2

Assembling the CAB at the factory

To port
D375A and D475A as it comes off the assembly line,
The tracks are attached at the port.