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Operator comfort is essential for productive work. The

D275AX-5E0 provides a quiet, comfortable environment

where the operator can concentrate on the work at hand.

Hexagonal pressurized cab (optional)

The cab’s new hexagonal design and large tinted glass

windows provide excellent front, side, and rear visibility.

Air filters and a higher internal air pressure combine 

to prevent dust from entering the cab.

Comfortable ride with new cab damper mounting

and K-Bogie undercarriage

D275AX-5E0’s cab mount uses a new cab damper which

provides excellent shock and vibration absorption capacity

with its long stroke. Cab damper mounts combined with

new K-Bogie undercarriage, softens shocks and vibration

while traveling over adverse conditions, that are impossible

to absorb with conventional cab mounting methods. The

soft spring of cab damper isolates the cab from machine

body, suppressing vibration and providing a quiet,

comfortable operating environment.

New suspension seat

D275AX-5E0 uses a new suspension seat. Fore and aft

sliding rails and suspension spring are reinforced and play

of joints is reduced.

In addition to turning

function for ripper

operation, the seat is also

tiltable to facilitate down

hill dozing. Air suspension

seat is also available.

Operator Comfort 

Photo may include optional equipment.

9

Centralized service station

To assure convenient maintenance, the transmission and

HSS oil filters, power train oil level gauges and hydraulic tank

are arranged in the right side of the machine.

Monitor with self-diagnostic function

With the starting switch turned ON, the monitor displays P

on the display, check-before-starting and caution items

appear on the lower right part of the panel. If the monitor

finds abnormalities, corresponding warning lamp blinks and

warning buzzer sounds. The monitor displays engine rpm

and forward/reverse gear speed on the upper part of the

monitor during operation. When abnormalities occur during

operation, action code and service meter are displayed

alternately. When a critical action code is displayed, the

caution lamp blinks and a warning buzzer sounds to

prevent the development of serious problems.

Enclosed hydraulic piping

Hydraulic piping for the blade tilt cylinder is completely

housed in the push arm, ensuring damage protection from

materials.

Modular power train design

Power train components are sealed in a modular design that

allows the components to be dismounted and mounted

without oil spillage.

Oil pressure checking

ports

Pressure checking ports for

power train components are

centralized to promote quick

and simple diagnosis.

Maintenance free disc brakes

Wet disc brakes require less maintenance.

Enlarged engine room

Engine room space is enlarged by increasing engine hood

height, facilitating maintenance of the engine and related

equipment. Perforated holes on the engine hood are

discontinued, preventing dust and rain entering and to keep

engine area clean.

Gull-wing engine side covers 

The opening area is further enlarged when gull-wing engine

side covers are opened, facilitating engine maintenance and

filter replacement. Side covers have been changed to a thick

one-piece structure with a bolt-on catch to improve durability.

Preventative Maintenance

Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the

D275AX-5E0 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

Low Maintenance Costs

Track link with wedge ring

New D275AX-5E0 track links feature reduced press-fit force and a wedge

ring. Conventional track pins are retained only with a large press-fit force.

The new track link divides pin forces between the wedge ring and press-fit

force. This results in easier service with reduced pin damage when turning

pins and bushings. The result is improved undercarriage life and reduced

maintenance cost through reduced wear, greater pin reusability, and reduced

maintenance man-hours.

Wedge ring

Pin press-fit 
force +
wedge ring 
holding force

Track 
guiding 
guard

All warning and monitor lamps are lit for photo shooting.

Spring

Silicon oil

Rubber

Boot

Cab damper mounting

W

ORKING 

E

NVIRONMENT

D275AX

-5E0

CRAWLER DOZER

D275AX

-5E0

C

R A W L E R

D

O Z E R

E

ASY

M

AINTENANCE

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