Preventative Maintenance
Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the
D475A-5E0 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.
Centralized service station
To ensure convenient maintenance, the transmission
and torque converter oil filters are both arranged next to
the power train oil level gauge.
Monitor with self-diagnostic function
If the monitor finds abnormalities, corresponding warning
lamp blinks and warning buzzer sounds. When
abnormalities occur during operation, user code and service
meter are displayed alternately. When a high importance user
code is displayed, a caution lamp
blinks and warning buzzer sounds to
prevent the development of serious
problems.
Oil pressure checking ports
Pressure checking ports for power train components are
centralized to promote quick and simple diagnosis.
Gull-wing engine side covers
Gull-wing engine side covers facilitate engine maintenance
and filter replacement. Side covers are a thick
one-piece structure with bolt-on latch to improve durability
and repairability.
VHMS (Vehicle Health Monitoring System)
VHMS controller monitors the health conditions of major
components and enables remote analysis of the machine
and its operation. This process is supported by the Komatsu
distributors, factory and design team. This contributes to
reduced repair costs and to maintaining maximum availability.
9
Low Maintenance Costs
Track link with wedge ring
New D475A-5E0 track links
feature reduced press-fit force
and a wedge ring. Conventional
track pins are retained only with
a large 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.
Highly reliable electric circuit
The electrical circuit reliability is increased by utilizing dust,
vibration and corrosion resistant "DT connectors". The
reinforced electrical wiring harnesses include a circuit
breaker and are covered with a heat-resistant material to
increase mechanical strength, provide longer life, and
protect the system from damage.
8
Rubber
Silicon Oil
Spring
Rubber Boot
Operator Comfort
Operator comfort is essential for safe and productive work. The D475A-5E0
provides the operator with a quiet, comfortable environment where the operator
can concentrate on the work at hand.
Hexagonal pressurized cab
●
The cab’s new hexagonal design and large tinted glass windows provide
excellent front, side, and rear visibility.
●
Improved cab sealing, air filters and increased internal air pressure combine to
prevent dust from entering the cab.
●
The floor mat and door sill are the same height to facilitate easy cleaning.
●
The high quality cab interior is fully lined with sound absorbing material.
Comfortable ride with new cab damper mounting
and K-Bogie undercarriage
D475A-5E0’s cab mount uses a new cab damper
mounting which further improves viscous damper and
provides excellent shock and vibration absorption capacity
with its long stroke. The cab damper mounting, combined
with new K-bogie undercarriage, softens shocks and
vibrations while traveling over adverse condition 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.
·Operator noise: 70dB(A)
(Engine at high idle, fan speed at 70%, and air conditioner OFF)
·Dynamic noise (outside): 110dB(A)
(As per ISO 6395)
Improvement of visibility in rear of blade
The shape of the blade heel and the position of the operator's
seat are changed so that the operator can check the ground in the rear of the
blade during dozing. Accordingly, the operator can work more accurately. In
addition, the position of the exhaust pipe is changed for better front visibility.
New suspension seat
D475A-5E0 uses a new air suspension seat. Fore and aft sliding rails and
suspension spring increasing strength and rigidity and reducing play of joints.
In addition to turning function for ripper operation, the seat is also tiltable to
facilitate down hill dozing.
Relocated air intake ports of air conditioner
The air conditioner fresh air inlet is located above the fender to prevent dust
from the undercarriage from entering the cab. The inside air recirculation inlet is
located behind the operator's seat, away from the dirt and dust of the floor mat,
to provide an increased cleaning/replacement interval.
Cab damper mounting
Wedge ring
Pin press fitting
force +
wedge ring
holding force
Track
guiding
guard
KOMATSU
WebCARE server
Personal
computer
terminal
(for downloading
data)
Internet
Komatsu
distributors
Customer
job site
Satellite
communication (option)
Flat face O-Ring seals
Flat face O-ring seals are used to securely seal all
hydraulic hose connections and to prevent oil leakage.
Enclosed hydraulic piping
Hydraulic piping for the blade tilt cylinder is completely
housed in the push arm protecting it from damage.
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, making servicing work clean, smooth,
and easy.
Maintenance-free disc brakes
Wet disc brakes require less maintenance.
W
ORKING
E
NVIRONMENT
D475A
-5E0
CRAWLER DOZER
D475A
-5E0
C
R A W L E R
D
O Z E R
E
ASY
M
AINTENANCE
