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Preventative maintenance
Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the
D375A-5R with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.
Low maintenance costs
Rubber
Silicon Oil
Spring
Rubber Boot
Operator comfort
Operator comfort is essential for productive work. The D375A-5R
provides the operator with a quiet, comfortable environment where the operator
can concentrate on the work at hand.
Hexagonal pressurized cab
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The cab’s new hexagonal design and large tinted glass windows provide
excellent front, side and rear visibility.
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Air filters and a higher internal air pressure combine to help prevent dust from
entering the cab.
Comfortable ride with new cab damper mounting
and K-Bogie undercarriage
D375A-5R’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.
New suspension seat
D375A-5R uses a new suspension seat. Fore and aft sliding
rails and suspension spring increases strength and rigidity.
New seat provides excellent support and riding comfort. Fore and
aft sliding amount is designed to fit all operators.
Fresh air intake from rear of engine hood
The air conditioner air intake port is now located at the rear of the engine hood where
there is minimal dust. As a result, the air inside the cab is cleaner. Cleaning interval
of the filter is greatly extended, and use of a new structure filter element facilitates
cleaning and replacement.
Cab damper mounting
Photo may include optional equipment.
Track link with wedge ring
New D375A-5R 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.
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.
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.
Adjustment-free disc brakes
Wet disc brakes require less maintenance.
Wedge ring
Pin press fitting
force +
wedge ring
holding force
Track
guiding
guard
W
ORKING
E
NVIRONMENT
D375A
-5R
CRAWLER DOZER
D375A
-5R
C
R A W L E R
D
O Z E R
M
AINTENANCE
Photo may include optional equipment.
Monitor with self-diagnostic function
When the starting switch turned ON, the monitor displays P
on the upper part of the display, service meter on the lower
part of the display and Check-before-starting and caution
items appear on the right part of the liquid crystal 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 display during operation. If an error
occurs during operation, and a high importance user code is
displayed, a caution lamp blinks and warning buzzer
sounds to prevent the development of serious problems.
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.
Oil pressure checking ports
Pressure checking ports for power train components are
centralized to promote quick and simple diagnosis.
Enlarged engine room
Engine room space is enlarged by increasing engine
hood height, facilitating maintenance of the engine and
related equipment. Solid engine hood prevents dust
and rain from entering and keeps the engine clean.
Gull-wing engine side covers
Gull-wing engine side covers facilitate engine maintenance
and filter replacement. Side covers are a thick two-piece
structure with bolt-on latch to improve durability and
repairability.
