7
I
NCREASED
R
ELIABILITY
WHEEL LOADER
WA900
-3E0
W
H E E L
L
O A D E R
E
ASY
M
AINTENANCE
6
Komatsu Components
Komatsu manufactures the engine, torque converter,
transmission, hydraulic units, electric parts, on this wheel
loader. Komatsu loaders are manufactured
with an integrated production system under a strict quality
control system.
Engine pre-lube System (optional)
Durability of the engine is achieved by raising the engine oil
pressure before starting the engine. When the operator turns
the key, the pre-lubrication pump sends oil from the engine
oil pan to the engine oil filter and raises the pressure of that
oil to the set pressure. Then, the starting motor rotates to
start the engine.
Maintenance-Free Braking System
Service brakes employ two hydraulically-actuated
independent circuits which are adjustment-free, fully-sealed,
wet disc units, preventing intrusion of dirt and dust. Since the
brake system does not use air, it provides many features
such as absence of condensation, dependable braking even
in cold conditions, no need for
drainage, and rust free piping.
What's more, charging time after
engine starting is drastically
shortened and pedal depressing
effort is reduced.
High-rigidity Frames and Loader Linkage
The front and rear frames and the loader linkage have more
torsional rigidity to secure resistance against increased
stress. Frame and loader linkage are designed to
accommodate actual working
loads, and simulated
computer testing proves
its strength.
Flat Face-to-Face O-Ring Seals
Flat face-to-face O-ring seals
are used to securely seal
hydraulic hose connections
and to prevent oil leakage.
In addition, buffer rings are
installed to the head side of
the all-hydraulic cylinders to
lower the load on the rod
seals and maximize
reliability.
Cathion Electrodeposition Primer Paint/
Powder Coating Final Paint
Cathion electrodeposition paint is applied as a primer
paint and powder coating is applied as topcoat to the
exterior sheet metal parts. This process results in a
durable paint finish, even in the most severe environments.
Some external parts are made of plastic providing long life
and high impact resistance.
Sealed DT Connectors
Main harnesses and controller connectors are equipped
with sealed DT connectors
providing high reliability, water
resistance and dust resistance.
buffer rings
dust seal
rod packing
nipple
hose
O-ring
Simple Checks, Easy Maintenance
The main monitor and the maintenance monitor (EDIMOS II)
are neatly arranged on the instrument panel for a quick, clear
reading of machine functions at all times. The main monitor
also has a diagnostic function.
Main monitor
Maintenance monitor
Large Side Door
Right side door is easy to open
and provides accessibility for
maintenance.
Fuel Tank Cap
with Mud Cover
and Large Tool
Box
Rear Access Stairs
For the purpose of boarding and exiting machine, rear
access stairs with handrail is provided. The step width,
clearance, and the step angle have been designed for
climbing both up and down. A step light provides light for
night boarding.
Auto-Greasing System (optional)
The periodic lubrication points, except for drive shaft, are
greased automatically according to a preset amount and
interval. Quick-change grease canisters make replacement
easy and clean.
VHMS (Vehicle Health Monitoring System) (optional)
VHMS is a management system for large equipment for
use in mining, which enables detailed monitoring of fleet
via satellite communications. Komatsu and distributors can
analyze “vehicle health” and other operating conditions and
provide the information to job site using the internet from a
remote location on a near-real time basis.
Satellite
communication(option)
Personal Computer
terminal
(for downloading data)
WebCARE Server
Komatsu
distributors
KOMATSU
Customer
job site
Photo may include optional equipment.
WA900
-3E0
Rear axle
Engine
Torque converter
Damper
Transmission
Front axle
Tool box
Fuel tank cap
