Komatsu D475A-5E0 Operation & Maintenance Manual page 250

MAINTENANCE
GREASE
Grease is used to prevent seizure and noises at the joints.
This construction equipment is used under heavy-duty conditions. Always use the recommended grease and
follow the change intervals and recommended ambient temperatures given in this Operation and Maintenance
Manual.
Grease fittings not included in the maintenance section are grease fittings for overhaul, so they do not need
grease.
If any part becomes stiff after being used for long time, add grease.
Always wipe off all of the old grease that is pushed out when greasing.
Be particularly careful to wipe off the old grease in places where sand or dirt sticking in the grease would cause
wear of the rotating parts.
PERFORMING KOWA (Komatsu Oil Wear Analysis)
The oil clinic samples the oil periodically and analyzes it. This is a preventive maintenance service, which provides
early discovery of abnormal parts and wear of the drive parts of the machine. This then makes it possible to ensure
prevention of failures and reduction in downtime.
Komatsu's long years of experience and rich supply of accumulated data make it possible to accurately determine
the condition of your machine. This enables us to locate the problems and to recommend suitable and timely repair
methods.
The oil clinic charges the customer only the actual costs, and provides an immediate report of the results of the
analysis and recommendations for action to take. This low-cost service can save you high costs and inconvenience
in the future, so we strongly recommend you to avail yourself of this service.
KOWA ANALYSIS ITEMS
Measurement of density of metal wear particles
This uses an ICP (Inductively Coupled Plasma) analyzer to
measure the density of iron, copper, and other metal wear
particles in the oil.
Measurement of quantity of particles
This uses a PQI (Particle Quantifier Index) measurer to
measure the quantity of iron particles of 5 μm or more, enabling
early detection of failures.
Others
Measurements are made of items such as the ratio of water, coolant, and fuel in the oil, and dynamic viscosity,
if necessary, to enable a highly precise diagnosis of the machine and the components' condition.
OUTLINES OF SERVICE
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