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MAINTENANCE
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If the coolant level is low, it will cause overheating and will
also cause problems with corrosion from the air in the cool-
ant.
See "Precautions when filling radiator (226)".
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GREASE
Grease is used to prevent corrosion and noise at the joints.
●
The nipples not included in the maintenance section are nip-
●
ples 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.
CARRYING OUT KOWA (Komatsu Oil Wear Analy-
sis)
KOWA is a maintenance service that makes it possible to prevent
machine failures and down-time. With KOWA, the oil is periodi-
cally sampled and analyzed. This enables early detection of wear
of the machine drive parts and other abnormalities.
Periodic use of KOWA makes the following possible:
It enables abnormalities to be detected early, leading to
●
reduction of repair costs and machine downtime.
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It enables repair schedules to be planned, leading to
improved machine availability.
KOWA ANALYSIS ITEMS
Analysis of metal wear particles
●
This uses an ICP (Inductively Coupled Plasma) analyzer to
measure the density of metal wear particles in the oil.
Measurement of particle quantity
●
This uses a PQI (Particle Quantifier Index) metre to measure
the quantity of large iron particles in the oil.
Others
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Measurements are made of items such as the ratio of water
or fuel in the oil, and the dynamic viscosity.
OUTLINE OF SERVICE
229
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