Komatsu HB215LC-3, Operation & Maintenance Manual, Page: 350 / 492

• Never use an iron or aluminum container when disposing DEF, because toxic gas may develop and a
chemical reaction may corrode the container. Use a container made of resin (PP, PE) or stainless steel
when handling the fluid waste of DEF.
NOTICE
If you add any additional additive agents or water to DEF, the devices in the Urea SCR system may be
defective, and conformance to the exhaust gas regulations will be lost.
GREASE
• Grease is used to prevent seizure and noises at the joints.
• This construction equipment is used under heavy-duty conditions. Komatsu recommends using the recom-
mended grease and follow the replacement intervals and recommended ambient temperatures given in this
Operation and Maintenance Manual.
• Grease fittings not included in the periodic maintenance section are the 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.
PERFORM KOWA (Komatsu Oil Wear Analysis)
KOWA is a maintenance service that makes it possible to prevent machine failures and downtime. With KOWA,
the oil is periodically sampled and analyzed. This enables early detection of wear of the machine drive parts and
other problems.
Thanks to long term experience and ample data accumulated, we can grasp condition of your machine accu-
rately and provide proper recommendation.
We strongly recommend you to use this service. The oil analysis is performed at actual cost, so the cost is low,
and results of the analysis and recommendations are reported promptly.
KOWA analysis items
Measurement of metallic powder concentration
An ICP (Inductively Coupled Plasma) analyzer is used for
measuring the concentration of iron, copper, and other metal
powder in the oil.
Measurement of quantity of iron particles
A PQI (Particle Quantifier Index) measuring instrument is used
for measuring the quantity of iron particles of 5 μm or more, en-
abling 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.
OUTLINE OF MAINTENANCE MAINTENANCE
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