OUTLINE OF MAINTENANCE
• Komatsu recommends using Komatsu genuine parts for replacement parts, grease or oil.
• When changing the oil or adding oil, do not mix different types of oil. When changing the type of oil, drain all
the old oil and fill completely with the new oil. Always replace the filter at the same time. (There is no prob-
lem if the small amount of oil remaining in the piping mixes with the new oil.)
• Unless otherwise specified, when the machine is shipped from the plant, it is filled with the oil and coolant
listed in the table below.
Item
Type
Engine oil pan Engine oil EO15W40–LA (Komatsu genuine)
Power train case
Final drive case
Damper case
Idler
Power train oil TO30 (Komatsu genuine)
Hydraulic tank Power train oil TO10 (Komatsu genuine)
Radiator
Non-Amine Engine Coolant (AF-NAC) (Komatsu genuine) (density: 30% or
above)
HANDLE OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
OIL
• Oil is used in the engine and hydraulic equipment under extremely severe conditions (high temperature,
high pressure), and deteriorates with use.
Always use oil that matches the grade and maximum and minimum ambient temperatures recommended in
Operation and Maintenance Manual.
Even if the oil is not dirty, always change the oil at the specified interval.
• Oil corresponds to blood in the human body, always be careful when handling it to prevent any impurities
(water, metal particles, dirt, etc.) from getting in.
The majority of failures with the machine are caused by the entry of such impurities.
Take particular care not to let any impurities get in when storing or adding oil.
• Never mix oils of different grades or brands.
• Always add the specified amount of oil.
Having too much oil or too little oil are both causes of failures.
• If the oil in the work equipment is not clear, there is probably water or air getting into the circuit. In such
cases, consult your Komatsu distributor.
• When changing the oil, always replace the related filters at the same time.
• We recommend that you have an oil analysis periodically to check the condition of the machine. For those
who wish to use this service, consult your Komatsu distributor.
• When shipped from the plant, power train oil TO10 is used.
When using HO46-HM hydraulic oil, replace the specified amount (all capacity).
Use of hydraulic oil out of our recommendation can cause clogging of the filter. Accordingly, do not use it.
Oil remaining in the piping and cylinders may be mixed in.
NOTICE
Komatsu recommends using Komatsu genuine engine oil for KDPF. If engine oil other than Komatsu
genuine oil for KDPF is used, it may shorten cleaning interval of KDPF filters, adversely affect the en-
gine such as deteriorated oil may reduce lubricating function, and it may cause failure, shortening of
the machine life, lowering of performance and increase of fuel consumption.
MAINTENANCE OUTLINE OF MAINTENANCE
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