Komatsu WA380-8, Operation & Maintenance Manual

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RECOMMENDED FUEL, COOLANT, AND LUBRICANT
NOTICE
• Komatsu genuine oils are conditioned to maintain the reliability and durability of Komatsu construc-
tion equipment and components.
In order to keep your machine in the best condition for long period of time, it is essential to follow
the instructions in this Operation and Maintenance Manual.
• Failure to follow these recommendations may result in shortened life or excessive wear of the en-
gine, power train, cooling system, and/or other components.
• Commercially available lubricant additives may be good or bad for the machine. Komatsu does not
recommend any commercially available lubricant additive.
• Komatsu recommends using Komatsu genuine engine oil for KDPF. If engine oil other than Komat-
su genuine oil for KDPF is used, it may shorten cleaning interval of KDPF filters, adversely affect
the engine such as deteriorated oil may reduce lubricating function, and it may cause failure, short-
ening of the machine life, lowering of performance and increase of fuel consumption.
• Use the fuel, the oil and the lubricant according to the ambient temperature as recommended.
• If the machine is operated at a temperature of -20 °C and below, separate devices are needed, so
consult your Komatsu distributor.
NOTICE
The fuel used must be ultra low-sulfur diesel fuel.
(≤10 ppm)
To ensure good fuel consumption characteristics and ex-
haust gas characteristics, the engine mounted on this ma-
chine uses an electronically controlled high-pressure fuel
injection device and emission gas control system (KDPF).
Since the high-pressure fuel injection device requires high
precision parts and lubrication, if low viscosity fuel with
low lubricating ability is used, its durability may drop con-
siderably. And using fuel with high sulfur content can dete-
riorate the engine parts and KDPF catalyzer, inducing fail-
ures, decrease of the life and degradation in performance.
NOTICE
Use DEF as the aqueous urea solution for SCR system.
DEF is a colorless transparent 32.5 % aqueous urea solu-
tion.
The quality of DEF is prescribed in ISO22241-1. Always use
DEF that conforms to this quality standard.
LUBRICATION CHART
• The lubrication chart uses symbols to show the lubrication points and types of lubricant by each lubrication
interval.
• Even if the same symbol is used in the lubrication chart, the recommended genuine oil may differ according
to the lubrication points and the ambient temperature. For details, see “METHOD FOR USING FUEL,
COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE (7-6)”.
• For details of lubrication, see “MAINTENANCE SCHEDULE (4-12)”.
RECOMMENDED FUEL, COOLANT, AND LUBRICANT REPLACEMENT PARTS
7-4