Komatsu WA70-7, Руководство по эксплуатации и обслуживанию

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5.8 Maintenance procedure
Maintenance Maintenance every 2000 service hours
WA70-7 – VENAM02003
5-67
5.8.12 Maintenance every 2000 service hours
Also perform all maintenance tasks scheduled to be carried out
every 10, 50, 100, 250, 500, and 1000 service hours.
Cooling system – change coolant and clean cooling system
WARNING

Danger of scalding! The coolant is pressurised while the
engine is hot. Hot coolant may spurt out when the cooling
system is opened.

Wait until the engine has cooled down before checking the
coolant level. Slowly unscrew the cap (arrow) to let the pres-
sure escape.
DANGER
Danger of fire! Antifreeze may ignite when making contact with
the hot engine. Wait until the engine has cooled down before
adding antifreeze.
Park the machine on solid, level ground before cleaning the
cooling system or changing the coolant.
Clean the inside of the cooling system, change the coolant and
the anti-corrosive according to the table below.
Operating precautions
When using Komatsu Supercoolant (AF-NAC) there is no need
to use anti-corrosive.
If using anti-corrosive, use Komatsu anti-corrosive exclusively.
Using any other anti-corrosive may cause serious damage, such
as corrosion of the engine or of cooling system components that
use light metals like aluminium.
The coolant has the important function of preventing corrosion
and freezing.
Even in the areas where freezing is not an issue, the use of anti-
freeze coolant is essential.
Coolant/antifreeze
Interval for cleaning the inside of the cooling system
and changing the coolant
Komatsu Supercoolant
(AF-NAC)
Every two years or every 4000 service hours,
whichever is earlier.