Komatsu D375A-8, Operation & Maintenance Manual

Page: 330 / 466

8.
Install cover (3) according to the following procedure.
1) Align cover (3) with the element.
2) Lock the tip of hook (2) on the protrusion of the air
cleaner body.
3) Lock hooks (2) diagonally, (top and bottom, right and
left) in the same way as when tightening bolts.
4) When cover (3) is installed, check that the clearance
between the air cleaner body and cover (3) is not too
large.
If it is too large, install again correctly.
METHOD FOR CLEANING INSIDE OF COOLING SYSTEM
k k
WARNING
• Immediately after the engine is stopped, the coolant is still hot and the pressure is accumulated in
the radiator. If the cap is removed under this condition and the coolant is drained, it may cause
burn. Always wait for the temperature to go down, and turn the cap slowly to release the pressure.
• Start the engine and clean the inside of the cooling system. When standing up or leaving the opera-
tor's seat, lock the parking brake lever and work equipment lock lever.
• Never approach the fan at the front of the machine while the engine is running. There is a danger of
touching the fan.
• It is very dangerous to go under the machine for cleaning while the engine is running, since the ma-
chine may move unexpectedly. While the engine is running, never go under the machine.
Place the machine on a level ground when cleaning or changing the coolant.
Ask your Komatsu distributor for cleaning.
Clean the inside of the cooling system, change the coolant according to the table.
Coolant
Cleaning of inside of cooling system and re-
placement of coolant
Non-Amine Engine Coolant
(AF-NAC)
Every 2 years or
4000 hours, whichever comes sooner
The coolant has the important function of preventing corrosion as well as preventing freezing.
Even in the areas where freezing is not an issue, the use of coolant is essential.
Komatsu machines are supplied with Non-Amine Engine Coolant (AF-NAC). Non-Amine Engine Coolant (AF-
NAC) has excellent anti-corrosion, antifreeze and cooling properties and can be used continuously for 2 years
or 4000 hours.
Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use another coolant, it may
cause serious problems, such as corrosion of the engine and aluminum parts of the cooling system.
To maintain the anti-corrosion properties of Non-Amine Engine Coolant (AF-NAC), always keep the density of
Non-Amine Engine Coolant between 30 % and 64 %.
MAINTENANCE PROCEDURE MAINTENANCE
4-20