3)
Lower the cover (3) gradually, and remove it.
(A) Front of the machine
METHOD FOR CHECKING ELECTRICAL INT
AKE AIR HEATER
Check before starting in the cold weather (once a year).
Ask your Komatsu distributor for check of the electrical intake air heater.
METHOD FOR CHECKING AND REPLACING RADIATOR CAP AND PRESSURE
CAP
WARNING
Immediately after the engine is stopped, the coolant is still hot and the pressure is accumulated in the
radiator
. You may get burn injury if you remove the cap in this state. Always wait for the temperature to
go down, turn the cap slowly to release the pressure, then remove the cap with care.
NOTICE
If
the seal portion of radiator cap and pressure cap is dirty or deteriorated or damaged, the coolant may
not return from the reservoir tank to the radiator, and may cause the machine failure.
1.
Check that the seal (a) of the radiator cap (1) is not de-
formed
nor cracked, and the foreign material such as the
sand is not stuck.
If there is an abnormality, clean or replace the seal.
MAINTENANCE MAINTENANCE PROCEDURE
4-45
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