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MAINTENANCE
SERVICE PROCEDURE
CLEAN AIR CONDITIONER AIR FILTER
If the air filter at the suction port of the air conditioner unit or the air filter at the fresh air intake port become clogged,
the cooling or heating capacity will drop, so clean the filters once a week.
1.
Open cover (1) at the rear of the cab.
2.
Pull out the air filter (FRESH filter) and clean it with
compressed air.
3.
Open cover (2) at the left side at the rear of the operator's seat.
4. Pull out the air filter (recirculated air filter) in the air conditioner
unit suction port at the end of the duct, and blow off the dust
with a weak flow of compressed air or with a soft brush.
CHECK REFRIGERANT (GAS) LEVEL
WARNING
If the refrigerant used in the cooler gets into your eyes or on your hands, it may cause loss of sight or frostbite. Do not touch the
refrigerant. Never loosen any part of the refrigerant circuit.
Do not bring any flame close to any point where the refrigerant gas is leaking.
If the cooling effect is poor, the level of the refrigerant (gas) is
probably low.
Check the sight glass of the receiver dryer on the inside left of the
radiator guard.
REMARK
Run the engine at idling, and if bubbles appear in the sight glass
when the air conditioner is set to cooling, the refrigerant level is low,
so please contact your Komatsu distributor to have it refilled.
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