24. SERVICE PROCEDURE 24.2.3 CHECK LEVEL OF WINDOW WASHER FLUID, ADD FLUID Carry out this check if there is air in the window washer fluid. Check the level of the fluid in window washer tank 1 , and if it is low, fill with automobile window washer fluid. Be careful not to let dirt or dust get in when adding fluid. When operating at below freezing point, use fluid with anti- freeze. AE133970 24.2.4 CLEAN AIR CONDITIONER AIR FILTER If the air filter at the suction port of the air conditioner unit and the air filter for both the fresh air and recirculated air at the FRESH/ RECIRC suction port are clogged, the cooling or heating capacity will drop, so clean the filters once a week. 1.
Remove cover 1 at the front of the cab. AE133980 2. Pull out the air filter and clean it with compressed air. 3. Release the catch of cover 2 on the right side of the accelerator pedal to open it. 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. 24.2.5 CHECK REFRIGERANT (GAS) LEVEL WARNING Colorless, transparent If the cooler refrigerant liquid gets into eyes or on your hands it may cause loss if sight or frost bite, so never loosen any part of the refrigerant circuit.
Sight glass No refrigerant Correct amount of refrigerant Bubbles Lack of refrigerant 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. AE133990 REMARK Run the engine at idling and set the air conditioner to cooling. If bubbles can be seen in the sight glass, the refrigerant level is low, so contact your Komatsu distributor to have the system re filled. 3-30