24. SERVICE PROCEDURE 24.2.14 CHECK, ADJUST AIR CONDITIONER CHECKING TENSION OF COMPRESSOR BELT If the belt is loose, it will slip and the cooling effect will be reduced. From time to time, press a point midway between the drive pulley and compressor pulley with your finger (approx. 6 kg (13.2 lb)) and check that the tension is 15 – 18 mm (0.6 – 0.7 in). When the belt is new, there will be initial elongation, so always adjust again after 2 or 3 days. CHECK LEVEL OF REFRIGERANT (GAS) WARNING When handling refrigerant gas, always follow local laws and regulations.
The refrigerant used in the cooler is colorless and odorless and does not harm the atmosphere, but if the liquid gets into your eyes or on your hands, it may cause loss of sight or frostbite, so never loosen any part of the refrigerant circuit. If the level of the refrigerant (gas) is low, the cooling effect will be reduced. Run the engine at high idling, and check the flow of the refrigerant in the refrigerant circuit through the sight glass of the receiver when the cooler is running at high speed. No bubbles in refrigerant flow: Correct Bubbles in refrigerant flow (bubbles continuously pass through): Refrigerant level low Colorless, transparent:
No refrigerant Sight glass REMARK When there are bubbles, the refrigerant gas level is low, so contact your refrigerant dealer to have refrigerant added. If the air conditioner is run with the refrigerant gas level low, it will cause damage to the compressor. New Freon R-134a is used as refrigerant. Correct Refrigerant level low No refrigerant (colorless, transparent) Receiver 24.2.15 GREASE DOOR HINGE If the door makes a squeaking noise when it is opened or closed, spray lubricant in through the split in the hinge bushing. If the bushing is worn, replace the hinge. 24.2.16 CHECK DOOR LOCK STRIKER If the wear of the doors lock striker exceeds 0.5 mm (0.02 in), replace the striker.
If it is used at it is, the play will increase and this may result in breakage of the hinge or door lock. 3-38