2004 Hyundai Sonata Owner's Manual - Page 174

6- 16 DO-IT-YOURSELF MAINTENANCE G140B01A-AAT G140D01A-AAT G150A01A-AAT Checking the Air Conditioning Operation 1. Start the engine and let it run at a fast idle for several minutes with the air conditioning set at the maximum cold setting. 2. If the air coming out of the in-dash vents is not cold, have the air conditioning system inspected by your Hyundai dealer. Checking the Compressor Drive Belt DOHC Auto tensioner V6 CHECKING STEERING WHEEL FREE-PLAY ! CAUTION: Running the air conditioning system for extended periods of time with a low refrigerant level may damage the compressor. COMP Eng.pulley 0.315 in. COMP Eng.pulley HSM396 Maximum 1.18 in. (30 mm) G150A01Y G140C01A-AAT Lubrication To lubricate the compressor and the seals in the system, the air conditioning should be run for at least 10 minutes each week. This is particularly important during cool weather when the air conditioning system is not otherwise in use. When the air conditioning is being used regularly, the compressor drive belt tension should be checked at least once a month with the engine turned off. To check the drive belt tension, press down on the belt halfway between the engine crankshaft and compressor pulleys. Pressing with your finger, you should not be able to deflect this belt anymore than 1/3 of an inch. If you have the instruments to check it, with a force of 22 lb. (98N), the deflection should be 0.315 inches (approx 8.0 mm). If the belt is too loose, have it adjusted by your Hyundai dealer. To check the steering wheel free-play, stop the car with the wheels pointed straight ahead and gently move the steering wheel back and forth. Use very light finger pressure and be sensitive to changes in resistance that mark the limits of the free-play. If the free-play is greater than specified, have it inspected by your Hyundai dealer and adjusted or repaired if necessary.