Audi Q7: Passenger Protection, Airbags, Seat Belts

 Refrigerant line, Disconnecting and Connecting

Information on the Refrigerant Lines and A/C Compressor   Caution Danger due to refrigerant coming out under pressure. Danger of frost bite to skin and other parts of the body. Only loosen the connection point bolts when the refrigerant circuit is empty.   Note On most vehicles the

 Valvetrain

Overview - Valvetrain   Note Cylinder heads with cracks between the valve seats or between valve seat ring and spark plug thread can still be used without loss of service life if the cracks are minute (max. 0.3 mm width) or only the first four threads of a spark plug thread are cracked.