551、温度调节是自动的。

723、 Rectify the defect before you stop the pump momentarily. 在暂时停止泵前先纠正缺陷。

722、 Perform preliminary inspection of all articles that are maintained

721、Make sure that you turn the control knob counterclockwise

720、 Make sure that you remove all tools and equipment.

719、Make sure that the indication on the gauge agrees with the quantity that is in the tank.

718、 Make sure that the cabin pressure stays constant.

717、lf test result fail, the repair extent should be depended on the troubles

716、 Keep tools away and pick up debris near the engine

715、Keep all the' parts that are serviceable and discard those that are broken.

714、Increase the pressure slowly ( )