64 50... Leak-testing with leak tester device

WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, and 2008 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Avoid contact with refrigerant.
Follow Safety Precautions When Handling Refrigerant .

Carry out leak-testing with a leak tester device from the workshop equipment catalog following the device manufacturer's operating instructions.

If leaks not to be localized are already identified during evacuation, the A/C system must nevertheless be filled. Then test for leaks with leak tester device.

NOTE: Refrigerant is heavier than air.
Therefore always conduct the leak test below the lines and components to be tested.
Shield lines and components against strong blasts of air (wind, drawing off).

Tighten down loose lines, mark leaks.

Then draw off draw off A/C system and seal off or repair leakage points.

Then refill A/C system and test for leaks.