First check
Direct answer
Check seal condition, clean mating surfaces, proper line connection, audible leaks, and air pressure behavior during the pre-trip. Use the current equipment manual, code book, employer procedure, and qualified supervision before applying this on live work.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Coupling and drill a smaller set before returning to mixed practice.