After releasing pressure, what is the second step in uncoupling ground air lines from equipment?

After releasing pressure, what is the second step in uncoupling ground air lines from equipment?

• A. Close the angle cock on the equipment that the ground air is connected to
• B. Remove the ground air hose
• C. Turn off the main power switch
• D. Check the tire pressure

Answer: (A)

Isolating the air line is the key step after releasing pressure. Close the angle cock on the equipment that the ground air is connected to. This valve shuts off air to the line, so when you disconnect the hose there’s no residual pressure driving air out. After that, you can safely remove the ground air hose. The other options aren’t part of this uncoupling sequence: turning off a main power switch isn’t relevant to ground air lines, and checking tire pressure isn’t part of uncoupling ground air lines.

Isolating the air line is the key step after releasing pressure. Close the angle cock on the equipment that the ground air is connected to. This valve shuts off air to the line, so when you disconnect the hose there’s no residual pressure driving air out. After that, you can safely remove the ground air hose. The other options aren’t part of this uncoupling sequence: turning off a main power switch isn’t relevant to ground air lines, and checking tire pressure isn’t part of uncoupling ground air lines.