Home › CDL Practice Tests › Air Brakes Questions › Question 225

Air Tank Draining, Alcohol Evaporators & Dryers

What safety points apply when you drain air tanks?

  • A.Park on level ground with the parking brakes set and stay clear of the discharge, which can carry water, oil, and debris at pressure
  • B.Stand directly in front of the drain to watch for color
  • C.Drain the tanks while a helper holds the vehicle on a slope without brakes
  • D.Leave the engine in gear and the parking brake off
Correct answer

A. Park on level ground with the parking brakes set and stay clear of the discharge, which can carry water, oil, and debris at pressure

Why

Tanks hold air at full system pressure, and the first blast out of a drain can spray gritty liquid with force. A parked, secured vehicle and a position out of the discharge path make a routine job safe.

Manual topic: Air Brakes - Air Tanks and Draining · From the Air Brakes practice bank (AB-225).

Practice this subject as a full test

More Air Tank Draining, Alcohol Evaporators & Dryers questions