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What can happen if water is allowed to collect in the air system in freezing weather?
- A.The water can freeze in lines and valves and block air, so brakes may not apply or may not release properly
- B.Ice in the lines makes the brakes apply faster
- C.Frozen moisture only affects the air horn
- D.Cold water in tanks protects valves from overheating
Correct answer
A. The water can freeze in lines and valves and block air, so brakes may not apply or may not release properly
Why
Ice takes up space in exactly the small passages and valve ports the brake system depends on. A frozen system can lose braking at one or more wheels or hold a brake on, both of which are immediate safety defects.
Manual topic: Air Brakes - Air Tanks and Draining · From the Air Brakes practice bank (AB-218).