Home › CDL Practice Tests › Combination Vehicles Questions › Question 249
You find an air line with deep chafing where it rubs the frame, though it is not leaking yet. What is the right action?
- A.Wrap it with tape and check it again next month
- B.It is only a defect once it leaks audibly
- C.Move the line so it rubs a different spot and continue
- D.Treat it as a defect to be repaired before driving; a chafed hose is a failure in progress that can burst under pressure
Correct answer
D. Treat it as a defect to be repaired before driving; a chafed hose is a failure in progress that can burst under pressure
Why
Air lines fail at their worn spots, usually at the worst moment and under braking pressure. Inspection standards treat damaged hoses as defects precisely because 'not leaking yet' is not the same as safe.
Manual topic: Combination Vehicles - Air Lines and Gladhands · From the Combination Vehicles practice bank (CV-249).