Air Brake Manual

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Section summary

  1. What is the purpose of a two-way check valve?
  2. Why should the glad hands be protected when not in use?
  3. How do you control the trailer brakes independently?
  4. What are two ways of testing the emergency application of the trailer brakes?
  5. Should the hand valve of a tractor trailer unit be used for parking? Why?
  6. What is the main purpose of the tractor protection valve?
  7. What is the main purpose of the trailer supply valve?
  8. Name three functions of the relay emergency valve.
  9. Describe the function of the supply line.
  10. Describe the function of the service line.
  11. What will occur if the supply line ruptures?
  12. What will occur if the service line ruptures?
  13. What will occur if a brake application is made with a ruptured service line?
  14. If the foot valve and the hand valve are operated at the same time, can the application pressure be greater to the trailer brakes than the truck brakes?


Rev: 2018