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- What is the purpose of a two-way check valve?
- Why should the glad hands be protected when not in use?
- How can a driver control the trailer brakes independently?
- What are three ways of testing the emergency application of the trailer brakes?
- Should the hand valve of a tractor trailer unit be used for parking?
- What is the main purpose of the tractor protection valve?
- What is the main purpose of the trailer supply valve?
- Name three functions of the relay emergency valve.
- Describe the function of the supply line.
- Describe the function of the service line.
- What will occur if the supply line ruptures?
- What will occur if the service line ruptures?
- What will occur if a brake application is made with a ruptured service line?
- If the foot valve and the hand valve are operated at the same time, can the application pressure be greater than the reservoir pressure?
