Asked by
Rahul Sengupta
on Oct 13, 2024
Verified
A system air pressure loss occurs on a trailer resulting in a gradual pressure bleed down.Which of the following will occur FIRST?
A) service brakes on trailer apply
B) tractor-protection valve cuts service signal to the trailer
C) tractor-protection valve cuts the trailer supply
D) spring brakes on trailer begin to apply when pressure drops to 60 psi
System Air Pressure Loss
The decrease in air pressure within a system, often due to leaks or inefficiencies, which can affect system performance.
Tractor-Protection Valve
A safety device in trucks that prevents air loss in the tractor if there's a leak in the trailer, ensuring the tractor's braking system remains functional.
Pressure Bleed Down
The process of gradually reducing the pressure in a system, often as a safety or preparatory step before maintenance or inspection.
- Understand emergency protocols and how safety devices function within air brake systems.
- Learn how to appropriately respond to air pressure loss or system failures to ensure safety.
Verified Answer
SP
Learning Objectives
- Understand emergency protocols and how safety devices function within air brake systems.
- Learn how to appropriately respond to air pressure loss or system failures to ensure safety.