Lesson 3
PRACTICE EXERCISE
1.
Which component of a sixwheel truck airbrake system receives
air pressure from the brake valve and also from the air
reservoir?
a.
Front brake chamber
b.
Governor
c.
Relay valve
2.
What is the purpose of the slack adjuster used in airbrake
systems?
a.
Ensure the trailer brakes are applied first
b.
Compensate for brake lining wear
c.
Ensure a fast release of the trailer brakes
3.
While inspecting a brake system, you find the left front wheel
brake is slow to apply. What is probably at fault?
a.
Quickrelease valve
b.
Application valve
c.
Brake chamber
4.
Most trailer airbrakes are operated through
a.
twoway valves.
b.