Practice question

Under PennDOT CDL Manual Section 5, what is the role of the slack adjuster on an S-cam brake?

It cushions the impact of hard braking
It transfers force from the pushrod to the S-cam and can be adjusted to compensate for lining wear
It bleeds water from the system
It limits maximum air pressure

Answer: B — It transfers force from the pushrod to the S-cam and can be adjusted to compensate for lining wear

The correct answer is shown above. Try the full quiz for additional practice.