What should you check about the trailer brakes and slack adjusters?

What should you check about the trailer brakes and slack adjusters?

• A. Slack adjusters are irrelevant to braking
• B. Brakes should respond when applied; slack adjusters should not be seized or damaged.
• C. Slack adjusters should be removed before travel
• D. Brakes should be used only on downhill

Answer: (B)

This checks that the trailer braking system works as it should and that the components that keep the brakes correctly adjusted are in good condition. When you apply the brakes, the trailer brakes should respond, meaning the brakes engage and slow or stop the trailer. At the same time, the slack adjusters must be able to move freely and should not be seized or damaged. If a slack adjuster is stuck or damaged, it can’t transfer the push from the brake chamber to the brake shoes properly, so the brakes may be slow to apply, apply unevenly, or not engage at all. That combination—brakes that respond to pedal input and slack adjusters that are free to move and intact—ensures reliable braking and proper maintenance of brake shoe clearance. In practice, you’d observe the trailer brakes engaging when you apply the pedal, and you’d inspect the slack adjusters for any signs of seizure, binding, bending, or damage so they can continue to function correctly.

This checks that the trailer braking system works as it should and that the components that keep the brakes correctly adjusted are in good condition. When you apply the brakes, the trailer brakes should respond, meaning the brakes engage and slow or stop the trailer. At the same time, the slack adjusters must be able to move freely and should not be seized or damaged. If a slack adjuster is stuck or damaged, it can’t transfer the push from the brake chamber to the brake shoes properly, so the brakes may be slow to apply, apply unevenly, or not engage at all. That combination—brakes that respond to pedal input and slack adjusters that are free to move and intact—ensures reliable braking and proper maintenance of brake shoe clearance. In practice, you’d observe the trailer brakes engaging when you apply the pedal, and you’d inspect the slack adjusters for any signs of seizure, binding, bending, or damage so they can continue to function correctly.