How should you check that your service brakes are working properly?

How should you check that your service brakes are working properly?

• A. Park on level ground, release the parking brakes, roll forward slowly and apply the brakes using the pedal
• B. Park on a grade, start the engine and accelerate gently
• C. Check the brake fluid while driving at 40 mph
• D. Listen for a brake toe-tapping sound under the dash

Answer: (A)

Testing service brakes means verifying they respond promptly and stop the vehicle without help from the parking brake. Do this on level ground: release the parking brake, roll forward slowly, and press the foot brake firmly. The truck should slow and come to a controlled stop, with the pedal feeling firm and full travel, and the vehicle should not pull to either side or show unusual noises. This shows the braking system is functioning under normal operation. Avoid other approaches like starting the engine on a grade and revving, which don’t assess braking performance; checking brake fluid while driving at high speed, which is unsafe and not a proper test; or listening for a toe-tapping sound under the dash, which isn’t a reliable indicator of brake effectiveness.

Testing service brakes means verifying they respond promptly and stop the vehicle without help from the parking brake. Do this on level ground: release the parking brake, roll forward slowly, and press the foot brake firmly. The truck should slow and come to a controlled stop, with the pedal feeling firm and full travel, and the vehicle should not pull to either side or show unusual noises. This shows the braking system is functioning under normal operation.

Avoid other approaches like starting the engine on a grade and revving, which don’t assess braking performance; checking brake fluid while driving at high speed, which is unsafe and not a proper test; or listening for a toe-tapping sound under the dash, which isn’t a reliable indicator of brake effectiveness.