InspectionCâu 35 / 60
How do you test that the parking (spring) brakes hold?
a.Set the parking brake and gently pull forward in low gear to confirm it holds the vehicle
b.Rev the engine with the brakes off
c.Drain the tanks and drive forward
d.Apply the trailer hand valve only
Giải thích
With the vehicle stopped, apply the parking brake, then gently try to move forward in a low gear against the parking brake. The parking brakes should hold the vehicle in place. If they do not, they are faulty and must be repaired before driving.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- For a single vehicle (straight truck), what is the maximum allowable air pressure loss in one minute with the brakes applied?
- With the engine off and brakes released, what is the maximum allowable air leakage per minute for a straight truck?
- How should you test that the service brakes are working before driving?
- What should you check about the brake drums or discs during a walk-around inspection?
- During inspection, brake linings (shoes or pads) should be checked for what?
- When inspecting the air lines and hoses, what should you look for?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Air Brakes Knowledge Test · Quy trình kiểm tra