Inspection第 32 / 60 题
For a single vehicle (straight truck), what is the maximum allowable air pressure loss in one minute with the brakes applied?
a.1 psi
b.3 psi
c.6 psi
d.10 psi
解析
For a single vehicle, air pressure should not drop more than 3 psi in one minute when the brakes are fully applied and the engine is off. For a combination vehicle, the limit is 4 psi in one minute. A larger loss indicates a leak too big to be safe.
免费刷完整 60 道题库 — 无需注册。
同考点相关题目
- How do you test the low-pressure warning signal?
- At what pressure should the spring brakes come on automatically during the continued-air-loss test?
- How do you perform the static leakage (applied pressure) test on a straight truck with air brakes?
- 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?
- How do you test that the parking (spring) brakes hold?