1. What is a dual air brake system?A 2 brake system, one opeprices the front brakes and also one opeprices the earlier brakes. A two braking mechanism, one for each side of the car. A 2 braking device, one for daytime and one for nighttime driving.2. What are the slack adjusters?It is the space between the back wheels. It is an adjusting nut on the backside of the brake drum supplied for adjusting the brakes. It is an adjusting nut under the cab to adjust the springs.3. How deserve to you inspect the sabsence adjuster?Park on level ground, revolve off parking brakes, pull tough on each slack adjuster. It shouldn’t move even more than one inch. Park on level ground, rotate off parking brake and press brake pedal. Park on an incline and also see if the car rolls.4. How deserve to you test the low pressure warning signal?While the engine is running, step on and also off the brake pedal. Shut off the engine and also check out if the air pressure leaks dvery own. Shut off the engine via sufficient air push, revolve on the electrical power and action on and also off the brake pedal until the low air pressure warning signal comes on.5. What deserve to you examine to view if the spring brakes come on automatically?Step on and off the brake, through the engine off, the parking brake knob need to pop out when air press drops in between 20-40 psi. Get under the auto and pull on the spring brakes. Turn on the engine and also pump the brake pedal down to the floor.6. What are the maximum leakage rates?Less than 4 psi in one minute for single vehicles and also much less than eight psi in one minute for combination vehicles. Less than two psi in one minute for single vehicles and also much less than 3 psi in one minute for combicountry vehicles. Less than 6 psi for all vehicles.7. Should you ever before leave your car unattfinished without applying parking brakes or chocking the wheels?Yes No8. If you are ameans from your vehicle just a brief time, you don’t have to use the parking brake.True False9. How often should you drainpipe air tanks?Daily Weekly Monthly10. The usage of brakes on a long steep downgrade is only a supplement to the braking effect of the engine.True False11. What components can cause brakes to fade or fail?Not pushing the brake pedal tough enough. Over heating, low air push, and also not relying on the engine braking effect.Not taking your foot off the accelerator pedal.12. Why must you be in the proper gear before founding down a hill?So you just need to use the brake just difficult sufficient to feel a definite slowdown. So you don’t have to transition gears going downhill. So you can go with the gears on the method dvery own.13. If oil and also water collect in the air tanks what can happen to the brakes?The brakes might warmth up. The brakes might fail. The brakes can lock up.14. What is the function of an alcohol evaporator?So you don’t have to drainpipe the air tanks as regularly. To have actually a drink obtainable if you obtain thirsty. To mitigate the risk of ice in the brake valves and other parts in cold weather.15. What is an additional name for managed braking?Steady braking Squeeze braking Hard braking

Answer Key

1. A  2. B  3. A  4. C  5. A  6. B  7. B  8. B  9. A  10. A  11. B  12. A  13. B  14.


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C  15. B


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