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15 Cards in this Set
- Front
- Back
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The spring brakes used on tractors and straigth trucks will bring your truck to a stop when the air pressure drops below:
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20psi
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Excessive heat caused by using your brakes to often can cause the
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Brakes to fade or Fail
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If air Pressure does NOT build up to normal with in the correct amount of time, then:
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Your air pressure may droop to low during driving, requiring an emergency stop
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If your truck has a dual air system and one of the systems is low on pressure:
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Either the the front or rear brakes will not be fully operational.
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in air brakes vehicles, the parking brake should be use:
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Any time the vehicle is parked
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The braking power of the spring brakes:
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Depends on the service brakes being in adjustment
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the driver must be able to see the warning before air pressure in the service air tanks falls below:
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60psi
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The use of air brakes on a long and/ or steep downgrade under normal conditions is only a supplement to:
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The braking effect of the engine
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The air compressor governor controls:
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when air is pumped into the air tanks
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The parking or emergency brake on heavy vehicle can only be held in position by something that can not be leak away, like:
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Spring Pressure
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The brake pedal in air brake system
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Controls the air pressure applied to put on the brakes
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If you must make an emergency stop, bakes so you
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Can steer and your vehicle stays in a stray line
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a supply pressure gauge tells you how much air is in the:
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Air tanks
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Under normal condition, in order to engage the parking brakes the driver must first
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let the air out of the air brake system
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for air brake systems in good condition, the air compressor should start pumping at about
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100psi
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