CDL Air Brakes 24 Questions And Answers
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Terms in this set
24
How many breaking systems are there? List them out
1. Service
2. Parking
3. Emergency
2. Parking
3. Emergency
What is the function of emergency breaking system
uses parts of the
service and parking brake systems to stop the
vehicle in a brake system failure.
service and parking brake systems to stop the
vehicle in a brake system failure.
How is air compressor connected to truck
The air compressor is connected
to the engine through gears or a v-belt.
to the engine through gears or a v-belt.
How is the air compressor cooled
Cooled by air cooling system or engine cooling system
Where does the oil for compressor come from
Has it own or uses oil from engine
What psi does the air compressor start and stop pumping air
Stops pumping air at 125 psi and starts pumping air at 100 psi
What size of air tank do you need on your vehicle and how do you know it is large enough and why do you need a certain size?
Size and number of tanks vary but you should be able to use brakes several times incase your compressor stops working
How many types of drain valves are there list them and how they work
1. Manuel you manually drain by pulling a cable or by turning a quarter of a turn to drain
2. Automatic where the system drains itself
2. Automatic where the system drains itself
What is the alcohol evaporator function
Puts alcohol in air system to prevent water from freezing in brake valves and causing break failures
Does an automatic drain valve system require you to put alcohol in it
No