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Michigan CDL Air Brakes
exam review with 100%
updated answers!!get a pass
on your first trial!!
3 different braking systems that make up Air Brakes - correct
answers✔️✔️Service Brake, Parking Brake, Emergency Brake
Air Compressor - correct answers✔️✔️Pumps air into storage tanks and
connected to the engine via gears or a v-belt.
Air Compressor Governor - correct answers✔️✔️Controls when the air
compressor will pump air into the air storage tanks. When tank pressure rises to
the cut-out level, the governor stops the compressor from pumping. When the
tank pressure falls to the cut-in level, the governor allow the compressor to pump
again.
Cut-Out Level - correct answers✔️✔️125 PSI (Governor stops the compressor
from pumping air)
Cut-In Level - correct answers✔️✔️100 PSI (Governor allows compressor to start
pumping again)
Air Storage Tanks - correct answers✔️✔️Holds the compressed air.
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Air Tank Drains - correct answers✔️✔️Valve to drain oil and water from the
tanks.
Alcohol Evaporator - correct answers✔️✔️Puts alcohol into the air system to
reduce risk of ice in the valves.
Safety Valve - correct answers✔️✔️In the first take air is pumped in to...protects
the tank and system from too much pressure. Set to open at 150 PSI.
Foundation Brakes - correct answers✔️✔️Used at each wheel...most common
type is the S-Cam drum brake.
Drums, Shoes and Linings - correct answers✔️✔️Drums located on each end of
the axles. Wheels are bolted to the drums. To stop, the brake shoes and linings
are pushed against the inside of the drum.
S-Cam Brakes - correct answers✔️✔️Pressure pushes the rod out, moving the
slack adjuster, thus twisting the brake camshaft. Forces the brake shoes away
from one another and presses them against the inside of the brake drum.
Supply Pressure Gauges - correct answers✔️✔️Tells you how much pressure is in
the air tanks. Will be one for each half the the brake system in dual air brake
systems.
Application Pressure Gauge - correct answers✔️✔️Shows how much pressure
you are applying to brakes. (Not on all vehicles). Increasing pressure to hold same
speed means brakes are fading. Slow down and use lower gear.
SUCCESS
Michigan CDL Air Brakes
exam review with 100%
updated answers!!get a pass
on your first trial!!
3 different braking systems that make up Air Brakes - correct
answers✔️✔️Service Brake, Parking Brake, Emergency Brake
Air Compressor - correct answers✔️✔️Pumps air into storage tanks and
connected to the engine via gears or a v-belt.
Air Compressor Governor - correct answers✔️✔️Controls when the air
compressor will pump air into the air storage tanks. When tank pressure rises to
the cut-out level, the governor stops the compressor from pumping. When the
tank pressure falls to the cut-in level, the governor allow the compressor to pump
again.
Cut-Out Level - correct answers✔️✔️125 PSI (Governor stops the compressor
from pumping air)
Cut-In Level - correct answers✔️✔️100 PSI (Governor allows compressor to start
pumping again)
Air Storage Tanks - correct answers✔️✔️Holds the compressed air.
SUCCESS
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Air Tank Drains - correct answers✔️✔️Valve to drain oil and water from the
tanks.
Alcohol Evaporator - correct answers✔️✔️Puts alcohol into the air system to
reduce risk of ice in the valves.
Safety Valve - correct answers✔️✔️In the first take air is pumped in to...protects
the tank and system from too much pressure. Set to open at 150 PSI.
Foundation Brakes - correct answers✔️✔️Used at each wheel...most common
type is the S-Cam drum brake.
Drums, Shoes and Linings - correct answers✔️✔️Drums located on each end of
the axles. Wheels are bolted to the drums. To stop, the brake shoes and linings
are pushed against the inside of the drum.
S-Cam Brakes - correct answers✔️✔️Pressure pushes the rod out, moving the
slack adjuster, thus twisting the brake camshaft. Forces the brake shoes away
from one another and presses them against the inside of the brake drum.
Supply Pressure Gauges - correct answers✔️✔️Tells you how much pressure is in
the air tanks. Will be one for each half the the brake system in dual air brake
systems.
Application Pressure Gauge - correct answers✔️✔️Shows how much pressure
you are applying to brakes. (Not on all vehicles). Increasing pressure to hold same
speed means brakes are fading. Slow down and use lower gear.
SUCCESS
