T4 BRAKES ASE: LATEST 2025 WITH QUESTIONS AND
CORRECT VERIFIED ACCURATE ANSWERS (A+)
GUARANTEED PASS
What can cause brake drag ? - CORRECT ANSWERS-Excessive S cam radial play - causes lower
shoe to drag
How do you bench test the heater on an air drier? - CORRECT ANSWERS-with an ohm meter
Brake lights on a truck are activated at approximately: - CORRECT ANSWERS-6PSI
What is used to check the operation of a double check valve? - CORRECT ANSWERS-A
pressure Gauge
Maximum s cam axial clearance: - CORRECT ANSWERS-.060inches
A broken backing plate could cause even breaking and cause a pull.. - CORRECT ANSWERS-
True
on a straight truck equipped with air brake, the secondary tank pressure gauge falls to zero when the
wet tank air is drained. Tech A says the one way check valve is faulty, Tech B says the foot valve may be
faulty. Who's correct? - CORRECT ANSWERS-Tech A only. one way check valve protects
secondary tank
A loose wheel bearing adjustment can cause a faulty wheel speed sensor and a wheel speed sensor code
- CORRECT ANSWERS-
Air dryer purges too often. Tech A says the air dryer delivery check Valve may be faulty. Tech B says a
leaking wet tank could be the cause. Who's correct? - CORRECT ANSWERS-C. Both Techs.
, The safety valve releases on the air tank. Which is the most likely cause?
A. plugged line from the supply tank to governor.
B. faulty tractor protection valve
C. stuck spitter on the air drier
D. faulty secondary tank - CORRECT ANSWERS-A. if the line was plugged, the governor would
not unload the compressor
A truck with hydraulic disc/drum brakes has a high firm pedal with poor stopping. what could be the
cause? - CORRECT ANSWERS-The brake linings are glazed! Glazed brake linings will allow the
pedal to feel high and firm with no stopping power
The three ports on a governor are: - CORRECT ANSWERS-Reservoir, Unloaded and exhaust
Pressure valves open at : - CORRECT ANSWERS-150PSI
A new drum will not fit over the brake shoes. All the following could be the cause EXCEPT:
A. an incorrect drum
B. incorrect shoes
C. shoes are not properly adjusted
D. the parking brake is released - CORRECT ANSWERS-D. the parking brake is released
Air compressor has a broken connecting rod. the compressor crankshaft is not discolored. What is the
cause? - CORRECT ANSWERS-restricted air discharge line
all the brakes wear too quick on a truck. what is the cause? - CORRECT ANSWERS-sticking foot
valve - causes brake drag
Tech A says brake fluid should be changed every 12 months or 12000 miles. Tech B says brake fluid
should be purchased in small containers. Whos correct? - CORRECT ANSWERS-Tech B. Brake
fluid should be bought in small containers and used to prevent moisture built up
CORRECT VERIFIED ACCURATE ANSWERS (A+)
GUARANTEED PASS
What can cause brake drag ? - CORRECT ANSWERS-Excessive S cam radial play - causes lower
shoe to drag
How do you bench test the heater on an air drier? - CORRECT ANSWERS-with an ohm meter
Brake lights on a truck are activated at approximately: - CORRECT ANSWERS-6PSI
What is used to check the operation of a double check valve? - CORRECT ANSWERS-A
pressure Gauge
Maximum s cam axial clearance: - CORRECT ANSWERS-.060inches
A broken backing plate could cause even breaking and cause a pull.. - CORRECT ANSWERS-
True
on a straight truck equipped with air brake, the secondary tank pressure gauge falls to zero when the
wet tank air is drained. Tech A says the one way check valve is faulty, Tech B says the foot valve may be
faulty. Who's correct? - CORRECT ANSWERS-Tech A only. one way check valve protects
secondary tank
A loose wheel bearing adjustment can cause a faulty wheel speed sensor and a wheel speed sensor code
- CORRECT ANSWERS-
Air dryer purges too often. Tech A says the air dryer delivery check Valve may be faulty. Tech B says a
leaking wet tank could be the cause. Who's correct? - CORRECT ANSWERS-C. Both Techs.
, The safety valve releases on the air tank. Which is the most likely cause?
A. plugged line from the supply tank to governor.
B. faulty tractor protection valve
C. stuck spitter on the air drier
D. faulty secondary tank - CORRECT ANSWERS-A. if the line was plugged, the governor would
not unload the compressor
A truck with hydraulic disc/drum brakes has a high firm pedal with poor stopping. what could be the
cause? - CORRECT ANSWERS-The brake linings are glazed! Glazed brake linings will allow the
pedal to feel high and firm with no stopping power
The three ports on a governor are: - CORRECT ANSWERS-Reservoir, Unloaded and exhaust
Pressure valves open at : - CORRECT ANSWERS-150PSI
A new drum will not fit over the brake shoes. All the following could be the cause EXCEPT:
A. an incorrect drum
B. incorrect shoes
C. shoes are not properly adjusted
D. the parking brake is released - CORRECT ANSWERS-D. the parking brake is released
Air compressor has a broken connecting rod. the compressor crankshaft is not discolored. What is the
cause? - CORRECT ANSWERS-restricted air discharge line
all the brakes wear too quick on a truck. what is the cause? - CORRECT ANSWERS-sticking foot
valve - causes brake drag
Tech A says brake fluid should be changed every 12 months or 12000 miles. Tech B says brake fluid
should be purchased in small containers. Whos correct? - CORRECT ANSWERS-Tech B. Brake
fluid should be bought in small containers and used to prevent moisture built up
