Advanced Brake System Overview Exam Summer 2024.
1. A bypassing master cylinder can be detected by the:
A. Internal leak test
B. External leak test
C. Compensating port test
D. QTU test -
2. A correctly honed cylinder bore should be:
A. Have a smooth, polished surface
B. Have a cross-...
Advanced Brake System Overview Exam Summer 2024.
1. A bypassing master cylinder can be detected by the:
A. Internal leak test
B. External leak test
C. Compensating port test
D. QTU test - * CORRECT ANSWER* A
2. A correctly honed cylinder bore should be:
A. Have a smooth, polished surface
B. Have a cross-hatch pattern
C. Be larger than the original size by a specified amount
D. have scoring no deeper than 0.006 inch - * CORRECT
ANSWER* B
3. A dial indicator can be used to check a brake rotor for:
A. Radial runout
B. Parallelism
C. Taper variation
D. Lateral runout - * CORRECT ANSWER* D
4. A leaky wheel cylinder can cause:
A. Grabbing
B. Loss of stopping power
C. A grunting or groaning noise when the brakes are applied
D. All of the above - * CORRECT ANSWER* D
5. A stuck ABS isolation valve could cause a brake pull.
A. True
B. False - * CORRECT ANSWER* A
6. A vehicle equipped with ABS exhibits a brake pull when the brakes
are moderately applied. The amber ABS indicator on the dash is
functioning correctly and proves out when the vehicle is started. The
most likely cause of the brake pull is:
A. A stuck ABS isolation valve
B. A faulty wheel speed sensor signal
C. A blown ABS pump motor fuse
D. A concern not related to the ABS system - * CORRECT
ANSWER* D
,7. A vehicle has the master cylinder mounted next to the steering
column in front of the driver. Tech A says that the right front wheel is
the first to be bled, followed by the left rear. Tech B says that it takes
3 to 5 strokes of the pedal to bleed each cylinder, and the bleeder
valve should be closed prior to the down stroke. Who is right?
A. A only
B. B only
C. Both
D. Neither - * CORRECT ANSWER* D
8. A wheel bearing that needs to be serviced may exhibit all of the
following EXCEPT:
A. Roughness
B. Grease seal leakage
C. Excessive axial play
D. Lack of parallelism - * CORRECT ANSWER* D
9. After bleeding brakes:
A. The pressure differential switch may need to be recentered.
B. The metering valve may need to be adjusted.
C. The proportioning valve may need to be recentered.
D. The pressure differential switch may need to be adjusted. - *
CORRECT ANSWER* A
10. All of the following indicate that wheel bearings need service
except:
A. a growling sound that increases with cornering load
B. A body vibration that occurs when the brakes are applied.
C. roughness, grease seal leakage, and excessive axle play
D. A growling sound that occurs only when the brakes are applied -
* CORRECT ANSWER* D
11. An ABS warning lamp that comes on when the vehicle first
begins to move generally indicates:
A. A wheel speed sensor problem
B. A master cylinder problem
C. An isolation valve problem
D. An accumulator problem - * CORRECT ANSWER* A
12. An unwanted ground may cause the red brake warning lamp to
illuminate, even if there are no other problems in the system
A. True
, B. False - * CORRECT ANSWER* A
13. As a general rule, disc brake pads must be replaced if the
friction lining thickness measures less than:
A. 0.020 inch
B. 0.030 inch
C. 0.060 inch
D. 0.130 inch - * CORRECT ANSWER* B
14. Brake lights should come on when the brake pedal moves down:
A. 0.005 inch
B. 0.05 inch
C. 1/8 inch
D. 1/2 inch - * CORRECT ANSWER* D
15. Brake pedal reserve that gradually fades under light pressure
indicates:
A. Leaks in the brake lines
B. Weak brake pedal return spring tension
C. Internal Leaks
D. The system is operating properly - * CORRECT ANSWER* C
16. Brake Pedal reserve that gradually fades under light pressure
indicates:
a. A brake line restriction
B. Spring tension on the brake pedal is weak
C. Internal Leaks
D. The system is operating properly - * CORRECT ANSWER* c
17. Brake squeal may be caused by all of the following EXCEPT:
A. A poor rotor friction surface
B. missing pad shims
C. A leaking caliper piston seal
D. Poor quality linings - * CORRECT ANSWER* C
18. Check for pedal pulsation in front disc brakes by:
A. Applying brakes in reverse
B. Braking hard from high speed
C. Coasting and applying the parking brake
D. Feeling for steering wheel rocking while braking lightly at low
speed - * CORRECT ANSWER* D
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