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WorksheetsJunior Weekly Quiz 12/4/2020
Total questions: 20
Worksheet time: 18mins
Which of the following is not part of a drum brake assembly?
Wheel cylinder.
Booster
shoe
drum
A certain automotive brake system’s residual pressure valve maintains residual fluid pressure of 9 psi. What is the purpose of this residual pressure?
To keep the brakes partially engaged at all times.
To prevent contaminants from entering the system.
To equalize braking action at each wheel.
To prevent wheel lockup during heavy brake applications.
A hydro-boost power brake system uses pressure from the power steering pump. True or False?
TRUE
FALSE
Device that uses system pressure to produce friction for slowing or stopping wheel rotation.
master cylinder reservoir
brake disc
wheel brake assembly
secondary piston
A hydraulic piston-type pump that stores brake fluid and develops pressure for a brake system.
cup
master cylinder
hybrid brake
wheel cylinder assembly
cup
master cylinder
wheel cylinder assembly
hybrid brake
A brake pedal that slowly goes to the floor when the brakes are applied, with the engine off, with no fluid loss could indicate the
master cylinder is defective
brake pads or brake shoes may be worn out
power brake booster is defective
brake fluid is low
If all four wheels tend to slowly lock up while driving, the most likely trouble would be in the
brake drums
brake shoes
master cylinder
wheel cylinder
When replacing the left front caliper on a diagonally spilt brake system, the correct bleeding sequence is
left front - right rear
right front - left rear
right rear - left front
left rear - right front
When turning a scored brake drum, the maximum oversize limit for MOST automobiles would be
0.030 inch
0.060 inch
0.090 inch
0.110 inch
The number 10.090 cast into the brake drum refers to the
minimum diameter of the drum
discard diameter
original size of the drum
manufacturer's part number of the drum
When using a brake drum lathe, the technician should always use
a vibration damper belt
safety glasses
cutting oil
both A and B
The type of disc brake calipers found on most American automobiles is
single-piston floating
two-piston fixed
two-piston floating
single-piston fixed
A disc brake rotor's total indicated runout reading should be
0.005 inch or less
between 0.006 inch and 0.039 inch
between 0.040 inch and 0.06 inch
disregard
When checking for parallelism on a disc brake rotor, the technician should use a
tape measure
micrometer
dial indicator
linear caliper
For lateral runout, a technician should use a
tape measure
micrometer
dial indicator
linear caliper
A high hard brake pedal and excessive stopping distances could indicate.
low brake fluid
a defective power brake booster
air in the hydraulic brake system
brake pads may be worn out
Vacuum-assist power brake units have __________reserve stops
0
2 to 3
5 to 7
8 to 10
When using manufacturer's diagnostic routines for traction control,
the technician can retrieve DTCs by using scan tools
DTCs can be ignored if they do not match customer's symptom
DTCs symptom charts are only a suggested diagnostic route
visual inspection may be eliminated if DTCs are present
When following a manufacturer's diagnostic routine, which of the following is correct?
DTC is the last step in diagnosis process
Diagnosis by symptom charts is helpful if no traction control DTC is present.
Basic brakes and engine concerns do not affect traction control performance
Traction control only works in cold weather states
When using manufacturer's diagnostic material, it is TRUE that
a general description of the system is USUALLY found in the beginning of the diagnostic section
failure to follow flow charts will usually result in repairing vehicles
known good components means that
defective parts may be substituted for diagnostic purposes
no DTCs means the system is okay
