NEW
Font size
WorksheetsBrakes ASE
Total questions: 38
Worksheet time: 19mins
Two technicians are discussing drum brake shoes. Technician A says that forward and rear-facing shoes are the same and can be installed in either position on any drum brake system. Technician B says that the darker color linings should always be placed toward the front of the vehicle. Which technician is correct?
Technician A
Technician B
Both A and B
Neither A nor B
Technician A says that the anchor pin (shoe anchor) is used to hold one end of the primary and secondary shoe return springs. Technician B says that the shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which technician is correct?
Technician A
Technician B
Both Technician A and B
Neither Technician A nor B
Which lining does most of the braking on a dual-servo brake?
Both contribute equally
Front (forward facing)
Rear (rearward facing)
Depends on the speed of the vehicle
Which lining does most of the braking on a leading/trailing brake?
Depends on the speed of the vehicle
Trailing (rearward facing)
Both contribute equally
Leading (forward facing)
The brakes on a dual-servo drum system are designated as ________.
Two leading shoes
Primary and Secondary
Leading and Trailing
None of the above
________ action uses drum rotation to force the brake shoe outward and wedge it tightly against the brake drum.
Self- Energizing
Centrifugal
Centripetal
Servo
When removing the Brake line from a Wheel Cylinder, what tool should be used?
Correct size socket
vise grips
Flare nut or line wrench
Allen wrench
As a general rule, how often should brakes be checked?
Every 20,000 miles
Annually
Every 40,000 miles
Every 2 years
Technician A says to make the finish cut at the slowest speed when machining brake drums. Technician B says that the drum should not exceed its discard diameter. Who is correct?
Technician A only
Technician B only
Both Technician A and B
Neither Technician A nor B
Duo-Servo brakes adjust:
When applying the parking brake.
When applying the brakes in forward.
When applying the brakes in reverse.
By variations in fluid pressure.
Leading Trailing brakes are adjusted:
By using the Parking Brake.
When applying the brakes in forward.
When applying the brakes in reverse.
Only manually.
On a Duo-Servo drum brake, when compared to Primary shoe linings, the Secondary shoe linings are:
Shorter than the Primary linings
Longer than the Primary linings
The same length as Primary linings
Made of a harder material
Technician A says that all modern brake linings are bonded to their shoes. Technician B says that some brake linings are riveted to their shoes. Who is correct?
Technician A only
Technician B only
Both Technician A and B
Neither Technician A nor B
After assembling a drum brake, it is discovered that the brake drum will not fit over the new brake shoes. Technician A says that the parking brake cable may not have been fully released. Technician B says to check to see if both shoes are contacting the anchor pin. Which technician is correct?
Technician A only
Technician B only
Both Technician A and B
Neither Technician A nor B
Technician A says that hard spots in a brake drum should be removed using a carbide-tip machining tool. Technician B says the drum should be replaced if hard spots are discovered. Which technician is correct?
Technician A only
Technician B only
Both Technician A and B
Neither Technician A nor B
New rear brake shoes were replaced on a rear-wheel-drive vehicle equipped with front disc brakes and rear drum brakes. During the test drive smoke was observed coming from both rear wheels. Technician A says that this is normal because the new linings always smoke when first heated due to the resins in the lining. Technician B says that the parking brake cable may not have been fully released causing the brakes to drag. Which technician is correct?
Technician A only
Technician B only
Both Technician A and B
Neither Technician A nor B
Which is the most likely cause of chatter marks on the friction surface of a brake drum during machining?
Machining the drum at too fast a speed
Using the wrong cutter
Dirt or grease build up on the inside of the drum
Lack of a vibration damper
New wheel cylinders are being installed. Which operation is not required?
The wheel cylinder should be bled of any trapped air.
The retainer fastener should be torqued to factory specifications.
The brake line should be attached.
Compressing the pistons before installing the wheel cylinder on the backing plate
On a car with disc/drum brakes, the front brakes grab quickly when light pedal pressure is applied. This problem could be cause by a bad:
Proportioning valve
Pressure safety valve
Metering valve
Residual check valve
The driver of a vehicle with power disc/drum brakes says the brake pedal moves slowly to the floor while maintaining pedal pressure at a stoplight. What could cause this problem?
Leaking primary piston cup in master cylinder
Leaking power brake booster
Leaking residual check valve in master cylinder
Internal leak in the combination valve
Which of the following would MOST LIKELY happen if the measurements taken from the check shown above varied from the manufacturer's specifications?
Noisy brake operation
Brake grab or pull
Pulsating brake pedal
Low brake pedal
What is the purpose of the master cylinder residual check valve(s) on vehicles equipped with drum brakes?
Allows the driver to pump up the brakes
Prevents air from entering the hydraulic system
Prevents wheel lockup by reducing the hydraulic pressure
Reduces pedal pulsation by controlling hydraulic pressure
A technician has just overhauled the front brakes on a vehicle with front disc and rear drum brakes. However, when he attaches a pressure bleeder (pressurized to about 25 psi) to the master cylinder, he cannot get any fluid to come out of the disc brake caliper bleeder screws. Which of the following is MOST LIKELY the cause?
Bad proportioning valve
Bad pressure differential valve
Proportioning valve release button not activated
Metering valve release button not activated
On a vehicle with single piston floating caliper front disc brakes, the brake pads on the left side on the vehicle are almost completely worn while the right side is almost new. Technician A says that too much rotor runout could be the cause. Technician B says that a binding caliper piston could be the cause. Who is right?
Technician A only
Technician B only
Both A and B
Neither A nor B
What is the purpose of the bar that is being removed from the brake assembly shown below?
To equalize the braking force between the shoes during normal braking
To center the shoes after each brake application
To force the shoes into the drum when the parking brakes are applied
To reduce the distance between the shoes and the drum
A hydraulic brake line is leaking. Which of the following is the correct repair procedure?
Cut out the bad section and replace with new steel tubing using compression fittings
Replace the leaking line with double-flared, seamless copper tubing
Cut out the bad section and replace with single-flared steel tubing using flare nuts and unions
Replace the leaking line with double-flared steel tubing
The set-up shown above is used to check:
Rotor parallelism
Wheel bearing adjustment
Rotor lateral runout
Rotor face wear
Which of the following problems would be caused by using a residual check valve in a disc brake master cylinder?
Reduced brake pedal travel
Reduced brake system pressure
Increased brake pad wear
Increased rotor runout
Which of the following brake symptoms can be caused by wheel bearing problems?
Pedal pulsation
Brake pull
Grabbing
All of the above
Which component in the Hydro-Boost system provides power assist if there is a loss of hydraulic pressure to the system?
Boost piston
Check valve
Accumulator
Open-center spool valve
A customer complains that the parking brake will not keep his car stationary. The car has four-wheel disc brakes. Technician A says the caliper levers could be out of adjustment. Technician B says the brake shoes could need adjustment. Who is right?
Technician A only
Technician B only
Both A and B
Neither A or B
When replacing an integral hub/bearing assembly on a front wheel drive vehicle, all of the following must be replaced EXCEPT:
Brake rotor
Brake caliper
Steering knuckle
Wheel
A wheel cylinder has been disassembled and corrosion and light scoring have been found in the bore. Technician A says the bore can be refinished using a small hone lubricated with cutting oil. Technician B says oversize pistons and cup seals can be installed if the hone removes too much material. Who is right?
Technician A only
Technician B only
Both A and B
Neither A nor B
Two technicians are discussing traction control systems. Technician A says that some traction control strategies do not use the brakes to control wheel spin. Technician B says that a fault in the ABS does not affect traction control. Who is right?
Technician A only
Technician B only
Both A and B
Neither A nor B
When rough machining a brake drum, the depth of cut and spindle feed rate should be:
0.010-0.015-in. at high feed rate
0.010-0.015-in. at low feed rate
0.005-in. at high feed rate
0.005-in. at low feed rate
In the test shown above, vacuum should:
Exist on the engine side but not on the booster side
Exist on the booster side but not on the engine side
Exist on both sides
Exist on neither side
Technician A says the number on the brake drum shown above indicates the maximum diameter, beyond which the drum should not be used. Technician B says the number indicates the maximum diameter the drum can be machined to. Who is right?
Technician A only
Technician B only
Both A and B
Neither A nor B
A vehicle's brake warning system schematic is shown above. All of the following could cause the brake warning light to stay illuminated EXCEPT:
A short to ground between C105 and C201
A stuck closed parking brake switch
An open between C237 and C305
A leaking wheel cylinder
