WorksheetsAutomotive certification
Total questions: 28
Worksheet time: 14mins
tech a says the drum brake should be removed to preformed the bleed procedure.
tech b says the fluid in the master cylinder should be kept during the bleed procedure.
Tech a
Tech b
both
Neither
A load sensing proportioning value increase fluid?
Pressure to the rear wheels when the rear of the vehicle is weighted down
Pressure to the Front wheels when the rear of the vehicle is weighted down
Volume exiting the master cylinder to the rear wheels when the rear is unloaded
Volume exiting the master cylinder to the Front wheels when the rear is unloaded
an out of round brake drum can result in
Brake pedal pulsation
loss of brake fluid
shimmy in the steering system
excessive brake pull on the opposite side.
Where on the wheel cylinder does the manufacturer locate the bleeder screw?
To the extreme right
To the extreme left
On the top
On the bottom
the self- energizing brake shoes of a drum brake system will
Retract the wheel cylinder pistons more quickly
generate additional stopping power
reduce brake drum operating temperature
reduce tendency for wheel lockup
he right drum brakes gran jut before coming to a stop on a light duty truck equipped with disc/ brake which of these could be the cause
both rear drum machined to oversight limit
excessive radial tire run out on the right rear
a leaking metering valve
contaminated brake shoes
one of the inside pads on a fixed caliper system is worn more than the other pads this could be caused by
a restricted brake hose
a stuck combination valve
a restricted metering valve
a stuck caliper piston
A vehicle equipped with a 4 wheel disc brake system has poor braking effieincy and a low brake pedal. The cause could be?
a warped brake rotors
a seized brake caliper piston
seizd brake caliper slide pins
an internal leak in the master cylinder.
a pulsation is felt when the brake pedal is applied. during a load test detects no pulsation while the parking brake (rear drum activated) is applied this could be caused by?
out of round drums
warped rotors
worn shoes
worn pads
Tech a says that some rotors should be machined on the vehicle.
tech b says that a rotor final cut should be machined at a high rotational speed who is right
A
B
Both
Neither
With the brakes applied. the brake pedal drops slightly when the engine is started. this indicated:
an abs failure
A vacuum leak
air in the hydraulic system
normal vacuum booster operation
A vehicle with a vacuum booster requires excessive pedal pressure
tech a says that a restricted vacuum line could be the cause
tech b says that a leaking vacuum line could be the cause
a
b
both
neither
which of these supplies the power needed for brake assist on a vehicle equipped with a hydro-boost system
intake manifold
vacuum pump
power steering pump
exhaust manifold
all of these could cause the brake warning lamp to illuminate except
an applied parking brake
worn brake rotors
low brake fluid level
a hydraulic leak
During a multipoint inspection, a cable activated parking brake does not hold. which of these should the tech do next
Replace the parking brake cable
adjust the parking brake cable
notify the customer
replace the parking brake shoes/pads
When driving a grinding noise is heard when turning to the right. The noise disappears when the wheel is turned straight or to the left.
Tech a says that the left front wheel bearing may be bad
Tech b says that the right front wheel lug nut have been over torqued
a
b
both
neither
when adjusting rear drum parking brakes
the service brakes should be adjusted before the parking brake cable is adjusted.
the parking brake cable should be adjusted before the service brakes are adjusted.
the master cylinder pushrod should be adjusted before the service brake are adjusted.
the order of adjustment is not important
a tech observes that after the parking brake is fully released. The parking brake indicator light remains on.
Tech a says that an open pressure differential switch could be the cause.
Tech b says that the parking brake light switch shorted to ground be the cause.
A
B
Both
Neither
What happens if a wheel speed sensor fault set in the ABS control module.
The ABS and basic brake becomes inoperative
The malfunction indicator lamp illuminates
The ABS warning lamp illuminates
the pedal pulses during braking
A vehicles front brake pads, rotors and wheel speed sensors are being replaced. During the road test, a tech noticed that the ABS system energized during light pedal applications at low speeds. which of these would be the cause?
Incorrect brake pad material
air trapped in the hydraulic system
incorrect wheel speed sensor air gap
roughness on the caliper slide surfaces
Unevenly torqued lug nuts could result in
Vibration while braking
brake squeal
premature brake pad wear
pull to one side during braking
After replacing only the disc brake pads, all of these should be done before road testing the vehicle except
Torque the lug nuts
bleed the brakes
check the master cylinder fluid level
apply the brakes sever times
A high milage vehicle equipped with bs experiences fade after extended heavy braking. the O.E.M. brake fluid specification is dot 4
Tech a says improve performance the brake system should be purges and D.O.T. 5 brake fluid installed.
Tech b says improve performance the brake system should be purges and D.O.T. 3 brake fluid installed.
A
B
Both
Neither
Aggressive high-speed braking with new pads that have not been "broken in" could cause all of these except:
Reduced pad life
Brakesqueal
Glazed rotor finish
low brake fluid level
The best place to find handling instructions of hazardous materials is?
Product label
Employee handbook
purchase receipt
SDS (MDS) sheet
Excessive brake pedal travel could be caused by all except.
Air in the brake lines
plugged brake line
Worn brake shoes
Frozen automatic adjuster
On a vehicle with disc/drum brakes which of these will delay the application of the rear brake during light braking
Residual pressure valve
Pressure differential valve
Metering (hold-off) valve
Proportioning valve
The brake are dragging on all wheels of a vehicle. this could be caused by?
Low brake fluid level
Too little brake pedal free travel
Excessive brake pedal free travel
A restricted flex brake hose
