the Flexible line Connected to the right/front disc brake caliper is cracked. Which of the following should the technicain do?
Replace all rubber and steel hoese on vehicle
replace the hose with a new one*
replace all the rubber hoses on the vechicle
repa
During the service of a drum brake system, the screws threads of the drum brake self adjusters should be lubricated with which of the following?
anti seeze*
chassis grease
Lubriplate
engine oil
Brake lights should illuminate when the brake pedal moves down?
.005
.05
1/8
1/2*
the brake caliper piston boot was cut when the caliper was reassembled. tech A says this will cause a brake fluid leak when the caliper is reinstalled. Tech B says this could cause the piston to bind due to contamination. Who is correct?
tech B only
A set of tapered roller beariing are beind serviced. Which of the following is true concering the correct tightening procedure?
tighten the nut to 75ft lbs
tighten the nut to spec and back off one turn
the final check should be made with a dial indicator*
the brake warining lamp is illustrated in the figure.
the lamp dose not illumiate when the parking brake is applied. It operates normally. which is the cause?
an open gound at the parking brake switch*
an open gound at the master cylinder
an open fuse at
brake chatter can be caused by
seized star-wheel adjuster
seized wheel cylinder
contaminated lining*
switched primary and secondary shoebrake
Tech A says that if a master cylinder pushrod is adjusted too long, it could result in repeated master cylinder failure. Tech B says if A master cylinder pushrod is adj too long it could cause brakes to drag. Who is right?
tech B
vacuum to the booster is measured with the engine idling. Which of the following would be considered a normal reading.
5 Hg
11 Hg
18 Hg*
25 Hg
when adjusting parking brake which of the following is correct?
adjust cable first, then shoes
adjust shoes first, then the cable*
adjust the calipers first, then the shoes
adjust the calipers first, then the cable
the brake pads need to be replaced onthe system shown. Which of the following is true?
the adjust blot must be retracted prior to pad install*
the adjust bolt must be retracted prior to pad removal
the adjust bolt must be extended prior to pad install
the
All of the following are the result of brake pad burnsing EXCEPT
forms the new pads to the rotor
cures the materials in the friction material*
provides for better braking
cures the metal in the rotor
which of the following brake bleeding methods typically requies two techs
brake pedal bleeding*
gavity bleeding
vacuum bleeding
pressure bleeding
when installing the slide pins on the disc brake caliper the tech finds one hole stripped out. Which of the following is the most ecomomical repair?
the caliper must be replaced*
the disc brake rotor must be replaced
there may be oversized bolts available
tech a says a hydro boost system can cause the power steering pump to operate the booster. Tech B says a hydro boost system can use engine vacuum to operate booster who is correct.?
A only*
The break fluid reservior is low on fluid. Which of the following is the most likely cause?
worn pads*
worn shoes
bypassing master cylinder
leaking vaccum check valve
which of the following is true concering the caliper shown
this caliper incorporates the parking brake*
the caliper can be used on the front
the caliper can be only used with typer 5 brake fluid
the caliper must be replaced at each brake pad replacement
All of the following conditions will illuminate the Red warning brake light except:
a leaking wheel cylinder*
low pressure to the hydraulic brake booster
broken brake hose
a faulty master cylinder
When applying moderate brake pad pressure, with the engine running, which of the following would be considered a normal pressure reading on the inlet pressure gauge in the figure shown?
100psi*
900psi
3000psi
5000psi
when using the tool shown, a tech discovers that the brake shoes are larger than the brake drum. which of the following should the tech do next?
replace the brake shoes
replace the brake drum
machine the brake drum
turn the adjuster*
a customer is concerned that on dry payment, their vechicel will occasionally have a rapid brake pulsation similar to the feel of an ABS stop. Which is likely?
faulty wheel speed sensor
faulty master cylinder
faulty ABS control module*
faulty brake booser
the brake warning lamp is shown stays on anytime the ignition switch is on. Tech A says this could be cause by poor ground at the parking brake swtich. Tech B says this could be caused by a poor gound at the brake warning lamp switch. Who is correct?
tech
Which of the following is the correct way to handle brake fluid?
brake fluid dose not have and experation date
store in a container that vents
store in small, tightly sealed containeers*
store in refigerated enviroment
a drum is chattering on the brake lathe. this could be a result of ?
cutting speed too slow
failure to install the dampeing belt
dull cutting bits*
cutting speed too fast
tech A says that mixing dot 4 and dot 5 fluid will not cause any problems. Tech B says mixing dot 5 and dot 3 will not cause any problems who is correct?
neither a nor b*
A vehhicle pulls to the right while braking. The most likely cause would be?
seized left caliper slides*
faulty metering valve
seized right wheel cylinder
faulty master cylinder
the minum rotor thickness is 1.250( 31.75mm)
which of the following measuerments would indicate the rotor is reusable?
38.61mm*
a customoer says their car makes more noise on asphalt than on concrete road. which could be the cause?
front wheel bearing wear
rear wheel bearing wear
aggressive tire tread patterns*
work brake pads
A vechicle equpied with a hydro boost system is leaking fluid. Where the booster and master cylinder meet. Which is true?
a leak here can only come from booster assembly
a leak here can only come from master cylinder
a pink fluid here would indicate brake
tech A says on a drum brake system the primary shoe goes toward the front of the vehcile. Tech B says the secondary brake shoe gose toward the rear of the vechicle. who is right?
neither a nor B
the brake fluid has been contaminated with oil. Which of the following is correct?
all rubber componets must be repalced*
only rubber componets which show contaminated be replaced
all steel lines must be replaced
only steel lines which show contamination
the brake pedal on a vehicle slowly drops while the vehcile is sitting at a stop light. Which of the following could be the cause?
a restricted vacuume hose
externally leaking master cylinder
a bypassing master cylinder*
a stuck open vacuum check valve
a vehicle is brought into the shop with low, firm brake pedal, which is likely cause?
out of round drums
leaking wheel cylinders
exessive rotor runout*
improperly adjusted brake shoes
tech A says a scan tool may be necessary to bled the brakes on a ABS equiped vehicle. Tech B says bleeding the brakes on a ABS equiped vechile may be a two tech job. who is correct.
both A and B
rotor runout is checked with a dial indicator and found to be out of round. the rotor is removed, rotated 180, and reinstalled. The runout is checked again and found to be withign spec. Which is indicated?
the rotor should be replaced
the hub should be re
tech A says that the lug nut for aluminum wheels should be torqued in a circle pattern. Tech B says lug for steel wheel should be torque in a star pattern. who is correct?
Tech B only
Which of the following could cause excessive noise while braking
worn wheel cylinders
worn caliper pistons
seized caliper slides
missing clips*
on a vehicle with front wheel drive FWD, the rear wheels lock up during heavy braking. Tech A says faulty proporting valve could be the cause. Tech B says a faulty brake booster could be the cause. Who is correct?
tech A only
A glazed brake drum would be caused by which of the following conditions?
missing brake shoe lining
air in the hydraulic system
a dragging brake shoe
a seized wheel cylinder*
a digital WSS is being checked. When the sensor is disconnected the tech finds 5V on the control moodule side of the connector. Which of the following is true.
the Volt should be 12 V during this check.
there should be no volt present*
there should be 2V
A vehicle has a faulty step bore master cylinder. Tech A says that a step bore master cylinder cannot be rebuilt because it cannot be honned. Tech B says that the brake booster must also be replaced along with the master cylinder. Who is right?
Tech A onl
the height sensing proportioing valve
limints the rear brake pressure when the rear is fully loaded*
limits the rear brake pressure when the rear is lightlyloaded
limints the front brakes when the front is fully loaded
limits the front brakes when the fro
A vehicle has a wheel speed sensor diag trouble code. Which of the following is least likely cause?
faulty wheel speed sensor
cracked WSS reluctor ring*
a tire with incorrect height
a tire with incorrect width
The brake pads are worn at an angle on a vehicle with a sliding brake caliper system. Which of the following is the most likely cause
worn caliper piston
worn caliper bushings*
leaking caliper seal
leaking caliper boot
while testing a vehicle eqquiped with a vacuum brake booster, if the engine is shut off and pressure applied to the brake pedal the pedal is hard and firm. Otherwise the brakes function normally. Which of the following is indicated by this?
a restricted v
a vehicle comes back into the shop with a brake pulsating after having the rotors replaced. Which of the following is the most likely cause?
over toruqued lug nuts
under torgued lug nuts*
sticking slides
inocorrect brake fluid installed
a caliper piston seal is leaking. Which of the following would most likely be the result
the amber ABS light
the traction Control light
brake pedal effort would increase*
brake pedal effort would decrease
during a brake pressure test using two gagues, both gagues read lower than normal. Tech A says low secondary reservoir fluid level could be the cause. Tech B says low primary fluid could be the cause. Who is correct?
both A and B
with the engine running, the brake system has a soft sinking pedal. the Brake fluid is full. Which of the following could be the result.
a bypassing master cylinder*
a leaking master cylinder
a restricted vacuum hose
a stuck open vacuum check valve
a Vehicle right rear brake drum will rotate freely forward but will bind when rotated backward. Which is the most likely cause\?
a broken return spring on the front brake shoe
a broken return spring on the rear shoe
an out of round brake drum*
a biding wh
when the brake line is loosend at the master cylinder no fluid will drip from the loosened line. however when the brake pedal is pulled up fluid will start to drip. which of the following is indicated?
the master cylinder should be replaced
the master cyl
a rigid brake line has failed and requires repalcement. Tech A says that a new section of ridge line can be installed using compression fittings. Tech B says new section of line can be installed using ISO or double flare. Who is correct?
Tech B only
the tech is prep to do a brake job on a vehicle eqqupied with non ABS. Which of the following should the tech do?
pump the pedal 25 to 40 times*
support the vehicle on a jack
support the vechile on jack stands
realse the vacuum from the brake booster
Tech A says maching the rotor on the vehicle helps to compensate for hub runout. tech B says maching the rotor on the rear vehcile helps to compensate for wheel runout. Who is correct?
both A and B
when the parking brake is released the brake pedal fails to return to its most upward position. Tech A says faulty master cylinder could be the cause. Tech B says air trapped in the brake fluid is the cause. Who is correct?
neither A nor B
Which of the following is true in regards to bench bleeding a master cylinder?
mineral oil should be used
spirits should be used
new brake fluid should be used*
Tech A says rust can cause faulty WSS sensor signal. Tech B says a defective brake switch can cuse faulty WSS signal. Who is correct?
Neither a nor B
A single channel ABS will have installed on
the front wheels only
the left side only
the rear wheels only*
the right side only
When reinstalling the caliper slide pins, they should be lubricated with
High temp wheel bering grease*
high temp silicon greaes
lubripate
anti seizlubr
A customer is concerned that under heavy accerleration on dry pavement, the traction control lght comes on and the throttle momentarily becomes unresponsive. Which is the most likely cause:?
a tire has lost traction
the Accelerator pedal position sensor i
tech A says that some wheel cylinders cannot be honned. Tech b says that leaking wheel cylinders can be identifed by looking inside each of its dust boots. who is correct?
tech A only
tech A says that a cracked brake hose that is not leaking need not be repalced. Tech B says a brake hose with a blister must be replaced. who is correct?
tech B only
which of the following is a typical input to the ABS control module?
brake light switch
pressure diff switch*
PRNDL switch
power steering pressure switch
Which of the following is true concering caliper removal?
the fluid must be draning prior to removal
the caliper sliding pinds must be removed prior to removal*
the piston must be repalced every time the caliper is, removed
the boot must be replaced every