drum is chattering on the brake lathe. This could be the result of:
A missing dampening belt could cause the drum to vibrate while on the lathe. This
... [Show More] vibration can cause the drum to bounce on the cutting tip and make a chattering noise.
A vehicle equipped with a hydro-boost brake system has a hard pedal with little braking action. Which of the following could be the cause?
Low power steering fluid can cause the booster to provide very little if any boost.
Which of the following could cause excessive noise while braking?
Missing anti-rattle clips could cause excessive noise while braking
A vehicle equipped with a "hill holding" option has a abs code. Which two would most likely be used to check the wheel speed sensor
A scan tool or oscilloscope can be used to test a signal from a digital wheel speed sensor.
The brake system has a soft, sinking pedal with the engine running. The brake fluid level is at the correct height. Which of the following could be the cause?
A bypassing master cylinder would cause a low pedal and would not cause a loss of fluid.
Refer to the figure above. Technician A says the pins should be driven in with a brass hammer. Technician B says the pins should be lubricated with brake fluid. Who is correct
Neither technician is correct. This style of pin should be installed with a torx or hex head socket.
Technician A says a hydro-boost system can use the power steering pump to operate the booster. Technician B says a hydro-boost system can use engine vacuum to operate the booster. Who is correct?
Only Technician A is correct. A hydro-boost system uses hydraulic pressure to create boost
A disc brake caliper is dragging. All of the following could be the cause EXCEPT:
Worn brake pads will not cause the brakes to drag.
Which operation is being performed in the illustration above?
The master cylinder is being bleed prior to installation.
The rear wheels of a front wheel drive car lockup during heavy braking. Technician A says this could be caused by a faulty proportioning valve. Technician B says this could be caused by a faulty brake booster. Who is correct?
Technician A is correct. A faulty proportioning valve could cause the pressure to the rear wheels to be too high and lock the wheels during hard braking.
There is a loud growling noise only when the vehicle is steered to the right while driving Which of the following could be the cause?
This is a typical wheel bearing noise.
A spongy pedal can be the result of:
A spongy pedal can result from air in the hydraulic system. Leaking wheel cylinders could allow air to get into the hydraulic system and result in a spongy pedal.
A vehicle has a wheel speed sensor diagnostic trouble code. Which of the following is the LEAST LIKELY cause?
The width of the tire will not affect the wheel speed sensor signal.
A vehicle has a squeak only when applying the brakes. Which of the following could be the cause?
Worn pads can cause a squeak when applying the brakes.
During a moderate brake pedal application, with the engine running, which of the following would be considered a normal pressure reading on the inlet pressure gauge shown in the figure above?
900 psi This would be normal.
Which of the following would be the most normal end-play specification for a set of tapered roller front wheel bearings?
0.0010"-0.0050" (0.0254mm-0.127mm) This is the correct specification.
Brake chatter can be caused by:
Contaminated linings could cause the brake shoes to stick and slip, which would cause a chattering condition.
Technician A says an analog wheel speed sensor can detect which direction the wheel is turning. Technician B says a digital wheel speed sensor can detect which direction the wheel is turning. Who is correct?
Only Technician B is correct. A digital wheel speed sensor can indicate direction by detecting narrow and wide slots on the reluctor ring.
All of the following are the result of brake pad burnishing EXCEPT:
Brake rotors do not need the metal cured.
When bench bleeding a master cylinder which statement is true?
New brake fluid should be used when bleeding the master cylinder.
The technician is preparing to do a brake job on a vehicle equipped with integral ABS. Which of the following should be done?
The pedal should be pumped 25-40 times to bleed all the pressure from the ABS accumulator.
Refer to the illustration above. braking system (ABS) modulator valve. Technician B says pressure is being tested at the Technician A says pressure is being tested at the antilock combination valve. Who is correct?
Only Technician B is correct. This is a combination valve.
A customer has a noise concern coming from the rear of the vehicle. All of the following could be the cause EXCEPT:
Rear tires out of balance would cause a vibration but not a noisC. [Show Less]