WorksheetsBrakes - part 3
Total questions: 13
Worksheet time: 7mins
Which of the following conditions can cause brake pedal fade (when the pedal is firm at first, but gradually sinks to the floor with the same pressure applied)
Seized wheel cylinder piston
Brake drum machined beyond limit
Leakage past the master cylinder cups
Air in the hydraulic system
A vehicle with disc/drum brakes has a hard to push brake pedal. When starting the engine with the pedal applied, the pedal does not drop at all.
Technician A says excessive brake pedal free play could be the cause
Technician B says air trapped in the hydraulic system is the likely cause
Who do you agree with?
Technician A
Technician B
Neither
Both
A 1999 Ford F150 with drum brakes had a leaking axle seal. You are making an estimate to repair it. You see the seal is leaking, and the drum brake shoes are covered in oil. What do you recommend?
Replace the axle seal and replace the oil soaked brake shoes
Replace the axle seal, and clean the oil off the brake shoes
Replace the axle assembly
Flush the brake fluid and bleed the brake system
On a car with disc/drum brakes, the front brakes lock up with light pedal application. You should suspect an issue with the:
Residual check valve
Proportioning valve
Pressure differential switch
Metering valve
All of these EXCEPT one can cause a low brake pedal:
Brake adjustment
Loose wheel bearing
Low brake fluid
Seized caliper piston
A spongy brake pedal on a vehicle with 4 wheel disc brakes with longer than normal travel indicates which of the following?
Air in the hydraulic system
Caliper piston seized
Parking brake out of adjustment
Faulty power booster
A car with 4 wheel disc brakes has a brake squeal
Technician A says a defective proportioning valve is a likely cause
Technician B says that squeals are often caused by movement of the brake pad during braking
Who do you agree with?
Technician A
Technician B
Both
Neither
A vehicle has excessive pedal travel before the brakes apply
Technician A says the master cylinder pushrod is adjusted incorrectly
Technician B says the cause is a faulty residual pressure check valve admitting air
Who do you agree with?
Technician A
Technician B
Both
Neither
With the brakes applied on a vehicle with power brakes, the pedal drops down slightly when the engine is started.
Technician A says the cause could be a leaking power brake booster diaphragm
Technician B says the cause could be a stuck closed residual check valve in the hose from the intake manifold.
Who do you agree with?
Technician A
Technician B
Neither
Both
When performing a vacuum booster function test, start by pumping the brake pedal several times_________________________
With the engine off
With the engine running
With the vacuum hoses removed
While driving the vehicle slowly
On a bearing that has been shock loaded, the race of the bearing is dented. This type of damage is called:
Spalling
Arcing
Brinelling
Fluting
Technician A says a defective wheel bearing will cause a growling or rumbling noise
Technician B says a defective wheel bearing should be loose/cause excessive play in the steering
Who is right?
Technician A
Technician B
Both
Neither
The yellow ABS light is on with the engine running.
Technician A says this could be due to the parking brake not being fully released
Technician B says when this happens, the brakes should operate like non-ABS brakes
Who is correct?
Technician A
Technician B
Neither
Both
