Font size
WorksheetsBrakes Todays Class
Total questions: 21
Worksheet time: 10mins
Front wheel drive vehicles typically have
Front/rear split systems
Diagonally Split systems
Equal numbers of each
Side to Side Split brake systems
Tech A says that brake fade occurs if the brakes create more heat than the can dissipate.
Tech B says that brake fade occurs by a fast dissipation of heat in the brake system that causes glazing on the brake lining
Who is correct?
Tech A
Tech B
Both
Neither
What percentage of the braking force comes from the rear brakes in a typical front wheel drive vehicle
10
30
50
70
Tech A says that if friction is too low, the brakes may require excessive pressure
Tech B says that if the friction is too low, the brakes may be overly sensitive
Who is correct?
Tech A
Tech B
Both
Neither
If a two square inch master cylinder piston moves one inch during braking, how far will it move a four square inch caliper piston?
2 inches
1 inch
1/2 inch
4 inches
The more weight a moving vehicle has, the
more Kinetic Energy if possesses
greater the tire footprint is
less heat is needed to move the vehicle
less stopping power it requires
On vehicles with rear drum brakes and front disc brakes, the metering ensures that drum brakes receive hydraulic pressure
slightly before the disc brakes
slightly after the disc brakes
only during hard stops
only if disc brakes fail
Which of the following statement is true?
the smaller the tire's diameter is, the larger its footprint is
the larger the tire's diameter is. the less braking power is required
the larger the tires diameter is, the smaller its footprint is
The larger the tire's footprint is, the more stopping power can be applied at the tire's contact point with the road
Pressure differential valves are spring-loaded plunger valves that are used to turn on dashboard warning lights if hydraulic pressure is lost in
front brake systems only
rear brake systems only
either front or rear brake systems
wheel cylinders or calipers only
proportioning valves___________?
Prevent the front disc brakes from applying before the rear drum brakes
prevent rear brake lockup during heavy braking
equalize the fluid pressure between the two sides of a diagonally split brake system
equalize the fluid pressure between the two sides of a front/rear split brake system
Front/rear split brake systems are most commonly used on_____
Four Wheel Drive vehicles
Front wheel drive vehicles
Rear wheel drive vehicles
vehicles with large-diameter wheels
Brake Warning lights are what color(s)
Red for service brakes and orange for ABS
Red for service brakes and yellow for ABS
Yellow for service brakes and red for ABS
red for service brakes and red for ABS
In a normally operating brake system, the master cylinder secondary piston is activated by_____________
force from the brake booster pushrod
force from the metering valve
Compensating port pressure
fluid pressure between the primary and secondary piston
Tech A says that a Hydraulic Booster is usually repaired rather than replaced
Tech B says that a hydraulic booster is usually replaced rather than repaired
Who is correct?
Tech A
Tech B
Both
Neither
On drum brake systems the wheel cylinders are always fastened firmly to the
hub
anchor
brake baking plate
wheel well
Tech A says to remove runout, reduce the rotor thickness by one half of the runout measurement
Tech B says if a rotors thickness is less than the minimum thickness specification, machine the rotor until the runout is under .006 in
Tech A
Tech B
Both
Neither
In a drum brake system, the rotational action of the brake shoes activates the self adjuster linkage when the brakes are applied and the vehicle is
Braking in either direction
moving forward
suddenly stopped
in reverse
Tech A says to use heat to help remove a stuck caliper piston
Tech B says to lubricate rusted caliper pistons with clean brake fluid before reinstalling them
tech A
tech B
Both
Neither is correct
A check valve for a vacuum booster holds vacuum pressure and assure power assist capability when
there is a loss of power assisst
there is a loss of brake fluid
there is a low engine vacuum
the master cylinder fails
Annual inspections of brake linings are recommended for all vehicles with more than
20k
40k
60k
100k
What re some advantages of disc brakes over drum brakes
better fade resistance
reduced pullin and grabbing
both are correct
neither
