Resistance to motion between two objects is called
If all the brakes on a vehicle seem to drag, yet all foundation adjustments seem right, a possible cause would be:
When a person releases the brakes on a vehicle (takes their foot off the pedal) the fluid in the brake lines returns to the master cylinder reservoir through the:
What is responsible for causing the pads to move away slightly from the rotors on a disc brake system?
Which item would be faulty if brake fluid were to leak out of the firewall side of the master cylinder?
If a rotor had faulty parallelism what driveability problem may be incurred?
What should be used to clean internal hydraulic brake parts?
With a floating caliper disc brake system, during brake application:
The purpose of the vent port in the master cylinder is to:
Disc type brakes systems:
The purpose of the drum brake backing plate is to:
Technician A says that dust boots on wheel cylinders and caliper pistons keep dirt and water from entering the cylinder. Technician B says that dust boots keep brake fluid from leaking from the cylinder or calipers and contamining the brake linings. Who is correct?
Cup expanders are used in some wheel cylinders to:
The temporary loss of braking efficiency caused by overheating is called:
Master cylinders have an expanding diaphragm seal under the cover of the reservoir. This seal is used to:
Brake fluid that is bled from a brake system should be:
Hydraulically actuated disc brake + caliper systems require:
What type of lubricant should be used when assembling wheel cylinders or master cylinders?
Loose asbestos dust should be removed from the foundation brake mechanism by:
If a petroleum product such as oil is allowed to contaminate brake fluid in a hydraulic brake system, what would be permanently damaged?
If brake fluid containers are left open after use, what will contaminate the fluid?
The process of bleeding of the hydraulic brakes systems refers to:
When brake drums have been measured, and found at the maximum limit specified by vehicle manufacturer, the brake drum should be:
Brake linings that are contaminated and soaked with gear oil:
If brake fluid is splashed into a person''s eyes, the first thing to do is:
When installing servo type brake shoes, the primary shoe should be placed on the backing plate:
A vehicle with hydraulic brakes with a complaint that all four wheels seem to experience brake drag after their application. On the hoist, you find the shoe adjustment seems OK. A possible cause is:
If a brake pedal rises and falls or pulsates and the steering wheel shifts slightly left and right when brakes are applied, one probable cause may be:
Consistant brake pedal pulsation in a drum brakes system may be caused by:
Intermittant pedal pulsation may also be caused by:
air in the system
Overheating a brake drum results in abnormal thermal expansion, which can cause:
A disc-brake rotor should be checked for run-out, which should not exceed limits specified in the appropriate service manual. Excessive rotor run-out will result in:
The normal procedure when turning drums is to start at the
The dash brake warning light in a brake system which uses a dual master cylinder, operates:
The need for brake adjustment is generally indicated by:
Air trapped in the hydraulic system can be detected by:
Serious damage, brake failure and leaks may result if the rubber seals of a hydraulic brake system owing to the presence of:
A vehicle owner states that brake fluid is leaking from behind the brake pedal and dripping on the carpet. The most probable cause of this problem is a defective:
A customer complains that his disc brake equipped vehicle seems to pull or drift to the right after he applies and releases the brakes and tries to drive on. Which of the following might cause the problem?
The diameter on a driveline parking brake drum is greater at the center than at both edges of the friction surface. Which of these faults describes this description?
A truck with hydraulic disc/drum brakes makes severe hard brake applications and experiences brake fade, but does not experience brake fade on repetitive light brake applications. Technician A says this could be caused by an improperly adjusted proportioning valve. Technician B says brake drums worn or machined beyond the maximum diameter could cause this condition. Who is right?
You are inspecting for certification, a truck equipped with hydraulic disc brakes. Technician A says you must remove the wheels, in most cases, to properly observe and measure pad thicknesses or damage. Technician B says if the brakes were applied shortly before measuring the lining or rotor thicknesses, the actual sizes will be larger than recorded on the worksheets. Who is right?
Cable-actuated parking brake systems are commonly found in:
Technician A says that it is friction built up in or on the drum/rotor that causes a vehicle''s forward motion to stop. Technician B says it is the friction of the tires to the road that actually stop a vehicle''s motion. Who is right?
A truck with a hydraulic braking system is being overhauled. Technician A uses a vacuum gauge to test master cylinder output. Technician B says that all the wheel cylinders must be inspected, reconditioned or replaced when an overhaul is being performed. Who is right?
Technician A says that a hydraulic disc brake caliper can have two pistons. Technician B says that a hydraulic disc brake caliper can have one, two or four pistons. Who is right?
Hydraulic single piston disc brake systems are said to have:
Technician A says that on brakes with vented rotors, the inboard pad could be thicker than the outboard pad. Technician B says that on brakes with solid rotors, the inboard and outboard pads could be the same thickness. Who is right?
What is the difference between a fixed caliper and a sliding caliper?
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