pg. 1 CDX Brakes Final Test 2025 With 150 Practice Questions and Correct Answers| CDX Automotive Brakes Technician Certification Exam 2025 Prep Qs with Accurate Answers (New!)
Which of the following is used on heavy vehicles and is commonly called air brake?Air operated braking system Which of these is a simple mechanical system that uses leverage to force a friction block against one or more wheels?Scrub brake Tech A says that if a technician performs a faulty brake job on a vehicle, he or she cannot be held liable. Tech B says that technicians can be held liable for improperly repaired brakes. Who is correct?Tech B Tech A says that technicians have been successfully sued for improper brake repairs, resulting in large cash settlements. Tech B says that to reduce liability, good technicians create processes to help ensure steps of the job are not forgotten.Who is correct?Both A and B Tech A says that an antilock brake system (ABS) allows the front wheels to be steered during a panic stop. Tech B says that ABS sensors apply or release hydraulic pressure to the wheel brake units during ABS brake events. Who is correct?Tech A A substantial leak in the _____ will prevent enough pressure from building to exert the necessary braking force.Hydraulic system A _____ transfers hydraulic fluid through lines and hoses to the wheel brake units. 1 / 3
pg. 2 Master cylinder If 100 psi of working pressure is applied to a 2 square inch output piston, how much force will be created?200 lb If the brake pedal is squishy (soft or spongy), there is a good chance that the hydraulic braking system has _____ in it and needs to be bled.Air Tech A says that hydraulic pressure is applied equally in all directions throughout a closed system. Tech B says that air in the hydraulic system will cause the brake pedal to be spongy. Who is correct?Both A and B
All of the following are properties of DOT 3 and DOT 4 brake fluid, EXCEPT:
it is not harmful to painted surfaces.
Banjo fittings are made up of all of the following components, EXCEPT:
banjo nut.Brake hoses include a tough, flexible _____ designed to resist abrasion and damage.Outer housing jacket Brake hoses should never be?All of the above
Disc brake systems that are equipped with low-drag brake calipers use:
quick take-up master cylinders.Standard brake fluid is hygroscopic, which means it _____.Readily absorbs water Tech A says that the secondary piston in a master cylinder is operated by hydraulic force. Tech B says that the brake pedal return spring returns the master cylinder pistons to their original position. Who is correct?Tech A 2 / 3
pg. 3 The primary brake circuit fails due to a leak in the lines. Technician A says that the driver will notice a lower than normal brake pedal and reduced braking power.Technician B says that the brake pedal will "grab" higher than normal. Who is correct?Technician A True or False. Many brake hoses use banjo fittings to connect the hose to the wheel unit.True True or False. To ensure that a leak in one brake circuit will not affect the other circuit, master cylinder reservoirs have two separate chambers.True
A brake system metering valve:
is used to hold off the application of the front brakes on vehicles with rear drum brakes.
All of the following are parts of the hydraulic brake system, EXCEPT:
parking brake assembly.As the vehicle is _____, the chassis squats on the rear suspension and the lever is moved, applying more force on the load-sensitive proportioning valve.Loaded Tech A says that hydraulic braking systems use proportioning valves and metering valves. Tech B says that hydraulic braking systems use pressure differential valves, or anti-lock hydraulic control units to modify hydraulic pressure. Who is correct?Both A and B Tech A says that the metering valve controls pressure to the rear brakes. Tech B says that the proportioning valve controls pressure to the front brakes. Who is correct?Neither A nor B Technician A says that the pressure differential switch may need to be re-centered after bleeding the brakes. Technician B says that there are several types of pressure
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