Brake hydraulic - Study guides, Class notes & Summaries

Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive wheel? Sealed non-serviceable to test a vacuum power brake booster in the vehicle, you should pump the brake pedal at least 4 times, hold the brake pedal depressed, and start the engine. the brake pedal should: drop slightly and remain firm You are installing a set of brake shoe linings that are not the same length. Traditionally, the primary shoe lining is: Smaller and goes towards the f...

CDL Study Guide ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct 1. What is the most important reason for doing a vehicle inspection? Answer: Safety.Safety for yourself and other road user. 2. What thingsshould you check during a trip? Answer: Watch gauges, mirrors, use yoursenses to check for problems. Look, listen, and smell. Check critical items when you stop; tires, wheels, and rims ; brakes, lights and reflectors; brake and electricalconnections to trailer. trai...

Brake test questions and answers Graded A+ 1) Why must air tanks be drained? a) For pre trip inspection purposes b) To check for leaks c) To release oil and water buildup d) To activate the low air pressure alarm c) To release oil and water buildup 2) What is a supply pressure gauge used for? a) To check tire pressure b) To check tank pressure c) To activate the low pressure alarm d) To check for leaks b) To check tank pressure 4) What are spring brakes? a) Hydraulic brakes...

NC CDL Air Brakes Questions and Answers Already Passed Oil and water usually collect in compressed air tanks. If you do not have an automatic tank drain, when should you drain the air tanks? After every working day Why drain water from the compressed air tanks? Water can freeze in cold weather and cause brake failure. The air brake system for a straight truck or bus should not leak at a rate of more than ___ PSI per minute with the engine off and the brakes released. 2 To make ...

In a single anchor bendix drum type rear brake the secondary lining is longer than the primary Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining area is: smaller and goes toward the front of the car During a brake overhaul, you notice that the brake fluid seems to be very dirty and dark in color. What should you do? flush the system before the new parts are installed In order to bleed the system on a vehicle equipped with power brakes: N...

Texas CDL - Air Brake Test Questions and Answers Graded A+ Oil and water usually collect in compressed air tanks. If you do not have an automatic tank drain, when should you drain the air tanks? After working every day. Why drain water from the compressed air tanks? Water can freeze in cold weather and cause brake failure. The air brake system for a straight truck or bus should not leak at a rate of more than __________ psi per minute with the engine off and the brakes released. 2...

Technician observes that the brake fluid level is at the "Min" mark in the master cylinder reservoir. Tech A says that worn front pads could be the cause. Tech B says that a leak in the brake hydraulic system could be the cause. Who is right? - ANSWER ☑☑Both A and B The tires of a vehicle are being rotated and balanced. Tech A says that the wheel weight retaining clips must be matched to the rim profile. Tech B says that directional tires are rotated in a criss-cross pattern. Who is ri...

Texas CDL Air Brakes Questions and Answers Already Passed Air brake systems combine what three different systems? Service brakes, parking brakes and emergency brakes. When should you drain the air tanks? After every working day. Why drain water from the compressed air tanks? Water can freeze in cold weather and cause brake failure. Air brake equipped vehicles must have: A supply pressure gauge and warning signal when psi drops below 60. What can legally hold a parking or eme...

Brake drum machined beyond its limit Which of the following conditions can cause brake fade? a. Seized wheel cylinder piston b. Brake drum machined beyond its limit c. Leakage past the master cylinder cups d. Air in the hydraulic system Neither Technician A nor B With the brakes applied on a vehicle with power brakes, the pedal moves down slightly when the engine is started. Technician A says the cause could be a leaking power brake booster diaphragm. Technician B sa...

Normal hydraulic system pressure is: A. Between 2500 psi-2800 psi B. 3000 PSI C. 3200 PSI D. PSI B The PTU uses hYD 1 system power to provide HYD 2 system pressure. T/F True During takeoff and landing with the PTU switch in the AUTO position, with the flaps out of zero, the PTU: A. Keeps system 2 fluid levels at a constant level to prevent system failure B. Is activated by system logic if engine one fails or engine one EDP fails C. Is activated by system logic upon parking b...