What are spring brakes - Study guides, Class notes & Summaries

What is the most important reason for doing a vehicle inspection? - CORRECT ANSWER-Safety. Safety for yourself and other road user. What things should you check during a trip? - CORRECT ANSWER-Watch gauges, mirrors, and use your senses to check for problems...LOOK, LISTEN, AND SMELL. Name some key steering system parts. - CORRECT ANSWER-steering wheel, tie rod, steering shaft, hydraulic fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm, power steerin...

AIR BRAKES TEST QUESTIONS AND ANSWERS ALREADY PASSED 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...

HEAVY TRUCK BRAKES MICHIGAN MECHANIC STUDY GUIDE RATED A+ AN ENGINE BRAKE (JACOBS BRAKE) A. IS A SELF-ENERGIZING SERVO TYPE. B. IS NORMALLY USED IN PLACE OF A SPRING BRAKE. C. RESTRICTS THE INTAKE PORT AND CAUSES A BUILD UP OF 30-45 LBS OF PRESSURE. D. OPENS THE EXHAUST VALVES NEAR THE TOP OF THE COMPRESSION STROKE TO RELEASE THE COMPRESSED AIR. (CORRECT AWNSER) IN THE SYSTEM SHOWN BELOW, THE PART AT C IS: A. AN INVERSION VALVE. (POSSIBLE CORRECT AWNSER) B. A SAFETY VALVE. C. A ...

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 ...

CDL AIR BRAKES QUESTIONS AND ANSWERS ALREADY PASSED When your vehicle is empty, start braking: Sooner than when loaded Modern air brake systems combine three different systems. They are the service brakes, the parking brakes and the : Emergency brake What does the air compressor governor do? It controls when air is pumped into the air tanks Oil and water that collects in air tanks can make brakes fail. If you do not have automatic tank drains, when should you drain the air tanks? ...

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...

What is the function of a vortex generator? - It is designed to delay of prevent separation of the boundary layer. What are the three axes of an airplane? - Longitudinal, lateral, and vertical. What are the three primary flight controls of an aircraft? - The ailerons, elevators, and rudder. Name several secondary flight controls and describe their general purpose? - Secondary flight controls consist of various types of trim tabs such as balance tabs, anti-servo and servo tabs, and spring t...

You supply air to the trailer tanks by: 1. Pushing in the trailer air supply valve 2.Pulling out the trailer air supply valve 3. Connecting the service line gland hand - correct answers 1.Pushing in the trailer air supply valve. A driver crosses the air lines when hooking up to an old trailer with no spring brakes. What will happen? 1. The Hand valve will apply the tractor brakes not the trailer brakes 2. The brake pedal will work the trailer spring breaks not the trailer breaks. ...

You supply air to the trailer tanks by: 1. Pushing in the trailer air supply valve 2.Pulling out the trailer air supply valve 3. Connecting the service line gland hand - correct answers 1.Pushing in the trailer air supply valve. A driver crosses the air lines when hooking up to an old trailer with no spring brakes. What will happen? 1. The Hand valve will apply the tractor brakes not the trailer brakes 2. The brake pedal will work the trailer spring breaks not the trailer breaks. ...

AN ENGINE BRAKE (JACOBS BRAKE) A. IS A SELF-ENERGIZING SERVO TYPE. B. IS NORMALLY USED IN PLACE OF A SPRING BRAKE. C. RESTRICTS THE INTAKE PORT AND CAUSES A BUILD UP OF 30-45 LBS OF PRESSURE. D. OPENS THE EXHAUST VALVES NEAR THE TOP OF THE COMPRESSION STROKE TO RELEASE THE COMPRESSED AIR. (CORRECT AWNSER) IN THE SYSTEM SHOWN BELOW, THE PART AT C IS: A. AN INVERSION VALVE. (POSSIBLE CORRECT AWNSER) B. A SAFETY VALVE. C. A MODULATOR VALVE. (NOT CORRECT AWNSER) D. A RELAY VALVE. ...