Ontario Z Endorsement Knowledge Exam (Air Brake) -01 1 / 20 What is a caging bolt used for? To protect the air lines To give more power to the brake chamber To disable the brake chamber To adjust the brakes 2 / 20 When uncoupling, trailer supply valve must be ______ Pulled out None of these Removed Pushed in 3 / 20 What do you check while inspecting brake drums? Date of expiry Crakes and Holes Rust Moisture 4 / 20 What things you check while testing Air Brake chambers? All of the above Cracks Slack adjustment Holes 5 / 20 Maximum governor cut out is ____ PSI. 100 130 145 120 6 / 20 Who can repair the Automatic Slack Adjusters? Certified Technician Owner Operator Safety Manager Driver 7 / 20 _________ brake system doesn't have pushrod. Hydraulic brakes Drum Brake None of these Wedge brakes 8 / 20 On which part of the brake system 'Brake linings' are attached? Rotors S Cam Brake chambers Brake shoes 9 / 20 If your truck is equipped with manual slack adjusters, readjustment can be done by Anyone Safety manager Certified Technician Truck driver 10 / 20 ______ in the brake system causes brake linings contamination. Grease and oil Air Water None 11 / 20 When air pressure reaches _____ PSI to ____ PSI lower than the cut out pressure, governor must cut in. 15, 25 22, 25 30, 35 40, 60 12 / 20 Which vehicles have mostly DD3 Safety Actuators? Trucks Cars Buses Bikes 13 / 20 When air pressure drop to ____ PSI, spring brakes will start to apply. 60 35 90 55 14 / 20 Which type of brake system has "S" Cam? All brakes systems Disc brakes Drum brakes None 15 / 20 The brake pedal should be ______, while measuring the pushrod stroke. fully pressed partially pressed any of these not pressed 16 / 20 The most common brake chamber size is ______. 20 30 36 24 17 / 20 Where you can find the safety valve? Air Tank On the dashboard Brake chamber S Cam 18 / 20 What can different size chambers on same axle cause? No braking Imbalanced braking All of these low mpg 19 / 20 What is the use of the Spring Brakes? To prevent from skidding To stop at the traffic light for parking and an emergency. None 20 / 20 What is the function of the governor in air brake system? apply the brakes keep the engine cool regulate air pressure remove the moisture Your score is 0% Restart quiz
