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FREE AND STUDY GAMES ABOUT METRO AIR BRAKE TEST
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -48 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: 1. Verify parking brake is released, engine off, electrical power on.**
Answer:
Emergency Spring Brake Question 2: 2. Verify Transmission is in drive, release parking brake, drive forward no more than
5 MPH.
Answer:
Service Brake Question 3: WHY: This test is to verify the brake system has no air leaks, must be at Cut- Out
(IDENTIFY CUT-OUT)
Answer:
Applied Air Leakage Question 4: 3. Low air pressure warning signal should activate no lower than 55 PSI.
Answer:
Low Pressure Warning Signal
Question 5: 3. IDENTIFY AT WHAT PSI THE NEEDLE CUTS-OUT. (Needle stopped moving)
Answer:
Air Governor Cut-Out Question 6: NOTE: If the needle does not move to the right, apply brake pedal again, and repeat process if necessary. Air compressor must Cut-In no lower than 85 PSI Minimum.
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Air Governor Cut-In Question 7: WHY: This test is to verify the brake system has no air leaks
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Static Air Leakage Question 8: 4. Air loss should not exceed more than 2 PSI in 1 Minute, IDENTIFY ANY AIR LOSS.
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Static Air Leakage Question 9: WHY: This test is to verify the air pressure builds from 85 PSI to 100 PSI within 45 seconds.
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Air Pressure Build Up Question 10: 1. With the parking brake applied, transmission in neutral, start engine. (SAFE
START)
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Air Governor Cut-Out Question 11: 2. Turn engine off, electrical power on, cover service brake without foot pressure.
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Static Air Leakage Question 12: 2. Turn engine off, electrical power on, firmly apply pressure to service brake.
Answer:
Applied Air Leakage
Question 13: WHY: This test is to verify the service brake works properly. Must demonstrate safely.
Answer:
Service Brake
Question 14: 1. System at normal operating range, apply service brake.
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Service Brake Question 15: WHY: This test is verify the air governor stops building air pressure AT A
MAXIMUM OF 140 PSI
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Air Governor Cut-Out Question 16: NOTE: If bus is already running, lower air pressure to 90 PSI, then build air pressure to air governor cut-out
Answer:
Air Governor Cut-Out Question 17: WHY: This test is to verify emergency/Spring brake will pop in the event of an air leak.
Answer:
Emergency Spring Brake
Question 18: 3. IDENTIFY AT WHAT PSI THE NEEDLE CUTS-IN. (Needle starts moving)
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Air Governor Cut-In Question 19: WHY: The test is to verify the rear door interlock is functioning properly
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Rear Door Interlock Question 20: 1. With air governor at cut-out, apply brake pedal one time (pause 5 to 10 seconds between PUMPS)
Answer:
Air Governor Cut-In
Question 21: 2. IDENTIFY THE AIR PRESSURE BUILDS FROM 85 PSI to 100 PSI within 45 Seconds
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Air Pressure Build Up Question 22: WHY: This test is to verify the low air warning light and/or audible alarm will activate.
Answer:
Low Pressure Warning Signal
Question 23: 3. The bus should not move or accelerate.
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Rear Door Interlock Question 24: NOTE: Document any unusual feel or delayed stopping action.
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Service Brake Question 25: NOTE: Acceleration will not be used for this test
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Air Pressure Build Up Question 26: 3. Spring brake should pop up at approximately 40 PSI(IDENTIFY where pop up occurs)
Answer:
Emergency Spring Brake
Question 27: 2. Pump service brake to lower air pressure.**
Answer:
Emergency Spring Brake Question 28: 2.Verify transmission is in drive, apply slight acceleration, engine should accelerate.
Answer:
Parking Brake