Pre-Trip: Air Brake Check

Before the Air Brake Check (Step 1), what steps should you do BUT not say out loud?

• Check that the parking brake is engaged

• Sit down and put on seat belt

• Close the door

• Cover accelerator with foot the entire test

• Cover the service brake with foot the entire test

Answer explanation

1. 1. DO NOT VERBALIZE THIS SECTION BUT COMPLETE THE STEPS:
   * Check to make sure the parking brake is engaged and gear is in neutral

• * Sit down in seat and put on seatbelt

• * Close door: Cover the service brake with foot the entire test.

• * Verbally inform the examiner of each step starting with The Air Brake Check onwards
  
  Source: MVC Requirements for CDL-B - page # 1 - Section 1

What is the first step in the pre-trip inspection?

• Air Brake Check

• Tug Test (Parking & Service Brake Checks)

• Steering Axle

• Front of Vehicle/Engine Area

Answer explanation

The answer is on the picture

Source: Class B Passenger Bus Pre-trip Checklist - page 1

Make sure to put the steps in the right order:
After checking that bus is secured and saying "I am going to do my Air Brake Check" what is the order of the steps?
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• Keep pumping service brakes for 60:40. At ~60 psi - The Low Air Warning light and buzzer turns on. At ~40 psi, The spring brake should pop up. Then restart bus and build air to governor cutoff.

• Start bus and build Air Pressure to 120-140psi at governor cut off (hiss/sneeze)

• Turn Master Switch to lights, ABS lights goes on/off meaning ABS works!

• Turn Master Switch to off (turn engine off) > Turn Master Switch to lights

• Check for Air Leaks by applying service brake + releasing parking brake. Wait 1 minute, Bus should not lose > 3 PSI of Air Pressure.

Answer explanation

Note: The answer on the source below

Additional Source: MVC Requirements for CDL-B - page 1

After completing the Air Brake check (step 1), What is the next step?

• Service Park Check

• Parking Brake Check

• Driver Compartment Inspection (Horn, Windshield, Traffic Monitoring Devices, Wipers, Washers, Heaters & Defrosters, Lighting Indicators, Emergency Equipment)

• Passenger Entry & Lift

Answer explanation

Fun Fact: While you are restarting your bus + re-building air to 120 - 140 psi after your spring brake pops (~40 psi), You can ask your DMV examiner to do a "Driver Compartment Inspection".

This means you can do steps #4 - 9 (Horns, Windshield, Mirrors/Cameras, Wipers, Washers, Heaters & Defrosters, Emergency Equipment, and Lighting Indicators).

While doing the Air Brakes Check, what is something you should NEVER touch?

(a)  

Answer explanation

WARNING: If you touch the parking brake during the Air Brakes Check or forget a step in the Air Brake Check, It's an auto-fail.

In the Air Brakes Check, 60:40 means?

• At 60 PSI, low air lights and buzzer turns on and at 40 PSI, spring brake pops.

• At 60 PSI, spring brake pops and at 40 PSI, low air lights and buzzer turns on.

• 60 + 40 = 100 Air Pressure, right?

Answer explanation