questions and answers5
Service Brakes - ANSWERS-Normal use
Stab braking - ANSWERS-Braking as hard as you can and releasing. Repeat until desired speed is
met. Used when slowing down very quickly
Wedge Brakes - ANSWERS-The brake chamber push rod pushes a wedge directly between the
ends of two brake shoes.
Low Air Pressure Warning - ANSWERS-Cuts on at 55 PSI. On larger buses it is common for it to
come on at 80-85 PSI
At what PSI will Spring Brakes become fully on - ANSWERS-Spring brakes will come on if the air
pressure drops to a range of 20 to 45 PSI (typically 20 to 30 PSI)
A dual air brake system. - ANSWERS-Has two separate air brake systems which use a single set
of controls. Each system has its own air tanks, hoses, lines.
How many steps should you use to inspect your Air Brakes - ANSWERS-7 steps
At 55 mph approximately how many seconds does it take to come to a stop - ANSWERS-6
seconds
What is the minimum tread depth required in the front two tires - ANSWERS-4/32" tread depth
required in the front two tires
, There must be no more than ________ play in the steering wheel or __" in a 20" steering wheel
- ANSWERS-10 degrees/ 2"
What is the minimum tread depth required in the rear tires? - ANSWERS-2/32" tread depth
required in the rear tires
How do you test your air breaks - ANSWERS-Pump 3 times and then hold the break on the 4th
What are the only factors in BAC - ANSWERS-Amount of alcohol and weight
How do you calculate stopping distance? - ANSWERS-Perception time + reaction time + braking
distance = stopping distance
There must be no more than ___" play in any engine belts - ANSWERS-3/4" play in engine belts
If ABS fails - ANSWERS-Do not stop immediately, service soon
Oil pressure should be between ____psi at idle - ANSWERS-5-20 psi
Oil pressure should be between ____psi during operation - ANSWERS-35-75
How many seconds ahead should you look while driving - ANSWERS-Always look 10-12 seconds
ahead while driving
What do round yellow warning signs for RR XING without drop arms mean? - ANSWERS-You
must stop and listen before crossing