• 189-17 Jamaica Avenue Hollis NY 11423
  • 105-24 Cross Bay Blvd, Jamaica, NY 11417
  • TEL:718-217-4444
THIS SCHOOL IS LICENSED BY THE STATE OF NEW YORK.

AIR BRAKES

CAR LICENSE

CAR QUIZ 1-18

COMBINATION

DOUBLES/TRIPlES

GENERAL KNOWLEDGE

HAZARDOUS MATERIAL

PASSENGER

TANKER

Tanker Test 1
1.
Between 60 and 80 psi
At normal pressure
Bled down to half the maximum pressure

1.
It will be raised slightly when the tractor is backed under it.
The kingpin is about 1 1/4 inches above the fifth wheel.
The end of the kingpin is even with the top of the fifth wheel.

1.
The base
The shank
The head

1.
About 12 degrees off the line of the trailer.
The kingpin to engage the driver's side locking jaw first.
Directly in front of the trailer.

1.
Pull gently forward in low gear against the locked trailer brakes, then look at it carefully.
Put the tractor in gear and pull ahead with a sharp jerk.
Rock the trailer back and forth with the trailer brakes locked.

1.
To park at loading docks
Never
To park on a grade

1.
Pushing in the trailer air supply valve.
Pulling out the trailer air supply valve.
Connecting the service line glad hand.

1.
To reduce heat and noise
To prevent steering problems
To ensure good electrical connections

1.
Applying and releasing the trailer brakes and listening for brake sounds.
Lifting the brake pedal.
Turning on the parking brakes from the cab.

1.
Make sure that the brakes are properly adjusted.
Keep the fifth wheel's free play as tight as possible.
Go slowly around turns.

1.
Air brakes are off.
Tractor protection valve is normal.
Trailer brakes are locked.

1.
Nothing is likely to happen until you try to apply the brakes.
The trailer's air tank will exhaust through the open line.
The emergency tractor brakes will come on.

1.
2
3
4

1.
It results in less skidding than using the brake pedal alone.
It should not be done.
It is the best way to brake and keep the truck in a straight line.

1.
If the trailer has no spring brakes, you can drive away, but you will not have trailer brakes.
The brake pedal will work the trailer spring brakes instead of the air brakes.
The hand valve will apply the tractor brakes instead of the trailer brakes.

1.
The connected brake circuit becomes a back up air tank.
If you did not, you could never build system pressure.
It will keep dirt and water out of the lines.

1.
Under the locking lever
Over the locking lever
Through the locking lever

1.
There is enough clearance between the tractor frame and the landing gear.
There is enough clearance between the tops of the tractor tires and the nose of the trailer.
Both a and b are correct.

1.
Trailer tank pressure to be lost.
Trailer emergency brakes to come on.
Tractor spring brakes to lock on.

1.
Trailer will be lifted slightly when the tractor backs under it.
End of the kingpin is even with the top of the fifth wheel.
Trailer landing gear is fully extended.

1.
The emergency and service air lines.
The electrical service cable.
Nothing, back up and lock the fifth wheel.

1.
Three turns off the top with the crank handle secured in it's bracket.
Fully raised with the crank handle secured in its bracket.
Raised 1/2 way with the crank handle removed.

1.
Red, blue
Blue, red
Black, yellow

1.
Light vehicles need more braking power to stop than heavy ones.
Always delay braking a heavy vehicle until you have no other choice.
"bobtail" tractors can take longer to stop than a combination vehicle loaded to the maximum gross weight.

1.
Make sure that the trailer brakes are off.
Supply air to the trailer system, then pull out the air supply knob to lock the trailer brakes.
Apply the brakes twice to alert others.

1.
To test the trailer brakes.
Only when the trailer is fully loaded.
Only with the foot brake.

1.
1
2
3

1.
You can set the fifth wheel for weight balance.
The coupling is not right and should be fixed before driving the vehicle.
The parking lock is off and you may drive away.

1.
The trailer supply valve to stay open.
The tractor to lose all air pressure.
The tractor protection valve to close.

1.
Often do not have spring brakes.
Usually need a glad hand converter.
Are easier to brake because they are heavier.