Which is the proper procedure for checking hydraulic brakes?

• Pump the brake three times and watch the hydraulic pressure gauge to make sure it's building pressure
• All these are correct
• Hold the brake pedal down. Make sure the pedal slowly moves all the way to the floor within 10 seconds
• Pump the brake pedal three times and then hold it down for five seconds. The brake pedal should not move (depress) during the five seconds.

When doing a pre-trip inspection of the power steering, play in the steering wheel should not exceed how much?

• 20 degrees (or about 4 inches on a 20-inch wheel) before the front left wheel barely moves.
• There should be zero degrees of play in the steering wheel
• 30 degrees (or about 6 inches on a 20-inch wheel) before the front left wheel barely moves.
• 10 degrees (or about 2 inches on a 20-inch wheel) before the front left wheel barely moves.

When doing a pre-trip inspection, what should you check on the battery box?

• Battery box and cover or door must be secure
• All these are correct
• Battery connections should not show signs of excessive corrosion
• Battery(s) are secure, connections are tight and cell caps are present

When doing an emergency system check on air brake systems, how do you begin the test?

• Turn off the electrical power and begin fanning off the air pressure by pulling out the red parking brake knob
• Turn electrical power off and begin fanning off the air pressure by rapidly applying and releasing the foot brake
• Turn electrical power on and begin fanning off the air pressure by rapidly applying and releasing the foot brake
• Turn the engine on and begin fanning off the air pressure by rapidly applying and releasing the foot brake

When doing an emergency system check on air brake systems, the tractor parking valve and the trailer parking valve should close (pop out) when the pressure gets below what reading?

• 10-30 psi
• 60-80 psi
• 80 - 100 psi
• 20-45 psi

What should you check for on drum brakes during a pre-trip inspection?

• Check for cracks, dents or holes. Also check for loose or missing bolts.
• Check for contaminates, such as debris or oil/grease.
• Brake linings (where visible) should not be worn dangerously thin.
• All these are correct

When inspecting the air and electrical connections to the trailer, which of the following items does NOT need to be checked?

• Make sure glad hands are locked in place, free of damage and oil/grease that can cause air leaks.
• Make sure the brake fluid lines are properly attached and not leaking
• Make sure the trailer electrical plug is firmly seated and locked in place.
• Check that trailer air connectors are sealed and in good condition.

Describe the proper service brake check:

• All of these are correct
• Pull forward at 5 mph, apply the emergency brake and stop. Check to see that the vehicle does not pull to either side and that it stops when the emergency brake is applied
• While sitting still, release the parking brake and pump the service brake 5 times, then release it. Make sure the pressure does not drop more than 3 psi in one minute
• Pull forward at 5 mph, apply the service brake and stop. Check to see that the vehicle does not pull to either side and that it stops when the brake is applied

When checking the steering box components under the hood, what should you check for?

• All these are correct
• Check that the steering box is securely mounted and not leaking
• Look for any missing nuts, bolts and cotter keys
• Check for power steering fluid leaks or damage to power steering hoses

When doing a pre-trip inspection, how much of a gap should there be between the 5th wheel and the trailer?

• 1 inch
• 1/4 inch
• No gap
• No less than 2 inches

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