In-Cab Pre-Trip Inspection: Safe Start & Brake Test
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Questions and Answers

During the in-cab pre-trip inspection, what indicates that a fire extinguisher is properly filled?

  • The extinguisher is free of dust and debris.
  • The pin is securely in place and shows no signs of tampering.
  • The extinguisher is mounted next to the passenger seat.
  • The needle is in the green zone on the pressure gauge. (correct)

It is acceptable to have minor cracks on the reflective triangles, as long as they can still stand on their own when assembled.

False (B)

Besides the driver's side and behind the passenger seat, name one thing that needs to be checked on the fire extinguishers during the in-cab inspection.

properly mounted and secured, not cracked, bent or damaged, no illegal holes or welds, not leaking, filled to the proper level (the needle is in the green), pin is in place, no missing hardware

During the windshield wiper check, they should be tight and ______ to the windshield.

<p>flush</p> Signup and view all the answers

Match each item with its inspection criteria:

<p>Mirrors = Clean, clear, free of debris, no illegal stickers, adjusted to driver Windshield = Not cracked, chipped, or damaged, clean and free of debris Wiper Blades = Not cut, torn, or frayed, tight and flush to the windshield Reflective Triangles = Proper color, clean, clear, free of debris, no missing hardware</p> Signup and view all the answers

What should the driver do while the examiner is inspecting the front of the truck during the pre-trip inspection?

<p>Point up for top marker lights. (B)</p> Signup and view all the answers

Checking the oil pressure, air pressure and water temperature is part of the outside PTI.

<p>False (B)</p> Signup and view all the answers

Name two of the gauges read by the driver during an in-cab pre-trip inspection:

<p>Oil pressure, Air pressure, Water temperature</p> Signup and view all the answers

During the in-cab inspection, what should you check regarding the seat belt?

<p>Proper mounting and security, cuts, tears, or fraying, and that it locks, holds, and unlocks properly. (D)</p> Signup and view all the answers

During the 'safe start' procedure, the ABS and DEF lights should illuminate when the key is turned to the ON position.

<p>True (A)</p> Signup and view all the answers

During the air governor shut off test, what action do you take to drop the air pressure below 100 psi?

<p>Use the service brake</p> Signup and view all the answers

During the applied brake test, after pushing the spring brakes, you should press the ______ as hard as you can.

<p>service brake</p> Signup and view all the answers

What is the maximum allowable air pressure loss during the one-minute applied brake test?

<p>4 psi (A)</p> Signup and view all the answers

During the low air pressure warning test, the warning light or buzzer should activate at 40 psi or above.

<p>False (B)</p> Signup and view all the answers

During the spring brake test, within what range of air pressure (in psi) should the spring brakes automatically engage?

<p>45-20 psi</p> Signup and view all the answers

In the tug test, what should happen when you gently press the accelerator while the truck is in drive and the parking brake is engaged?

<p>The truck should not move. (C)</p> Signup and view all the answers

Flashcards

Seat Belt Inspection

Properly mounted and secured with no cuts, tears, or fraying. Locks, holds, and unlocks properly. All bolts present and tight.

Spare fuses and light bulbs

Spare fuses and light bulbs are present and accessible.

Safe Start: ABS & DEF Lights

Turn the key to the ON position and verify that the ABS and DEF lights illuminate, including the ABS light on the back of the trailer.

Fire Extinguishers

Two fire extinguishers are properly mounted, secured, filled, and have intact pins.

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Air Governor Shut Off Test

Use the service brake to drop the air pressure below 100 psi, then build pressure to 120-140 psi by revving the engine between 1000-1500 RPM until the air governor shuts off.

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Reflective Triangles

Three reflective triangles are present, clean, and in good condition.

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Applied Brake Test (Air Loss)

After turning the truck off, with the key in the ON position, push the spring brakes. Wait for the hissing to stop, then press the service brake as hard as you can. After one minute, ensure you lose no more than 4 psi.

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Mirrors

Six mirrors are properly mounted, clean, and adjusted for the driver.

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Windshield Condition

Windshield is properly mounted, clean, and free of damage or obstructions.

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Low Air Pressure Warning Test

Press the service brakes until a low air warning light or buzzer sounds at 55 psi or above.

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Spring Brake Test (Automatic)

Continue lowering air pressure until the spring brakes automatically engage between 45 and 20 psi.

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Wiper Arms

Wiper arms are secure and undamaged.

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Wiper Blades

Wiper blades are intact and make full contact with the windshield.

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Tractor Brake Test

With trailer supply pushed in and parking brake released, put the truck in drive and gently press the accelerator,truck should not move.

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Gauges and Horns

Gauges functioning properly, levels audible, and horn working.

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Service Brake and Alignment Test

Push both spring brakes in, accelerate truck forward to about 5 mph, hands off of the steering wheel. Steering wheel should not move and service brakes should work.

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Study Notes

  • Performs the In-Cab portion of the Pre Trip Inspection

Safe Start

  • Seat belt must be properly mounted and secured, no cuts, tears or fraying, locks, holds, unlocks properly, all bolts must be present and tight
  • "I am going to do a safe start.” should be stated.
  • Turn key to ON position.
  • State "I see the ABS lights turn on, I see the DEF lights turn on, ABS light on the back of the trailer.”
  • Start the truck, turn and hold key until it fully starts, then proceed with G.A.L.S.T.S.
  • Check for the air governor shut off.
  • Followed by "I will use the service break to drop the air pressure below 100 psi, then build pressure to 120-140 psi by revving engine between 10-15 RPMs until you hear air governor shut off. My air governor shut off at _____ psi."

Applied Break Test

  • Announce "I will now do the Applied break test.”
  • Turn truck off.
  • Turn key to ON position for safe start.
  • Push the spring brakes.
  • Wait for the hissing to stop, then press the service brake as hard as you can.
  • Wait for gauge to stop moving.
  • Start the timer for one minute, ensure you lose no more than 4 psi.
  • Confirm with instructor that at least one minute has elapsed.
  • DO NOT release the service brake AT ALL until you have confirmation from instructor.

Low Air Pressure Warning Test

  • Announce "I will now do low air pressure warning test.”
  • Press the service brakes until a low air warning light or buzzer sounds at 55 psi or above.

Spring Brake Test

  • Announce "I will now perform the spring brake test.”
  • Followed by "I am going to keep lowering my air pressure until my spring brakes automatically pop at 45-20 psi.”

Tug Test

  • Announce, "I will now perform a tug test.”
  • Turn truck back on and rebuild air pressure to about 100 psi:
  • Test trailer supply - push parking brake + put truck in drive + gently press on the accelerator (should not move) = trailer brake is good, then put truck in neutral and pull out parking brake.
  • Test truck - push trailer supply + put truck in drive + gently press on accelerator (should not move) = tractor brakes are good, then turn to neutral.
  • Service brake and brake alignment test - push both spring brakes in, accelerate truck forward to about 5 mph, hands off of the steering wheel,
  • Announce, "My steering wheel did not move and my service breaks work."
  • Put truck in neutral, pull out both brakes.

Inspection Items

  • Spare fuses and light bulbs are stored above you.
  • There should be 2 fire extinguishers, one next to driver seat and behind the passenger
  • Should be properly mounted and secured, not cracked, bent or damaged, no illegal holes or welds, not leaking, filled to the proper level indicated with the needle in the green, pin is in place, no missing hardware
  • There should be Three reflective triangles
  • They should be properly mounted and secured, not cracked, chipped or damaged, proper color, clean, clear and free of debris, no missing hardware and when they are properly put together, they can stand on their own.
  • There should be six mirrors
  • These should be properly, mounted and secured, not cracked, chipped or damaged, clean, clear, free of debris, no illegal stickers, mirrors adjusted to driver, no missing hardware
  • The Windshield should be properly, mounted and secured, not cracked, chipped or damaged, clean, clear and free of debris, no missing hardware
  • The windshield wiper arms should be properly, mounted and secured, Not cracked, bent or damaged, no illegal holes or welds, no missing hardware
  • Windshield wiper blades should be properly, mounted and secured, not cut, torn or frayed, tight and flush to the windshield, no missing hardware
  • Announce, "I am going to check if wipers and washer fluid actually work by pressing in left lever.”

Gauges

  • Read levels aloud for the following gauges:
  • Oil pressure
  • Air pressure
  • Water temperature
  • City and air horn
  • Check heater and defrost
  • Check low beams
  • Check high beams
  • Check signal indicators or blinkers on the left and right
  • Check four-way flashers or hazards
  • Request the examiner to step out to check all lights.
  • When the examiner is in front of the vehicle, point up for top marker lights and point to the sides for side marker lights.
  • When the examiner is in the rear of the vehicle, ensure you press service brakes.
  • Proceed to outside PTI.

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Related Documents

In-Cab Pre Trip Inspection PDF

Description

Demonstrates the in-cab portion of a pre-trip inspection. Covers the safe start procedure including seat belt inspection, ABS and DEF light checks. Also includes the applied break test, noting air governor shut off.

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